mp4

package
v0.33.0 Latest Latest
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 Go to latest Published: Jan 25, 2023 License: MIT, MIT Imports: 18 Imported by: 22

Documentation

Overview

Package mp4 - library for parsing and writing MP4/ISOBMFF files with a focus on fragmented files.

Most boxes have their own file named after the box four-letter name in the ISO/IEC 14996-12 standard, but in some cases, there may be multiple boxes that have the same content, and the code is then having a generic name like visualsampleentry.go.

The Box interface is specified in box.go. It decodes box size and type in the box header and dispatched decode for each individual box depending on its type.

Implement a new box

To implement a new box "fooo", the following is needed:

Create a file fooo.go and with struct type FoooBox.

FoooBox should then implement the Box interface methods: 

Type()
Size()
Encode()
Info()

but also its own decode method `DecodeFooo`, and register that method in the `decoders` map in `box.go`. For a simple example, look at the `prft` box in `prft.go`.

Container Boxes

Container boxes like moof, have a list of all their children called Children, but also direct pointers to the children with appropriate names, like Mfhd and Traf. This makes it easy to chain box paths to reach an element like a TfhdBox as 

file.Moof.Traf.Tfhd

When there may be multiple children with the same name, there may be both a pointer to a slice Trafs with all boxes and Traf that points to the first.

Media Sample Data Structures

To handle media sample data there are two structures:

1. `Sample` stores the sample information used in trun

2. `FullSample` also carries a slice with the samples binary data as well as decode time

Fragmenting segments

A MediaSegment can be fragmented into multiple fragments by the method 

func (s *MediaSegment) Fragmentify(timescale uint64, trex *TrexBox, duration uint32) ([]*Fragment, error)

Index

Constants

View Source 
const (
	// Following Table 1 of Class Tags for descriptors in ISO/IEC 14496-1. There are more types
	ObjectDescrTag        = 1
	InitialObjectDescrTag = 2
	ES_DescrTag           = 3
	DecoderConfigDescrTag = 4
	DecSpecificInfoTag    = 5
	SLConfigDescrTag      = 6
)
View Source 
const (
	// EncModeSegment - only encode boxes that are part of Init and MediaSegments
	EncModeSegment = EncFragFileMode(0)
	// EncModeBoxTree - encode all boxes in file tree
	EncModeBoxTree = EncFragFileMode(1)
)
View Source 
const (
	// OptimizeNone - no optimization
	OptimizeNone = EncOptimize(0)
	// OptimizeTrun - optimize trun box by moving default values to tfhd
	OptimizeTrun = EncOptimize(1 << 0)
)
View Source 
const (
	UUIDPlayReady = "9a04f079-9840-4286-ab92-e65be0885f95"
	UUIDWidevine  = "edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"
	UUIDFairPlay  = "94CE86FB-07FF-4F43-ADB8-93D2FA968CA2"
	UUID_VCAS     = "9a27dd82-fde2-4725-8cbc-4234aa06ec09"
)

UUIDs for different DRM systems

View Source 
const (
	// UUIDTfxd - MSS tfxd UUID
	UUIDTfxd = "6d1d9b05-42d5-44e6-80e2-141daff757b2"

	// UUIDTfrf - MSS tfrf UUID
	UUIDTfrf = "d4807ef2-ca39-4695-8e54-26cb9e46a79f"
)
View Source 
const DefaultTrakID = 1

DefaultTrakID - trakID used when generating new fragmented content

View Source 
const NonSyncSampleFlags uint32 = 0x00010000

NonSyncSampleFlags - flags for non-sync sample

View Source 
const SyncSampleFlags uint32 = 0x02000000

SyncSampleFlags - flags for I-frame or other sync sample

View Source 
const TrunDataOffsetPresentFlag uint32 = 0x01
View Source 
const TrunFirstSampleFlagsPresentFlag uint32 = 0x04
View Source 
const TrunSampleCompositionTimeOffsetPresentFlag uint32 = 0x800
View Source 
const TrunSampleDurationPresentFlag uint32 = 0x100
View Source 
const TrunSampleFlagsPresentFlag uint32 = 0x400
View Source 
const TrunSampleSizePresentFlag uint32 = 0x200
View Source 
const UseSubSampleEncryption = 0x2

UseSubSampleEncryption - flag for subsample encryption

Variables

View Source 
var AC3BitrateCodesKbps = []uint16{
	32,
	40,
	48,
	56,
	64,
	80,
	96,
	112,
	128,
	160,
	192,
	224,
	256,
	320,
	384,
	448,
	512,
	576,
	640,
}

AC3BitrateCodesKbps - Bitrates in kbps ETSI TS 102 366 V1.4.1 Table F.4.1 (2017)

View Source 
var AC3SampleRates = []int{48000, 44100, 32000}

AC3SampleRates - Sample rates as defined in ETSI TS 102 366 V1.4.1 (2017) section 4.4.1.3 Signaled in fscod - Sample rate code - 2 bits

View Source 
var AC3acmodChannelTable = []string{
	"L/R",
	"C",
	"L/R",
	"L/C/R",
	"L/R/Cs",
	"L/C/R/Cs",
	"L/R/Ls/Rs",
	"L/C/R/Ls/Rs",
}

AX3acmodChanneTable - channel configurations from ETSI TS 102 366 V1.4.1 (2017) section 4.4.2.3A Signaled in acmod - audio coding mode - 3 bits

View Source 
var CustomChannelMapLocations = map[string]uint16{
	"L":       1 << 15,
	"C":       1 << 14,
	"R":       1 << 13,
	"Ls":      1 << 12,
	"Rs":      1 << 11,
	"Lc/Rc":   1 << 10,
	"Lrs/Rrs": 1 << 9,
	"Cs":      1 << 8,
	"Ts":      1 << 7,
	"Lsd/Rsd": 1 << 6,
	"Lw/Rw":   1 << 5,
	"Vhl/Vhr": 1 << 4,
	"Vhc":     1 << 3,
	"Lts/Rts": 1 << 2,
	"LFE2":    1 << 1,
	"LFE":     1 << 0,
}

ETSI TS 102 366 V1.4.1 (2017) Table E.1.4 chanmap - Custom channel map - 16 bits

View Source 
var EC3ChannelLocationBits = []string{
	"Lc/Rc",
	"Lrs/Rrs",
	"Cs",
	"Ts",
	"Lsd/Rsd",
	"Lw/Rw",
	"Lvh/Rvh",
	"Cvh",
	"LFE2",
}

EC3ChannelLocationBits - channel location signal in 9bits Table F.6.1

Functions

func ContainerInfo 

func ContainerInfo(c ContainerBox, w io.Writer, specificBoxLevels, indent, indentStep string) error

ContainerInfo - write container-box information

func DecryptSampleCbcs 

func DecryptSampleCbcs(sample []byte, key []byte, iv []byte, subSamplePatterns []SubSamplePattern, tenc *TencBox) error

DecryptSampleCenc - decrypt cenc-schema encrypted sample in place provided key, iv, and subSamplePatterns

func DecryptSampleCenc 

func DecryptSampleCenc(sample []byte, key []byte, iv []byte, subSamplePatterns []SubSamplePattern) error

DecryptSampleCenc - decrypt cenc-schema encrypted sample in place provided key, iv, and subSamplePatterns

func EncodeContainer 

func EncodeContainer(c ContainerBox, w io.Writer) error

EncodeContainer - marshal container c to w

func EncodeContainerSW 

func EncodeContainerSW(c ContainerBox, sw bits.SliceWriter) error

EncodeContainerSW - marshal container c to sw

func EncodeHeader 

func EncodeHeader(b Box, w io.Writer) error

EncodeHeader - encode a box header to a writer

func EncodeHeaderSW 

func EncodeHeaderSW(b Box, sw bits.SliceWriter) error

EncodeHeaderSW - encode a box header to a SliceWriter

func EncodeHeaderWithSize 

func EncodeHeaderWithSize(boxType string, boxSize uint64, largeSize bool, w io.Writer) error

EncodeHeaderWithSize - encode a box header to a writer and allow for largeSize

func EncodeHeaderWithSizeSW 

func EncodeHeaderWithSizeSW(boxType string, boxSize uint64, largeSize bool, sw bits.SliceWriter) error

EncodeHeaderWithSize - encode a box header to a writer and allow for largeSize

func GetChannelListFromACMod 

func GetChannelListFromACMod(acmod byte) []string

GetChannelListFromACMod - get list of channels from acmod byte

func GetVersion 

func GetVersion() string

GetVersion - get version and also commitHash and commitDate if inserted via Makefile

func IsSyncSampleFlags 

func IsSyncSampleFlags(flags uint32) bool

IsSyncSampleFlags - flags is set correctly for sync sample

func RemoveBoxDecoder added in v0.33.0 

func RemoveBoxDecoder(boxType string)

RemoveBoxDecoder removes the decode of boxType. It will be treated as unknown instead.

This is a global change, so use with care.

func SetBoxDecoder added in v0.33.0 

func SetBoxDecoder(boxType string, dec BoxDecoder, decSR BoxDecoderSR)

SetBoxDecoder sets decoder functions for a specific boxType.

This is a global change, so use with care.

func SetNonSyncSampleFlags 

func SetNonSyncSampleFlags(flags uint32) uint32

SetNonSyncSampleFlags - return flags with nonsyncsample pattern

func SetSyncSampleFlags 

func SetSyncSampleFlags(flags uint32) uint32

SetSyncSampleFlags - return flags with syncsample pattern

func WriteToFile 

func WriteToFile(boxStructure BoxStructure, filePath string) error

WriteToFile - write a box structure to a file at filePath

Types

type AlstSampleGroupEntry 

type AlstSampleGroupEntry struct {
	RollCount         uint16
	FirstOutputSample uint16
	SampleOffset      []uint32
	NumOutputSamples  []uint16
	NumTotalSamples   []uint16
}

AlstSampleGroupEntry - Alternative Startup Entry "alst"

ISO/IEC 14496-12 Ed. 6 2020 Section 10.3 - AlternativeStartupEntry

func (*AlstSampleGroupEntry) Encode 

func (s *AlstSampleGroupEntry) Encode(sw bits.SliceWriter)

Encode SampleGroupEntry to SliceWriter

func (*AlstSampleGroupEntry) Info 

func (s *AlstSampleGroupEntry) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*AlstSampleGroupEntry) Size 

func (s *AlstSampleGroupEntry) Size() uint64

Size of sample group entry

func (*AlstSampleGroupEntry) Type 

func (s *AlstSampleGroupEntry) Type() string

Type - GroupingType SampleGroupEntry (uint32 according to spec)

type AudioSampleEntryBox 

type AudioSampleEntryBox struct {
	DataReferenceIndex uint16
	ChannelCount       uint16
	SampleSize         uint16
	SampleRate         uint16 // Integer part
	Esds               *EsdsBox
	Dac3               *Dac3Box
	Dec3               *Dec3Box
	Sinf               *SinfBox
	Children           []Box
	// contains filtered or unexported fields
}

AudioSampleEntryBox according to ISO/IEC 14496-12

func CreateAudioSampleEntryBox 

func CreateAudioSampleEntryBox(name string, nrChannels, sampleSize, sampleRate uint16, child Box) *AudioSampleEntryBox

CreateAudioSampleEntryBox - Create new AudioSampleEntry such as mp4

func NewAudioSampleEntryBox 

func NewAudioSampleEntryBox(name string) *AudioSampleEntryBox

NewAudioSampleEntryBox - Create new empty mp4a box

func (*AudioSampleEntryBox) AddChild 

func (a *AudioSampleEntryBox) AddChild(child Box)

AddChild - add a child box (avcC normally, but clap and pasp could be part of visual entry)

func (*AudioSampleEntryBox) Encode 

func (a *AudioSampleEntryBox) Encode(w io.Writer) error

Encode - write box to w

func (*AudioSampleEntryBox) EncodeSW 

func (a *AudioSampleEntryBox) EncodeSW(sw bits.SliceWriter) error

Encode - write box to sw

func (*AudioSampleEntryBox) Info 

func (a *AudioSampleEntryBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box info to w

func (*AudioSampleEntryBox) RemoveEncryption 

func (a *AudioSampleEntryBox) RemoveEncryption() (*SinfBox, error)

RemoveEncryption - remove sinf box and set type to unencrypted type

func (*AudioSampleEntryBox) Size 

func (a *AudioSampleEntryBox) Size() uint64

Size - return calculated size

func (*AudioSampleEntryBox) Type 

func (a *AudioSampleEntryBox) Type() string

Type - return box type

type AvcCBox 

type AvcCBox struct {
	avc.DecConfRec
}

AvcCBox - AVCConfigurationBox (ISO/IEC 14496-15 5.4.2.1.2 and 5.3.3.1.2) Contains one AVCDecoderConfigurationRecord

func CreateAvcC 

func CreateAvcC(spsNALUs [][]byte, ppsNALUs [][]byte, includePS bool) (*AvcCBox, error)

CreateAvcC - Create an avcC box based on SPS and PPS

func (*AvcCBox) Encode 

func (a *AvcCBox) Encode(w io.Writer) error

Encode - write box to w

func (*AvcCBox) EncodeSW 

func (a *AvcCBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*AvcCBox) Info 

func (a *AvcCBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*AvcCBox) Size 

func (a *AvcCBox) Size() uint64

Size - return calculated size

func (*AvcCBox) Type 

func (a *AvcCBox) Type() string

Type - return box type

type Box 

type Box interface {
	// Type of box, normally 4 asccii characters, but is uint32 according to spec
	Type() string
	// Size of box including header and all children if any
	Size() uint64
	// Encode box to writer
	Encode(w io.Writer) error
	// Encode box to SliceWriter
	EncodeSW(sw bits.SliceWriter) error
	// Info - write box details
	//   spedificBoxLevels is a comma-separated list box:level or all:level where level >= 0.
	//   Higher levels give more details. 0 is default
	//   indent is indent at this box level.
	//   indentStep is how much to indent at each level
	Info(w io.Writer, specificBoxLevels, indent, indentStep string) error
}

Box is the general interface to any ISOBMFF box or similar

func DecodeAudioSampleEntry 

func DecodeAudioSampleEntry(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeAudioSampleEntry - decode mp4a... box

func DecodeAudioSampleEntrySR 

func DecodeAudioSampleEntrySR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeAudioSampleEntry - decode mp4a... box

func DecodeAvcC 

func DecodeAvcC(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeAvcC - box-specific decode

func DecodeAvcCSR 

func DecodeAvcCSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeAvcCSR - box-specific decode

func DecodeBox 

func DecodeBox(startPos uint64, r io.Reader) (Box, error)

DecodeBox decodes a box

func DecodeBoxLazyMdat 

func DecodeBoxLazyMdat(startPos uint64, r io.ReadSeeker) (Box, error)

DecodeBoxLazyMdat decodes a box but doesn't read mdat into memory

func DecodeBoxSR 

func DecodeBoxSR(startPos uint64, sr bits.SliceReader) (Box, error)

DecodeBoxSR - decode a box from SliceReader

func DecodeBtrt 

func DecodeBtrt(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeBtrt - box-specific decode

func DecodeBtrtSR 

func DecodeBtrtSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeBtrtSR - box-specific decode

func DecodeCToo 

func DecodeCToo(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeCToo - box-specific decode

func DecodeCTooSR 

func DecodeCTooSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeCTooSR - box-specific decode

func DecodeCdat 

func DecodeCdat(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeCdat - box-specific decode

func DecodeCdatSR 

func DecodeCdatSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeCdat - box-specific decode

func DecodeClap 

func DecodeClap(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeClap - box-specific decode

func DecodeClapSR 

func DecodeClapSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeClapSR - box-specific decode

func DecodeCo64 

func DecodeCo64(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeCo64 - box-specific decode

func DecodeCo64SR 

func DecodeCo64SR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeCo64 - box-specific decode

func DecodeContainerChildren 

func DecodeContainerChildren(hdr BoxHeader, startPos, endPos uint64, r io.Reader) ([]Box, error)

DecodeContainerChildren decodes a container box

func DecodeContainerChildrenSR 

func DecodeContainerChildrenSR(hdr BoxHeader, startPos, endPos uint64, sr bits.SliceReader) ([]Box, error)

DecodeContainerChildren decodes a container box

func DecodeCslg 

func DecodeCslg(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeCslg - box-specific decode

func DecodeCslgSR 

func DecodeCslgSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeCslgSR - box-specific decode

func DecodeCtim 

func DecodeCtim(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeCtim - box-specific decode

func DecodeCtimSR 

func DecodeCtimSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeCtimSR - box-specific decode

func DecodeCtts 

func DecodeCtts(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeCtts - box-specific decode

func DecodeCttsSR 

func DecodeCttsSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeCttsSR - box-specific decode

func DecodeDac3 

func DecodeDac3(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeDac3 - box-specific decode

func DecodeDac3SR 

func DecodeDac3SR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeDac3SR - box-specific decode

func DecodeData 

func DecodeData(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeData - decode Data (from mov_write_string_data_tag in movenc.c in ffmpeg)

func DecodeDataSR 

func DecodeDataSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeDataSR - decode Data (from mov_write_string_data_tag in movenc.c in ffmpeg)

func DecodeDec3 

func DecodeDec3(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeDec3 - box-specific decode

func DecodeDec3SR 

func DecodeDec3SR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeDec3SR - box-specific decode

func DecodeDinf 

func DecodeDinf(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeDinf - box-specific decode

func DecodeDinfSR 

func DecodeDinfSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeDinfSR - box-specific decode

func DecodeDref 

func DecodeDref(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeDref - box-specific decode

func DecodeDrefSR 

func DecodeDrefSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeDrefSR - box-specific decode

func DecodeEdts 

func DecodeEdts(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeEdts - box-specific decode

func DecodeEdtsSR 

func DecodeEdtsSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeEdtsSR - box-specific decode

func DecodeElng 

func DecodeElng(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeElng - box-specific decode

func DecodeElngSR 

func DecodeElngSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeElngSR - box-specific decode

func DecodeElst 

func DecodeElst(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeElst - box-specific decode

func DecodeElstSR 

func DecodeElstSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeElstSR - box-specific decode

func DecodeEmsg 

func DecodeEmsg(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeEmsg - box-specific decode

func DecodeEmsgSR 

func DecodeEmsgSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeEmsgSR - box-specific decode

func DecodeEsds 

func DecodeEsds(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeEsds - box-specific decode

func DecodeEsdsSR 

func DecodeEsdsSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeEsdsSR - box-specific decode

func DecodeFree 

func DecodeFree(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeFree - box-specific decode

func DecodeFreeSR 

func DecodeFreeSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeFreeSR - box-specific decode

func DecodeFrma 

func DecodeFrma(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeFrma - box-specific decode

func DecodeFrmaSR 

func DecodeFrmaSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeFrmaSR - box-specific decode

func DecodeFtyp 

func DecodeFtyp(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeFtyp - box-specific decode

func DecodeFtypSR 

func DecodeFtypSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeFtypSR - box-specific decode

func DecodeHdlr 

func DecodeHdlr(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeHdlr - box-specific decode

func DecodeHdlrSR 

func DecodeHdlrSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeHdlrSR - box-specific decode

func DecodeHvcC 

func DecodeHvcC(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeHvcC - box-specific decode

func DecodeHvcCSR 

func DecodeHvcCSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeHvcCSR - box-specific decode

func DecodeIden 

func DecodeIden(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeIden - box-specific decode

func DecodeIdenSR 

func DecodeIdenSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeIdenSR - box-specific decode

func DecodeIlst 

func DecodeIlst(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeIlst - box-specific decode

func DecodeIlstSR 

func DecodeIlstSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeIlstSR - box-specific decode

func DecodeKind 

func DecodeKind(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeKind - box-specific decode

func DecodeKindSR 

func DecodeKindSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeKindSR - box-specific decode

func DecodeMdat 

func DecodeMdat(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMdat - box-specific decode

func DecodeMdatLazily 

func DecodeMdatLazily(hdr BoxHeader, startPos uint64) (Box, error)

DecodeMdatLazily - box-specific decode but Data is not in memory

func DecodeMdatSR 

func DecodeMdatSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMdatSR - box-specific decode

func DecodeMdhd 

func DecodeMdhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMdhd - Decode box

func DecodeMdhdSR 

func DecodeMdhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMdhd - Decode box

func DecodeMdia 

func DecodeMdia(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMdia - box-specific decode

func DecodeMdiaSR 

func DecodeMdiaSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMdiaSR - box-specific decode

func DecodeMehd 

func DecodeMehd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMehd - box-specific decode

func DecodeMehdSR 

func DecodeMehdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMehdSR - box-specific decode

func DecodeMeta 

func DecodeMeta(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMeta decodes a MetaBox in either MPEG or QuickTime version

func DecodeMetaSR 

func DecodeMetaSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMetaSR decodes a MetaBox in either MPEG or QuickTime version

func DecodeMfhd 

func DecodeMfhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMfhd - box-specific decode

func DecodeMfhdSR 

func DecodeMfhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMfhdSR - box-specific decode

func DecodeMfra 

func DecodeMfra(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMfra - box-specific decode

func DecodeMfraSR 

func DecodeMfraSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMfraSR - box-specific decode

func DecodeMfro 

func DecodeMfro(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMfro - box-specific decode

func DecodeMfroSR 

func DecodeMfroSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMfroSR - box-specific decode

func DecodeMime 

func DecodeMime(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMime - box-specific decode

func DecodeMimeSR 

func DecodeMimeSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMimeSR - box-specific decode

func DecodeMinf 

func DecodeMinf(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMinf - box-specific decode

func DecodeMinfSR 

func DecodeMinfSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMinfSR - box-specific decode

func DecodeMoof 

func DecodeMoof(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMoof - box-specific decode

func DecodeMoofSR 

func DecodeMoofSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMoofSR - box-specific decode

func DecodeMoov 

func DecodeMoov(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMoov - box-specific decode

func DecodeMoovSR 

func DecodeMoovSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMoovSR - box-specific decode

func DecodeMvex 

func DecodeMvex(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMvex - box-specific decode

func DecodeMvexSR 

func DecodeMvexSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMvex - box-specific decode

func DecodeMvhd 

func DecodeMvhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeMvhd - box-specific decode

func DecodeMvhdSR 

func DecodeMvhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeMvhdSR - box-specific decode

func DecodeNmhd 

func DecodeNmhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeNmhd - box-specific decode

func DecodeNmhdSR 

func DecodeNmhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeNmhdSR - box-specific decode

func DecodePasp 

func DecodePasp(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodePasp - box-specific decode

func DecodePaspSR 

func DecodePaspSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodePaspSR - box-specific decode

func DecodePayl 

func DecodePayl(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodePayl - box-specific decode

func DecodePaylSR 

func DecodePaylSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodePaylSR - box-specific decode

func DecodePrft 

func DecodePrft(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodePrft - box-specific decode

func DecodePrftSR 

func DecodePrftSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodePrftSR - box-specific decode

func DecodePssh 

func DecodePssh(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodePssh - box-specific decode

func DecodePsshSR 

func DecodePsshSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodePsshSR - box-specific decode

func DecodeSaio 

func DecodeSaio(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSaio - box-specific decode

func DecodeSaioSR 

func DecodeSaioSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSaioSR - box-specific decode

func DecodeSaiz 

func DecodeSaiz(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSaiz - box-specific decode

func DecodeSaizSR 

func DecodeSaizSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSaizSR - box-specific decode

func DecodeSbgp 

func DecodeSbgp(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSbgp - box-specific decode

func DecodeSbgpSR 

func DecodeSbgpSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSbgpSR - box-specific decode

func DecodeSchi 

func DecodeSchi(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSchi - box-specific decode

func DecodeSchiSR 

func DecodeSchiSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSchiSR - box-specific decode

func DecodeSchm 

func DecodeSchm(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSchm - box-specific decode

func DecodeSchmSR 

func DecodeSchmSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSchmSR - box-specific decode

func DecodeSdtp 

func DecodeSdtp(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSdtp - box-specific decode

func DecodeSdtpSR 

func DecodeSdtpSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSdtpSR - box-specific decode

func DecodeSenc 

func DecodeSenc(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSenc - box-specific decode

func DecodeSencSR 

func DecodeSencSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSencSR - box-specific decode

func DecodeSgpd 

func DecodeSgpd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSgpd - box-specific decode

func DecodeSgpdSR 

func DecodeSgpdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSgpdSR - box-specific decode

func DecodeSidx 

func DecodeSidx(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSidx - box-specific decode

func DecodeSidxSR 

func DecodeSidxSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSidxSR - box-specific decode

func DecodeSinf 

func DecodeSinf(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSinf - box-specific decode

func DecodeSinfSR 

func DecodeSinfSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSinfSR - box-specific decode

func DecodeSmhd 

func DecodeSmhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSmhd - box-specific decode

func DecodeSmhdSR 

func DecodeSmhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSmhdSR - box-specific decode

func DecodeStbl 

func DecodeStbl(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStbl - box-specific decode

func DecodeStblSR 

func DecodeStblSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStblSR - box-specific decode

func DecodeStco 

func DecodeStco(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStco - box-specific decode

func DecodeStcoSR 

func DecodeStcoSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStcoSR - box-specific decode

func DecodeSthd 

func DecodeSthd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSthd - box-specific decode

func DecodeSthdSR 

func DecodeSthdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSthdSR - box-specific decode

func DecodeStpp 

func DecodeStpp(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStpp - Decode XMLSubtitleSampleEntry (stpp)

func DecodeStppSR 

func DecodeStppSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStppSR - Decode XMLSubtitleSampleEntry (stpp)

func DecodeStsc 

func DecodeStsc(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStsc - box-specific decode

func DecodeStscSR 

func DecodeStscSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStscSR - box-specific decode

func DecodeStsd 

func DecodeStsd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStsd - box-specific decode

func DecodeStsdSR 

func DecodeStsdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStsdSR - box-specific decode

func DecodeStss 

func DecodeStss(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStss - box-specific decode

func DecodeStssSR 

func DecodeStssSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStssSR - box-specific decode

func DecodeStsz 

func DecodeStsz(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStsz - box-specific decode

func DecodeStszSR 

func DecodeStszSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStszSR - box-specific decode

func DecodeSttg 

func DecodeSttg(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSttg - box-specific decode

func DecodeSttgSR 

func DecodeSttgSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSttgSR - box-specific decode

func DecodeStts 

func DecodeStts(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStts - box-specific decode

func DecodeSttsSR 

func DecodeSttsSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSttsSR - box-specific decode

func DecodeStyp 

func DecodeStyp(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeStyp - box-specific decode

func DecodeStypSR 

func DecodeStypSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeStypSR - box-specific decode

func DecodeSubs 

func DecodeSubs(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeSubs - box-specific decode

func DecodeSubsSR 

func DecodeSubsSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeSubsSR - box-specific decode

func DecodeTenc 

func DecodeTenc(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTenc - box-specific decode

func DecodeTencSR 

func DecodeTencSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTencSR - box-specific decode

func DecodeTfdt 

func DecodeTfdt(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTfdt - box-specific decode

func DecodeTfdtSR 

func DecodeTfdtSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTfdtSR - box-specific decode

func DecodeTfhd 

func DecodeTfhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTfhd - box-specific decode

func DecodeTfhdSR 

func DecodeTfhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTfhdSR - box-specific decode

func DecodeTfra 

func DecodeTfra(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTfra - box-specific decode

func DecodeTfraSR 

func DecodeTfraSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTfraSR - box-specific decode

func DecodeTkhd 

func DecodeTkhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTkhd - box-specific decode

func DecodeTkhdSR 

func DecodeTkhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTkhdSR - box-specific decode

func DecodeTraf 

func DecodeTraf(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTraf - box-specific decode

func DecodeTrafSR 

func DecodeTrafSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrafSR - box-specific decode

func DecodeTrak 

func DecodeTrak(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTrak - box-specific decode

func DecodeTrakSR 

func DecodeTrakSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrakSR - box-specific decode

func DecodeTref 

func DecodeTref(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTref - box-specific decode

func DecodeTrefSR 

func DecodeTrefSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrefSR - box-specific decode

func DecodeTrefType 

func DecodeTrefType(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTrefType - box-specific decode

func DecodeTrefTypeSR 

func DecodeTrefTypeSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrefTypeSR - box-specific decode

func DecodeTrep 

func DecodeTrep(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTrep - box-specific decode

func DecodeTrepSR 

func DecodeTrepSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrepSR - box-specific decode

func DecodeTrex 

func DecodeTrex(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTrex - box-specific decode

func DecodeTrexSR 

func DecodeTrexSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrexSR - box-specific decode

func DecodeTrun 

func DecodeTrun(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeTrun - box-specific decode

func DecodeTrunSR 

func DecodeTrunSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeTrun - box-specific decode

func DecodeURLBox 

func DecodeURLBox(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeURLBox - box-specific decode

func DecodeURLBoxSR 

func DecodeURLBoxSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeURLBoxSR - box-specific decode

func DecodeUUIDBox 

func DecodeUUIDBox(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeUUIDBox - decode a UUID box including tfxd or tfrf

func DecodeUUIDBoxSR 

func DecodeUUIDBoxSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeUUIDBoxSR - decode a UUID box including tfxd or tfrf

func DecodeUdta 

func DecodeUdta(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeUdta - box-specific decode

func DecodeUdtaSR 

func DecodeUdtaSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeUdtaSR - box-specific decode

func DecodeUnknown 

func DecodeUnknown(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeUnknown - decode an unknown box

func DecodeUnknownSR 

func DecodeUnknownSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeUnknown - decode an unknown box

func DecodeVisualSampleEntry 

func DecodeVisualSampleEntry(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVisualSampleEntry - decode avc1/avc3/... box

func DecodeVisualSampleEntrySR 

func DecodeVisualSampleEntrySR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVisualSampleEntrySR - decode avc1/avc3/hvc1/hev1... box

func DecodeVlab 

func DecodeVlab(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVlab - box-specific decode

func DecodeVlabSR 

func DecodeVlabSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVlabSR - box-specific decode

func DecodeVmhd 

func DecodeVmhd(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVmhd - box-specific decode

func DecodeVmhdSR 

func DecodeVmhdSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVmhdSR - box-specific decode

func DecodeVsid 

func DecodeVsid(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVsid - box-specific decode

func DecodeVsidSR 

func DecodeVsidSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVsidSR - box-specific decode

func DecodeVttC 

func DecodeVttC(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVttC - box-specific decode

func DecodeVttCSR 

func DecodeVttCSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVttCSR - box-specific decode

func DecodeVtta 

func DecodeVtta(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVtta - box-specific decode

func DecodeVttaSR 

func DecodeVttaSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVttaSR - box-specific decode

func DecodeVttc 

func DecodeVttc(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVttc - box-specific decode

func DecodeVttcSR 

func DecodeVttcSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVttcSR - box-specific decode

func DecodeVtte 

func DecodeVtte(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeVtte - box-specific decode

func DecodeVtteSR 

func DecodeVtteSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeVtteSR - box-specific decode

func DecodeWvtt 

func DecodeWvtt(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

DecodeWvtt - Decoder wvtt Sample Entry (wvtt)

func DecodeWvttSR 

func DecodeWvttSR(hdr BoxHeader, startPos uint64, sr bits.SliceReader) (Box, error)

DecodeWvttSR - Decoder wvtt Sample Entry (wvtt)

type BoxDecoder 

type BoxDecoder func(hdr BoxHeader, startPos uint64, r io.Reader) (Box, error)

BoxDecoder is function signature of the Box Decode method

type BoxDecoderSR 

type BoxDecoderSR func(hdr BoxHeader, startPos uint64, sw bits.SliceReader) (Box, error)

BoxDecoderSR is function signature of the Box DecodeSR method

type BoxHeader 

type BoxHeader struct {
	Name   string
	Size   uint64
	Hdrlen int
}

BoxHeader - 8 or 16 bytes depending on size

func DecodeHeader 

func DecodeHeader(r io.Reader) (BoxHeader, error)

DecodeHeader decodes a box header (size + box type + possible largeSize)

func DecodeHeaderSR 

func DecodeHeaderSR(sr bits.SliceReader) (BoxHeader, error)

DecodeHeaderSR - decode a box header (size + box type + possible largeSize) from sr

type BoxStructure 

type BoxStructure interface {
	Encode(w io.Writer) error
}

BoxStructure represent a box or similar entity such as a Segment

type BtrtBox 

type BtrtBox struct {
	BufferSizeDB uint32
	MaxBitrate   uint32
	AvgBitrate   uint32
}

BtrtBox - BitRateBox - ISO/IEC 14496-12 Section 8.5.2.2

func (*BtrtBox) Encode 

func (b *BtrtBox) Encode(w io.Writer) error

Encode - write box to w

func (*BtrtBox) EncodeSW 

func (b *BtrtBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*BtrtBox) Info 

func (b *BtrtBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*BtrtBox) Size 

func (b *BtrtBox) Size() uint64

Size - return calculated size

func (*BtrtBox) Type 

func (b *BtrtBox) Type() string

Type - return box type

type CTooBox 

type CTooBox struct {
	Children []Box
}

CTooBox - ©too box defines the ffmpeg encoding tool information

func (*CTooBox) AddChild 

func (b *CTooBox) AddChild(child Box)

AddChild - Add a child box and update SampleCount

func (*CTooBox) Encode 

func (b *CTooBox) Encode(w io.Writer) error

Encode - write minf container to w

func (*CTooBox) EncodeSW 

func (b *CTooBox) EncodeSW(sw bits.SliceWriter) error

Encode - write minf container to sw

func (*CTooBox) GetChildren 

func (b *CTooBox) GetChildren() []Box

GetChildren - list of child boxes

func (*CTooBox) Info 

func (b *CTooBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - box-specific Info

func (*CTooBox) Size 

func (b *CTooBox) Size() uint64

Size - calculated size of box

func (*CTooBox) Type 

func (b *CTooBox) Type() string

Type - box type

type CdatBox 

type CdatBox struct {
	Data []byte
}

CdatBox - Closed Captioning Sample Data according to QuickTime spec: https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html#//apple_ref/doc/uid/TP40000939-CH205-SW87

func (*CdatBox) Encode 

func (b *CdatBox) Encode(w io.Writer) error

Encode - write box to w

func (*CdatBox) EncodeSW 

func (b *CdatBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*CdatBox) Info 

func (b *CdatBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box information

func (*CdatBox) Size 

func (b *CdatBox) Size() uint64

Size - calculated size of box

func (*CdatBox) Type 

func (b *CdatBox) Type() string

Type - box type

type Chunk 

type Chunk struct {
	ChunkNr       uint32
	StartSampleNr uint32
	NrSamples     uint32
}

Chunk defines a chunk with number, starting sampleNr and nrSamples.

type ClapBox 

type ClapBox struct {
	CleanApertureWidthN  uint32
	CleanApertureWidthD  uint32
	CleanApertureHeightN uint32
	CleanApertureHeightD uint32
	HorizOffN            uint32
	HorizOffD            uint32
	VertOffN             uint32
	VertOffD             uint32
}

ClapBox - Clean Aperture Box, ISO/IEC 14496-12 2020 Sec. 12.1.4

func (*ClapBox) Encode 

func (b *ClapBox) Encode(w io.Writer) error

Encode - write box to w

func (*ClapBox) EncodeSW 

func (b *ClapBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*ClapBox) Info 

func (b *ClapBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*ClapBox) Size 

func (b *ClapBox) Size() uint64

Size - calculated size of box

func (*ClapBox) Type 

func (b *ClapBox) Type() string

Type - box type

type Co64Box 

type Co64Box struct {
	Version     byte
	Flags       uint32
	ChunkOffset []uint64
}

Co64Box - Chunk Large Offset Box

Contained in : Sample Table box (stbl)

64-bit version of StcoBox

func (*Co64Box) Encode 

func (b *Co64Box) Encode(w io.Writer) error

Encode - write box to w

func (*Co64Box) EncodeSW 

func (b *Co64Box) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*Co64Box) GetOffset 

func (b *Co64Box) GetOffset(chunkNr int) (uint64, error)

GetOffset - get offset for 1-based chunkNr.

func (*Co64Box) Info 

func (b *Co64Box) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*Co64Box) Size 

func (b *Co64Box) Size() uint64

Size - box-specific size

func (*Co64Box) Type 

func (b *Co64Box) Type() string

Type - box-specific type

type ContainerBox 

type ContainerBox interface {
	Type() string
	Size() uint64
	Encode(w io.Writer) error
	EncodeSW(w bits.SliceWriter) error
	GetChildren() []Box
	Info(w io.Writer, specificBoxLevels, indent, indentStep string) error
}

ContainerBox is interface for ContainerBoxes

type CslgBox 

type CslgBox struct {
	Version                      byte
	Flags                        uint32
	CompositionToDTSShift        int64
	LeastDecodeToDisplayDelta    int64
	GreatestDecodeToDisplayDelta int64
	CompositionStartTime         int64
	CompositionEndTime           int64
}

CslgBox - CompositionToDecodeBox -ISO/IEC 14496-12 2015 Sec. 8.6.1.4

Contained in: Sample Table Box (stbl) or Track Extension Properties Box (trep)

func (*CslgBox) Encode 

func (b *CslgBox) Encode(w io.Writer) error

Encode - write box to w

func (*CslgBox) EncodeSW 

func (b *CslgBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*CslgBox) Info 

func (b *CslgBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - get details with specificBoxLevels cslg:1 or higher

func (*CslgBox) Size 

func (b *CslgBox) Size() uint64

Size - calculated size of box

func (*CslgBox) Type 

func (b *CslgBox) Type() string

Type - box type

type CtimBox 

type CtimBox struct {
	CueCurrentTime string
}

CtimBox - CueTimeBox (ctim) CueCurrentTime is current time indication (for split cues)

func (*CtimBox) Encode 

func (b *CtimBox) Encode(w io.Writer) error

Encode - write box to w

func (*CtimBox) EncodeSW 

func (b *CtimBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*CtimBox) Info 

func (b *CtimBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*CtimBox) Size 

func (b *CtimBox) Size() uint64

Size - calculated size of box

func (*CtimBox) Type 

func (b *CtimBox) Type() string

Type - box-specific type

type CttsBox 

type CttsBox struct {
	Version byte
	Flags   uint32
	// EndSampleNr - number (1-based) of last sample in chunk. Starts with 0 for index 0
	EndSampleNr []uint32
	// SampleOffeset - offset of first sample in chunk.
	SampleOffset []int32 // int32 to handle version 1
}

CttsBox - Composition Time to Sample Box (ctts - optional)

Contained in: Sample Table Box (stbl)

func (*CttsBox) AddSampleCountsAndOffset 

func (b *CttsBox) AddSampleCountsAndOffset(counts []uint32, offsets []int32) error

AddSampleCountsAndOffsets - populate this box with data. Need the same number of entries in both

func (*CttsBox) Encode 

func (b *CttsBox) Encode(w io.Writer) error

Encode - write box to w

func (*CttsBox) EncodeSW 

func (b *CttsBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*CttsBox) GetCompositionTimeOffset 

func (b *CttsBox) GetCompositionTimeOffset(sampleNr uint32) int32

GetCompositionTimeOffset - composition time offset for (one-based) sampleNr in track timescale

func (*CttsBox) Info 

func (b *CttsBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - get all info with specificBoxLevels ctts:1 or higher

func (*CttsBox) NrSampleCount 

func (b *CttsBox) NrSampleCount() int

NrSampleCount - the number of SampleCount entries in box

func (*CttsBox) SampleCount 

func (b *CttsBox) SampleCount(i int) uint32

SampleCount - return sample count i (zero-based)

func (*CttsBox) Size 

func (b *CttsBox) Size() uint64

Size - calculated size of box

func (*CttsBox) Type 

func (b *CttsBox) Type() string

Type - box type

type Dac3Box 

type Dac3Box struct {
	FSCod       byte
	BSID        byte
	BSMod       byte
	ACMod       byte
	LFEOn       byte
	BitRateCode byte
}

Dac3Box - AC3SpecificBox from ETSI TS 102 366 V1.4.1 F.4 (2017)

func (*Dac3Box) BitrateBps 

func (b *Dac3Box) BitrateBps() int

func (*Dac3Box) ChannelInfo 

func (b *Dac3Box) ChannelInfo() (nrChannels int, chanmap uint16)

ChannelInfo - number of channels and channelmap according to E.1.3.1.8

func (*Dac3Box) Encode 

func (b *Dac3Box) Encode(w io.Writer) error

Encode - write box to w

func (*Dac3Box) EncodeSW 

func (b *Dac3Box) EncodeSW(sw bits.SliceWriter) error

Encode - write box to sw

func (*Dac3Box) Info 

func (b *Dac3Box) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

func (*Dac3Box) SamplingFrequency 

func (b *Dac3Box) SamplingFrequency() int

func (*Dac3Box) Size 

func (b *Dac3Box) Size() uint64

Size - calculated size of box

func (*Dac3Box) Type 

func (b *Dac3Box) Type() string

Type - box type

type DataBox 

type DataBox struct {
	Data []byte
}

DataBox - data box used by ffmpeg for providing information.

func (*DataBox) Encode 

func (b *DataBox) Encode(w io.Writer) error

Encode - write box to w

func (*DataBox) EncodeSW 

func (b *DataBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*DataBox) Info 

func (b *DataBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - box-specific Info

func (*DataBox) Size 

func (b *DataBox) Size() uint64

Size - calculated size of box

func (*DataBox) Type 

func (b *DataBox) Type() string

Type - box type

type DataRange 

type DataRange struct {
	Offset uint64
	Size   uint64
}

DataRange is a range for sample data in a file relative to file start

type Dec3Box 

type Dec3Box struct {
	DataRate  uint16
	NumIndSub uint16
	EC3Subs   []EC3Sub
	Reserved  []byte
}

Dec3Box - AC3SpecificBox from ETSI TS 102 366 V1.4.1 F.4 (2017)

func (*Dec3Box) ChannelInfo 

func (b *Dec3Box) ChannelInfo() (nrChannels int, chanmap uint16)

func (*Dec3Box) Encode 

func (b *Dec3Box) Encode(w io.Writer) error

Encode - write box to w

func (*Dec3Box) EncodeSW 

func (b *Dec3Box) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write box to sw

func (*Dec3Box) Info 

func (b *Dec3Box) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

func (*Dec3Box) Size 

func (b *Dec3Box) Size() uint64

Size - calculated size of box

func (*Dec3Box) Type 

func (b *Dec3Box) Type() string

Type - box type

type DecFileMode 

type DecFileMode byte

DecFileMode - mode for decoding file 

const (
	// DecModeNormal - read Mdat data into memory during file decoding.
	DecModeNormal DecFileMode = iota
	// DecModeLazyMdat - do not read mdat data into memory.
	// Thus, decode process requires less memory and faster.
	DecModeLazyMdat
)

type DecSpecificInfoDescriptor 

type DecSpecificInfoDescriptor struct {
	DecConfig []byte
	// contains filtered or unexported fields
}

func DecodeDecSpecificInfoDescriptor 

func DecodeDecSpecificInfoDescriptor(sr bits.SliceReader) (DecSpecificInfoDescriptor, error)

func (*DecSpecificInfoDescriptor) EncodeSW 

func (d *DecSpecificInfoDescriptor) EncodeSW(sw bits.SliceWriter) error

func (*DecSpecificInfoDescriptor) Size 

func (d *DecSpecificInfoDescriptor) Size() uint32

func (*DecSpecificInfoDescriptor) SizeSize 

func (d *DecSpecificInfoDescriptor) SizeSize() uint32

func (*DecSpecificInfoDescriptor) Tag 

func (d *DecSpecificInfoDescriptor) Tag() byte

type DecoderConfigDescriptor 

type DecoderConfigDescriptor struct {
	ObjectType byte
	StreamType byte

	BufferSizeDB    uint32
	MaxBitrate      uint32
	AvgBitrate      uint32
	DecSpecificInfo DecSpecificInfoDescriptor
	// contains filtered or unexported fields
}

func DecodeDecoderConfigDescriptor 

func DecodeDecoderConfigDescriptor(sr bits.SliceReader) (DecoderConfigDescriptor, error)

func (*DecoderConfigDescriptor) EncodeSW 

func (d *DecoderConfigDescriptor) EncodeSW(sw bits.SliceWriter) error

func (*DecoderConfigDescriptor) Size 

func (d *DecoderConfigDescriptor) Size() uint32

func (*DecoderConfigDescriptor) SizeSize 

func (d *DecoderConfigDescriptor) SizeSize() uint32

func (*DecoderConfigDescriptor) Tag 

func (d *DecoderConfigDescriptor) Tag() byte

type Descriptor 

type Descriptor interface {
	// Tag - descriptor tag. Fixed for each descriptor type
	Tag() byte
	// Size - size of descriptor, excluding tag byte and size field
	Size() uint32
	// SizeSize - size of descriptor including tag byte and size field
	SizeSize() uint32
	// EncodeSW - Write descriptor to slice writer
	EncodeSW(sw bits.SliceWriter) error
}

type DinfBox 

type DinfBox struct {
	Dref     *DrefBox
	Children []Box
}

DinfBox - Data Information Box (dinf - mandatory)

Contained in : Media Information Box (minf) or Meta Box (meta)

func (*DinfBox) AddChild 

func (d *DinfBox) AddChild(box Box)

AddChild - Add a child box

func (*DinfBox) Encode 

func (d *DinfBox) Encode(w io.Writer) error

Encode - write dinf container to w

func (*DinfBox) EncodeSW 

func (d *DinfBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write container using slice writer

func (*DinfBox) GetChildren 

func (d *DinfBox) GetChildren() []Box

GetChildren - list of child boxes

func (*DinfBox) Info 

func (d *DinfBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box info to w

func (*DinfBox) Size 

func (d *DinfBox) Size() uint64

Size - box-specific size

func (*DinfBox) Type 

func (d *DinfBox) Type() string

Type - box-specific type

type DrefBox 

type DrefBox struct {
	Version    byte
	Flags      uint32
	EntryCount uint32
	Children   []Box
}

DrefBox - Data Reference Box (dref - mandatory)

Contained id: Data Information Box (dinf)

Defines the location of the media data. If the data for the track is located in the same file it contains nothing useful.

func CreateDref 

func CreateDref() *DrefBox

CreateDref - Create an DataReferenceBox for selfcontained content

func (*DrefBox) AddChild 

func (d *DrefBox) AddChild(box Box)

AddChild - Add a child box and update EntryCount

func (*DrefBox) Encode 

func (d *DrefBox) Encode(w io.Writer) error

Encode - write dref box to w including children

func (*DrefBox) EncodeSW 

func (d *DrefBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write dref box to w including children

func (*DrefBox) Info 

func (d *DrefBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*DrefBox) Size 

func (d *DrefBox) Size() uint64

Size - calculated size of box

func (*DrefBox) Type 

func (d *DrefBox) Type() string

Type - box type

type EC3Sub 

type EC3Sub struct {
	FSCod     byte
	BSID      byte
	ASVC      byte
	BSMod     byte
	ACMod     byte
	LFEOn     byte
	NumDepSub byte
	ChanLoc   uint16
}

EC3Sub - Enhanced AC-3 substream information

type ESDescriptor 

type ESDescriptor struct {
	EsID             uint16
	DependsOnEsID    uint16
	OCResID          uint16
	FlagsAndPriority byte

	URLString           string
	DecConfigDescriptor DecoderConfigDescriptor
	SLConfigDescriptor  SLConfigDescriptor
	OtherDescriptors    []RawDescriptor
	// contains filtered or unexported fields
}

ESDescriptor is defined in ISO/IEC 14496-1 7.2.6.5 

class ES_Descriptor extends BaseDescriptor : bit(8) tag=ES_DescrTag {
  bit(16) ES_ID;
  bit(1) streamDependenceFlag;
  bit(1) URL_Flag;
  bit(1) OCRstreamFlag;
  bit(5) streamPriority;
  if (streamDependenceFlag)
    bit(16) dependsOn_ES_ID;
  if (URL_Flag) {
    bit(8) URLlength;
    bit(8) URLstring[URLlength];
  }
  if (OCRstreamFlag)
    bit(16) OCR_ES_Id;
  DecoderConfigDescriptor decConfigDescr;
  if (ODProfileLevelIndication==0x01) //no SL extension.
  {
    SLConfigDescriptor slConfigDescr;
  } else  { // SL extension is possible.
    SLConfigDescriptor slConfigDescr;
  }
  IPI_DescrPointer ipiPtr[0 .. 1];
  IP_IdentificationDataSet ipIDS[0 .. 255];
  IPMP_DescriptorPointer ipmpDescrPtr[0 .. 255];
  LanguageDescriptor langDescr[0 .. 255];
  QoS_Descriptor qosDescr[0 .. 1];
  RegistrationDescriptor regDescr[0 .. 1];
  ExtensionDescriptor extDescr[0 .. 255];
}

func CreateESDescriptor 

func CreateESDescriptor(decConfig []byte) ESDescriptor

func DecodeESDescriptor 

func DecodeESDescriptor(sr bits.SliceReader, descSize uint32) (ESDescriptor, error)

func (*ESDescriptor) EncodeSW 

func (e *ESDescriptor) EncodeSW(sw bits.SliceWriter) error

func (*ESDescriptor) Size 

func (e *ESDescriptor) Size() uint32

func (*ESDescriptor) SizeSize 

func (e *ESDescriptor) SizeSize() uint32

func (*ESDescriptor) Tag 

func (e *ESDescriptor) Tag() byte

type EdtsBox 

type EdtsBox struct {
	Elst     []*ElstBox
	Children []Box
}

EdtsBox - Edit Box (edts - optional)

Contained in: Track Box ("trak")

The edit box maps the presentation timeline to the media-time line

func (*EdtsBox) AddChild 

func (e *EdtsBox) AddChild(child Box)

AddChild - Add a child box and update EntryCount

func (*EdtsBox) Encode 

func (b *EdtsBox) Encode(w io.Writer) error

Encode - write edts container to w

func (*EdtsBox) EncodeSW 

func (b *EdtsBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write edts container to sw

func (*EdtsBox) GetChildren 

func (b *EdtsBox) GetChildren() []Box

GetChildren - list of child boxes

func (*EdtsBox) Info 

func (b *EdtsBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*EdtsBox) Size 

func (b *EdtsBox) Size() uint64

Size - calculated size of box

func (*EdtsBox) Type 

func (b *EdtsBox) Type() string

Type - box type

type ElngBox 

type ElngBox struct {
	Language string
}

ElngBox - Extended Language Box

func CreateElng 

func CreateElng(language string) *ElngBox

CreateElng - Create an Extended Language Box

func (*ElngBox) Encode 

func (b *ElngBox) Encode(w io.Writer) error

Encode - write box to w

func (*ElngBox) EncodeSW 

func (b *ElngBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*ElngBox) Info 

func (b *ElngBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*ElngBox) Size 

func (b *ElngBox) Size() uint64

Size - calculated size of box

func (*ElngBox) Type 

func (b *ElngBox) Type() string

Type - box type

type ElstBox 

type ElstBox struct {
	Version byte
	Flags   uint32
	Entries []ElstEntry
}

ElstBox - Edit List Box (elst - optional)

Contained in : Edit Box (edts)

func (*ElstBox) Encode 

func (b *ElstBox) Encode(w io.Writer) error

Encode - write box to w

func (*ElstBox) EncodeSW 

func (b *ElstBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*ElstBox) Info 

func (b *ElstBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*ElstBox) Size 

func (b *ElstBox) Size() uint64

Size - calculated size of box

func (*ElstBox) Type 

func (b *ElstBox) Type() string

Type - box type

type ElstEntry 

type ElstEntry struct {
	SegmentDuration   uint64
	MediaTime         int64
	MediaRateInteger  int16
	MediaRateFraction int16
}

type EmsgBox 

type EmsgBox struct {
	Version               byte
	Flags                 uint32
	TimeScale             uint32
	PresentationTimeDelta uint32
	PresentationTime      uint64
	EventDuration         uint32
	ID                    uint32
	SchemeIDURI           string
	Value                 string
	MessageData           []byte
}

EmsgBox - DASHEventMessageBox as defined in ISO/IEC 23009-1

func (*EmsgBox) Encode 

func (b *EmsgBox) Encode(w io.Writer) error

Encode - write box to w

func (*EmsgBox) EncodeSW 

func (b *EmsgBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*EmsgBox) Info 

func (b *EmsgBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*EmsgBox) Size 

func (b *EmsgBox) Size() uint64

Size - calculated size of box

func (*EmsgBox) Type 

func (b *EmsgBox) Type() string

Type - box type

type EncFragFileMode 

type EncFragFileMode byte

EncFragFileMode - mode for writing file

type EncOptimize 

type EncOptimize uint32

EncOptimize - encoder optimization mode

func (EncOptimize) String 

func (eo EncOptimize) String() string

type EsdsBox 

type EsdsBox struct {
	Version byte
	Flags   uint32
	ESDescriptor
}

EsdsBox as used for MPEG-audio, see ISO 14496-1 Section 7.2.6.6 for DecoderConfigDescriptor

func CreateEsdsBox 

func CreateEsdsBox(decConfig []byte) *EsdsBox

CreateEsdsBox - Create an EsdsBox geiven decConfig

func (*EsdsBox) Encode 

func (e *EsdsBox) Encode(w io.Writer) error

Encode - write box to w

func (*EsdsBox) EncodeSW 

func (e *EsdsBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*EsdsBox) Info 

func (e *EsdsBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*EsdsBox) Size 

func (e *EsdsBox) Size() uint64

Size - calculated size of box

func (*EsdsBox) Type 

func (e *EsdsBox) Type() string

Type - box type

type File 

type File struct {
	Ftyp        *FtypBox
	Moov        *MoovBox
	Mdat        *MdatBox        // Only used for non-fragmented files
	Init        *InitSegment    // Init data (ftyp + moov for fragmented file)
	Sidx        *SidxBox        // The first sidx box for a DASH OnDemand file
	Sidxs       []*SidxBox      // All sidx boxes for a DASH OnDemand file
	Segments    []*MediaSegment // Media segments
	Children    []Box           // All top-level boxes in order
	FragEncMode EncFragFileMode // Determine how fragmented files are encoded
	EncOptimize EncOptimize     // Bit field with optimizations being done at encoding
	// contains filtered or unexported fields
}

File - an MPEG-4 file asset

A progressive MPEG-4 file contains three main boxes: 

ftyp : the file type box
moov : the movie box (meta-data)
mdat : the media data (chunks and samples). Only used for pror

where mdat may come before moov. If fragmented, there are many more boxes and they are collected in the InitSegment, Segment and Segments structures. The sample metadata in the fragments in the Segments will be optimized unless EncModeBoxTree is set. To Encode the same data as Decoded, this flag must therefore be set. In all cases, Children contain all top-level boxes

func DecodeFile 

func DecodeFile(r io.Reader, options ...Option) (*File, error)

DecodeFile - parse and decode a file from reader r with optional file options. For example, the file options overwrite the default decode or encode mode.

func DecodeFileSR 

func DecodeFileSR(sr bits.SliceReader, options ...Option) (*File, error)

DecodeFile - parse and decode a file from reader r with optional file options. For example, the file options overwrite the default decode or encode mode.

func NewFile 

func NewFile() *File

NewFile - create MP4 file

func ReadMP4File 

func ReadMP4File(path string) (*File, error)

ReadMP4File - read an mp4 file from path

func (*File) AddChild 

func (f *File) AddChild(box Box, boxStartPos uint64)

AddChild - add child with start position

func (*File) AddMediaSegment 

func (f *File) AddMediaSegment(m *MediaSegment)

AddMediaSegment - add a mediasegment to file f

func (*File) AddSidx 

func (f *File) AddSidx(sidx *SidxBox)

AddSidx adds a sidx box to the File and not a MediaSegment.

func (*File) ApplyOptions 

func (f *File) ApplyOptions(opts ...Option)

ApplyOptions - applies options for decoding or encoding a file

func (*File) CopySampleData 

func (f *File) CopySampleData(w io.Writer, rs io.ReadSeeker, trak *TrakBox,
	startSampleNr, endSampleNr uint32, workSpace []byte) error

CopySampleData copies sample data from a track in a progressive mp4 file to w. Use rs for lazy read and workSpace as an intermediate storage to avoid memory allocations.

func (*File) DumpWithSampleData 

func (f *File) DumpWithSampleData(w io.Writer, specificBoxLevels string) error

DumpWithSampleData - print information about file and its children boxes

func (*File) Encode 

func (f *File) Encode(w io.Writer) error

Encode - encode a file to a Writer Fragmented files are encoded based on InitSegment and MediaSegments, unless EncModeBoxTree is set.

func (*File) EncodeSW 

func (f *File) EncodeSW(sw bits.SliceWriter) error

EncodeSW - encode a file to a SliceWriter Fragmented files are encoded based on InitSegment and MediaSegments, unless EncModeBoxTree is set.

func (*File) Info 

func (f *File) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box tree with indent for each level

func (*File) IsFragmented 

func (f *File) IsFragmented() bool

IsFragmented - is file made of multiple segments (Mp4 fragments)

func (*File) LastSegment 

func (f *File) LastSegment() *MediaSegment

LastSegment - Currently last segment

func (*File) Size 

func (f *File) Size() uint64

Size - total size of all boxes

type Fixed16 

type Fixed16 uint16

Fixed16 - An 8.8 fixed point number

func (Fixed16) String 

func (f Fixed16) String() string

type Fixed32 

type Fixed32 uint32

Fixed32 - A 16.16 fixed point number

func (Fixed32) String 

func (f Fixed32) String() string

type Fragment 

type Fragment struct {
	Prft     *PrftBox
	Moof     *MoofBox
	Mdat     *MdatBox
	Children []Box // All top-level boxes in order

	EncOptimize EncOptimize // Bit field with optimizations being done at encoding
	// contains filtered or unexported fields
}

Fragment - MP4 Fragment ([prft] + moof + mdat)

func CreateFragment 

func CreateFragment(seqNumber uint32, trackID uint32) (*Fragment, error)

CreateFragment - create single track empty fragment

func CreateMultiTrackFragment 

func CreateMultiTrackFragment(seqNumber uint32, trackIDs []uint32) (*Fragment, error)

CreateMultiTrackFragment - create multi-track empty fragment without trun

func NewFragment 

func NewFragment() *Fragment

NewFragment - New empty one-track MP4 Fragment

func (*Fragment) AddChild 

func (f *Fragment) AddChild(b Box)

AddChild - Add a top-level box to Fragment

func (*Fragment) AddFullSample 

func (f *Fragment) AddFullSample(s FullSample)

AddFullSample - add a full sample to the first (and only) trun of a track AddFullSampleToTrack is the more general function

func (*Fragment) AddFullSampleToTrack 

func (f *Fragment) AddFullSampleToTrack(s FullSample, trackID uint32) error

AddFullSampleToTrack - allows for adding samples to any track New trun boxes will be created if latest trun of fragment is not in this track

func (*Fragment) AddSample 

func (f *Fragment) AddSample(s Sample, baseMediaDecodeTime uint64)

AddSample - add a sample to the first (and only) trun of a track AddSampleToTrack is the more general function

func (*Fragment) AddSampleInterval 

func (f *Fragment) AddSampleInterval(sItvl SampleInterval) error

AddSampleInterval - add SampleInterval for a fragment with only one track

func (*Fragment) AddSampleToTrack 

func (f *Fragment) AddSampleToTrack(s Sample, trackID uint32, baseMediaDecodeTime uint64) error

AddSampleToTrack - allows for adding samples to any track New trun boxes will be created if latest trun of fragment is not in this track baseMediaDecodeTime will be used only for first sample in a trun

func (*Fragment) AddSamples 

func (f *Fragment) AddSamples(ss []Sample, baseMediaDecodeTime uint64)

AddSamples - add a slice of Sample to the first (and only) trun of a track

func (*Fragment) DumpSampleData 

func (f *Fragment) DumpSampleData(w io.Writer, trex *TrexBox) error

DumpSampleData - Get Sample data and print out

func (*Fragment) Encode 

func (f *Fragment) Encode(w io.Writer) error

Encode - write fragment via writer

func (*Fragment) EncodeSW 

func (f *Fragment) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write fragment via SliceWriter

func (*Fragment) GetChildren 

func (f *Fragment) GetChildren() []Box

GetChildren - return children boxes

func (*Fragment) GetFullSamples 

func (f *Fragment) GetFullSamples(trex *TrexBox) ([]FullSample, error)

GetFullSamples - Get full samples including media and accumulated time

func (*Fragment) GetSampleInterval 

func (f *Fragment) GetSampleInterval(trex *TrexBox, startSampleNr, endSampleNr uint32) (SampleInterval, error)

GetSampleInterval - get SampleInterval for a fragment with only one track

func (*Fragment) GetSampleNrFromTime 

func (f *Fragment) GetSampleNrFromTime(trex *TrexBox, sampleTime uint64) (uint32, error)

GetSampleNrFromTime - look up sample number from a specified time. Return error if no matching time

func (*Fragment) Info 

func (f *Fragment) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*Fragment) SetTrunDataOffsets 

func (f *Fragment) SetTrunDataOffsets()

SetTrunDataOffsets - if writeOrder available, sort and set dataOffset in truns

func (*Fragment) Size 

func (f *Fragment) Size() uint64

Size - return size of fragment including all boxes. Be aware that TrafBox.OptimizeTfhdTrun() can change size

type FreeBox 

type FreeBox struct {
	Name string
	// contains filtered or unexported fields
}

FreeBox - Free Space Box (free or skip)

func (*FreeBox) Encode 

func (b *FreeBox) Encode(w io.Writer) error

Encode - write box to w

func (*FreeBox) EncodeSW 

func (b *FreeBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*FreeBox) Info 

func (b *FreeBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*FreeBox) Size 

func (b *FreeBox) Size() uint64

Size - calculated size of box

func (*FreeBox) Type 

func (b *FreeBox) Type() string

Type - box type

type FrmaBox 

type FrmaBox struct {
	DataFormat string // uint32 - original box type
}

FrmaBox - Original Format Box

func (*FrmaBox) Encode 

func (b *FrmaBox) Encode(w io.Writer) error

Encode - write box to w

func (*FrmaBox) EncodeSW 

func (b *FrmaBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*FrmaBox) Info 

func (b *FrmaBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*FrmaBox) Size 

func (b *FrmaBox) Size() uint64

Size - return calculated size

func (*FrmaBox) Type 

func (b *FrmaBox) Type() string

Type - return box type

type FtypBox 

type FtypBox struct {
	// contains filtered or unexported fields
}

FtypBox - File Type Box (ftyp - mandatory in full file/init segment)

func CreateFtyp 

func CreateFtyp() *FtypBox

CreateFtyp - Create an Ftyp box suitable for DASH/CMAF

func NewFtyp 

func NewFtyp(majorBrand string, minorVersion uint32, compatibleBrands []string) *FtypBox

NewFtyp - new ftyp box with parameters

func (*FtypBox) AddCompatibleBrands 

func (b *FtypBox) AddCompatibleBrands(compatibleBrands []string)

AddCompatibleBrands adds new compatible brands to Ftyp box.

func (*FtypBox) CompatibleBrands 

func (b *FtypBox) CompatibleBrands() []string

CompatibleBrands - slice of compatible brands (4 chars each)

func (*FtypBox) Encode 

func (b *FtypBox) Encode(w io.Writer) error

Encode - write box to w

func (*FtypBox) EncodeSW 

func (b *FtypBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*FtypBox) Info 

func (b *FtypBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box info to w

func (*FtypBox) MajorBrand 

func (b *FtypBox) MajorBrand() string

MajorBrand - major brand (4 chars)

func (*FtypBox) MinorVersion 

func (b *FtypBox) MinorVersion() uint32

MinorVersion - minor version

func (*FtypBox) Size 

func (b *FtypBox) Size() uint64

Size - return calculated size

func (*FtypBox) Type 

func (b *FtypBox) Type() string

Type - return box type

type FullSample 

type FullSample struct {
	Sample
	DecodeTime uint64 // Absolute decode time (offset + accumulated sample Dur)
	Data       []byte // Sample data
}

FullSample - include accumulated time and data. Times in mdhd timescale

func (*FullSample) PresentationTime 

func (s *FullSample) PresentationTime() uint64

PresentationTime - DecodeTime displaced by composition time offset (possibly negative)

type HdlrBox 

type HdlrBox struct {
	Version              byte
	Flags                uint32
	PreDefined           uint32
	HandlerType          string
	Name                 string // Null-terminated UTF-8 string according to ISO/IEC 14496-12 Sec. 8.4.3.3
	LacksNullTermination bool   // This should be false, but we allow true as well
}

HdlrBox - Handler Reference Box (hdlr - mandatory)

Contained in: Media Box (mdia) or Meta Box (meta)

This box describes the type of data contained in the trak. HandlerType can be : "vide" (video track), "soun" (audio track), "subt" (subtitle track) Other types are: "hint" (hint track), "meta" (timed Metadata track), "auxv" (auxiliary video track). clcp (Closed Captions (QuickTime))

func CreateHdlr 

func CreateHdlr(mediaOrHdlrType string) (*HdlrBox, error)

CreateHdlr - create mediaType-specific hdlr box

func (*HdlrBox) Encode 

func (b *HdlrBox) Encode(w io.Writer) error

Encode - write box to w

func (*HdlrBox) EncodeSW 

func (b *HdlrBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*HdlrBox) Info 

func (b *HdlrBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*HdlrBox) Size 

func (b *HdlrBox) Size() uint64

Size - calculated size of box

func (*HdlrBox) Type 

func (b *HdlrBox) Type() string

Type - box type

type HvcCBox 

type HvcCBox struct {
	hevc.DecConfRec
}

HvcCBox - HEVCConfigurationBox (ISO/IEC 14496-15 8.4.1.1.2) Contains one HEVCDecoderConfigurationRecord

func CreateHvcC 

func CreateHvcC(vpsNalus, spsNalus, ppsNalus [][]byte, vpsComplete, spsComplete, ppsComplete, includePS bool) (*HvcCBox, error)

CreateHvcC - create an hvcC box based on VPS, SPS and PPS and signal completeness If includePS is false, the nalus are not included, but information from sps is extracted.

func (*HvcCBox) Encode 

func (b *HvcCBox) Encode(w io.Writer) error

Encode - write box to w

func (*HvcCBox) EncodeSW 

func (b *HvcCBox) EncodeSW(sw bits.SliceWriter) error

Encode - write box to w

func (*HvcCBox) Info 

func (b *HvcCBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - box-specific Info

func (*HvcCBox) Size 

func (b *HvcCBox) Size() uint64

Size - return calculated size

func (*HvcCBox) Type 

func (b *HvcCBox) Type() string

Type - return box type

type IdenBox 

type IdenBox struct {
	CueID string
}

IdenBox - CueIDBox (iden)

func (*IdenBox) Encode 

func (b *IdenBox) Encode(w io.Writer) error

Encode - write box to w

func (*IdenBox) EncodeSW 

func (b *IdenBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*IdenBox) Info 

func (b *IdenBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*IdenBox) Size 

func (b *IdenBox) Size() uint64

Size - calculated size of box

func (*IdenBox) Type 

func (b *IdenBox) Type() string

Type - box-specific type

type IlstBox 

type IlstBox struct {
	Children []Box
}

IlstBox - iTunes Metadata Item List Atom (ilst) See https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/Metadata/Metadata.html

func (*IlstBox) AddChild 

func (b *IlstBox) AddChild(child Box)

AddChild - Add a child box and update SampleCount

func (*IlstBox) Encode 

func (b *IlstBox) Encode(w io.Writer) error

Encode - write ilst container to w

func (*IlstBox) EncodeSW 

func (b *IlstBox) EncodeSW(sw bits.SliceWriter) error

Encode - write ilst container to sw

func (*IlstBox) GetChildren 

func (b *IlstBox) GetChildren() []Box

GetChildren - list of child boxes

func (*IlstBox) Info 

func (b *IlstBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*IlstBox) Size 

func (b *IlstBox) Size() uint64

Size - box-specific type

func (*IlstBox) Type 

func (b *IlstBox) Type() string

Type - box-specific type

type Informer 

type Informer interface {
	// Info - write details via Info method
	//   spedificBoxLevels is a comma-separated list box:level or all:level where level >= 0.
	//   Higher levels give more details. 0 is default
	//   indent is indent at this box level.
	//   indentStep is how much to indent at each level
	Info(w io.Writer, specificBoxLevels, indent, indentStep string) error
}

Informer - write box, segment or file details

type InitSegment 

type InitSegment struct {
	MediaType string
	Ftyp      *FtypBox
	Moov      *MoovBox
	Children  []Box // All top-level boxes in order
}

InitSegment - MP4/CMAF init segment

func CreateEmptyInit 

func CreateEmptyInit() *InitSegment

CreateEmptyInit - create an init segment for fragmented files

func NewMP4Init 

func NewMP4Init() *InitSegment

NewMP4Init - Create MP4Init

func (*InitSegment) AddChild 

func (s *InitSegment) AddChild(b Box)

AddChild - Add a top-level box to InitSegment

func (*InitSegment) AddEmptyTrack 

func (s *InitSegment) AddEmptyTrack(timeScale uint32, mediaType, language string)

AddEmptyTrack - add trak + trex box with appropriate trackID value

func (*InitSegment) Encode 

func (s *InitSegment) Encode(w io.Writer) error

Encode - encode an initsegment to a Writer

func (*InitSegment) EncodeSW 

func (s *InitSegment) EncodeSW(sw bits.SliceWriter) error

EncodeSW - encode an initsegment to a SliceWriter

func (*InitSegment) GetMediaType 

func (s *InitSegment) GetMediaType() string

GetMediaType - should return video or audio (at present)

func (*InitSegment) Info 

func (s *InitSegment) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box tree with indent for each level

func (*InitSegment) Size 

func (s *InitSegment) Size() uint64

Size - size of init segment

type InitializationVector 

type InitializationVector []byte

InitializationVector (8 or 16 bytes)

type KindBox 

type KindBox struct {
	SchemeURI string
	Value     string
}

KindBox - Track Kind Box

func (*KindBox) Encode 

func (b *KindBox) Encode(w io.Writer) error

Encode - write box to w

func (*KindBox) EncodeSW 

func (b *KindBox) EncodeSW(sw bits.SliceWriter) error

Encode - write box to w

func (*KindBox) Info 

func (b *KindBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*KindBox) Size 

func (b *KindBox) Size() uint64

Size - calculated size of box

func (*KindBox) Type 

func (b *KindBox) Type() string

Type - box type

type MdatBox 

type MdatBox struct {
	StartPos  uint64
	Data      []byte
	DataParts [][]byte

	LargeSize bool
	// contains filtered or unexported fields
}

MdatBox - Media Data Box (mdat) The mdat box contains media chunks/samples. DataParts is to be able to gather output data without new allocations

func (*MdatBox) AddSampleData 

func (m *MdatBox) AddSampleData(s []byte)

AddSampleData - a sample data to an mdat box

func (*MdatBox) AddSampleDataPart 

func (m *MdatBox) AddSampleDataPart(s []byte)

AddSampleDataPart - add a data part (for output)

func (*MdatBox) CopyData 

func (m *MdatBox) CopyData(start, size int64, rs io.ReadSeeker, w io.Writer) (nrWritten int64, err error)

CopyData - copy data range from mdat to w. The ReadSeeker is used for lazily loaded mdat case.

func (*MdatBox) DataLength 

func (m *MdatBox) DataLength() uint64

DataLength - length of data stored in box either as one or multiple parts

func (*MdatBox) Encode 

func (m *MdatBox) Encode(w io.Writer) error

Encode - write box to w. If m.lazyDataSize > 0, the mdat data needs to be written separately

func (*MdatBox) EncodeSW 

func (m *MdatBox) EncodeSW(sw bits.SliceWriter) error

Encode - write box to sw. If m.lazyDataSize > 0, the mdat data needs to be written separately

func (*MdatBox) GetLazyDataSize 

func (m *MdatBox) GetLazyDataSize() uint64

GetLazyDataSize - size of the box if filled with data

func (*MdatBox) HeaderSize 

func (m *MdatBox) HeaderSize() uint64

HeaderSize - 8 or 16 (bytes) depending o whether largeSize is used

func (*MdatBox) Info 

func (m *MdatBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MdatBox) IsLazy 

func (m *MdatBox) IsLazy() bool

IsLazy - is the mdat data handled lazily (with separate writer/reader).

func (*MdatBox) PayloadAbsoluteOffset 

func (m *MdatBox) PayloadAbsoluteOffset() uint64

PayloadAbsoluteOffset - position of mdat payload start (works after header)

func (*MdatBox) ReadData 

func (m *MdatBox) ReadData(start, size int64, rs io.ReadSeeker) ([]byte, error)

ReadData reads Mdat data specified by the start and size. Input argument start is the position relative to the start of a file. The ReadSeeker is used for lazily loaded mdat case.

func (*MdatBox) SetData 

func (m *MdatBox) SetData(data []byte)

SetData - set the mdat data to given slice. No copying is done

func (*MdatBox) SetLazyDataSize 

func (m *MdatBox) SetLazyDataSize(newSize uint64)

SetLazyDataSize - set size of mdat lazy data so that the data can be written separately Don't put any data in m.Data in this mode.

func (*MdatBox) Size 

func (m *MdatBox) Size() uint64

Size - return calculated size, depending on largeSize set or not

func (*MdatBox) Type 

func (m *MdatBox) Type() string

Type - return box type

type MdhdBox 

type MdhdBox struct {
	Version          byte // Only version 0
	Flags            uint32
	CreationTime     uint64 // Typically not set
	ModificationTime uint64 // Typically not set
	Timescale        uint32 // Media timescale for this track
	Duration         uint64 // Trak duration, 0 for fragmented files
	Language         uint16 // Three-letter ISO-639-2/T language code
}

MdhdBox - Media Header Box (mdhd - mandatory)

Contained in : Media Box (mdia)

Timescale defines the timescale used for this track. Language is a ISO-639-2/T language code stored as 1bit padding + [3]int5

func (*MdhdBox) Encode 

func (m *MdhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*MdhdBox) EncodeSW 

func (m *MdhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*MdhdBox) GetLanguage 

func (m *MdhdBox) GetLanguage() string

GetLanguage - Get three-byte language string

func (*MdhdBox) Info 

func (m *MdhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MdhdBox) SetLanguage 

func (m *MdhdBox) SetLanguage(lang string)

SetLanguage - Set three-byte language string

func (*MdhdBox) Size 

func (m *MdhdBox) Size() uint64

Size - calculated size of box

func (*MdhdBox) Type 

func (m *MdhdBox) Type() string

Type - box type

type MdiaBox 

type MdiaBox struct {
	Mdhd     *MdhdBox
	Hdlr     *HdlrBox
	Elng     *ElngBox
	Minf     *MinfBox
	Children []Box
}

MdiaBox - Media Box (mdia)

Contained in : Track Box (trak) Contains all information about the media data.

func NewMdiaBox 

func NewMdiaBox() *MdiaBox

NewMdiaBox - Generate a new empty mdia box

func (*MdiaBox) AddChild 

func (m *MdiaBox) AddChild(box Box)

AddChild - Add a child box

func (*MdiaBox) Encode 

func (m *MdiaBox) Encode(w io.Writer) error

EncodeSW - write mdia container to w

func (*MdiaBox) EncodeSW 

func (m *MdiaBox) EncodeSW(sw bits.SliceWriter) error

Encode - write mdia container via sw

func (*MdiaBox) GetChildren 

func (m *MdiaBox) GetChildren() []Box

GetChildren - list of child boxes

func (*MdiaBox) Info 

func (m *MdiaBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MdiaBox) Size 

func (m *MdiaBox) Size() uint64

Size - return calculated size

func (*MdiaBox) Type 

func (m *MdiaBox) Type() string

Type - return box type

type MediaSegment 

type MediaSegment struct {
	Styp        *StypBox
	Sidx        *SidxBox   // The fist sidx box in a segment
	Sidxs       []*SidxBox // All sidx boxes in a segment
	Fragments   []*Fragment
	EncOptimize EncOptimize
}

MediaSegment is an MP4 Media Segment with one or more Fragments.

func NewMediaSegment 

func NewMediaSegment() *MediaSegment

NewMediaSegment - create empty MediaSegment with CMAF styp box

func NewMediaSegmentWithoutStyp 

func NewMediaSegmentWithoutStyp() *MediaSegment

NewMediaSegmentWithoutStyp - create empty media segment with no styp box

func (*MediaSegment) AddFragment 

func (s *MediaSegment) AddFragment(f *Fragment)

AddFragment - Add a fragment to a MediaSegment

func (*MediaSegment) AddSidx 

func (s *MediaSegment) AddSidx(sidx *SidxBox)

AddSidx adds a sidx box to the MediaSegment.

func (*MediaSegment) Encode 

func (s *MediaSegment) Encode(w io.Writer) error

Encode - Write MediaSegment via writer

func (*MediaSegment) EncodeSW 

func (s *MediaSegment) EncodeSW(sw bits.SliceWriter) error

EncodeSW - Write MediaSegment via SliceWriter

func (*MediaSegment) Fragmentify 

func (s *MediaSegment) Fragmentify(timescale uint64, trex *TrexBox, duration uint32) ([]*Fragment, error)

Fragmentify - Split into multiple fragments. Assume single mdat and trun for now

func (*MediaSegment) Info 

func (s *MediaSegment) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box tree with indent for each level

func (*MediaSegment) LastFragment 

func (s *MediaSegment) LastFragment() *Fragment

LastFragment - Currently last fragment

func (*MediaSegment) Size 

func (s *MediaSegment) Size() uint64

Size - return size of media segment

type MehdBox 

type MehdBox struct {
	Version          byte
	Flags            uint32
	FragmentDuration int64
}

MehdBox - Movie Extends Header Box Optional, provides overall duration of a fragmented movie

func (*MehdBox) Encode 

func (b *MehdBox) Encode(w io.Writer) error

Encode - write box to w

func (*MehdBox) EncodeSW 

func (b *MehdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*MehdBox) Info 

func (b *MehdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box-specific information

func (*MehdBox) Size 

func (b *MehdBox) Size() uint64

Size - return calculated size

func (*MehdBox) Type 

func (b *MehdBox) Type() string

Type - return box type

type MetaBox 

type MetaBox struct {
	Version  byte
	Flags    uint32
	Hdlr     *HdlrBox
	Children []Box
	// contains filtered or unexported fields
}

MPEG box defined in ISO/IEC 14496-12 Ed. 6 2020 Section 8.11

Note. QuickTime meta atom has no version and flags field. https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/Metadata/Metadata.html#//apple_ref/doc/uid/TP40000939-CH1-SW10

func CreateMetaBox 

func CreateMetaBox(version byte, hdlr *HdlrBox) *MetaBox

CreateMetaBox creates a new MetaBox

func (*MetaBox) AddChild 

func (b *MetaBox) AddChild(child Box)

AddChild adds a child box

func (*MetaBox) Encode 

func (b *MetaBox) Encode(w io.Writer) error

Encode writes minf container to w

func (*MetaBox) EncodeSW 

func (b *MetaBox) EncodeSW(sw bits.SliceWriter) error

Encode writes minf container to sw

func (*MetaBox) GetChildren 

func (b *MetaBox) GetChildren() []Box

GetChildren lists child boxes

func (*MetaBox) Info 

func (b *MetaBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info writes box-specific info

func (*MetaBox) IsQuickTime added in v0.33.0 

func (m *MetaBox) IsQuickTime() bool

IsQuickTime returns true if box is QuickTime compatible (has no version and flags)

func (*MetaBox) Size 

func (b *MetaBox) Size() uint64

Size calculates size of box

func (*MetaBox) Type 

func (b *MetaBox) Type() string

Type returns box type

type MfhdBox 

type MfhdBox struct {
	Version        byte
	Flags          uint32
	SequenceNumber uint32
}

MfhdBox - Media Fragment Header Box (mfhd)

Contained in : Movie Fragment box (moof))

func CreateMfhd 

func CreateMfhd(sequenceNumber uint32) *MfhdBox

CreateMfhd - create an MfhdBox

func (*MfhdBox) Encode 

func (m *MfhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*MfhdBox) EncodeSW 

func (m *MfhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*MfhdBox) Info 

func (m *MfhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MfhdBox) Size 

func (m *MfhdBox) Size() uint64

Size - calculated size of box

func (*MfhdBox) Type 

func (m *MfhdBox) Type() string

Type - box type

type MfraBox 

type MfraBox struct {
	Tfra     *TfraBox
	Tfras    []*TfraBox
	Mfro     *MfroBox
	Children []Box
	StartPos uint64
}

MfraBox - Movie Fragment Random Access Box (mfra) Container for TfraBox(es) that can be used to find sync samples

func (*MfraBox) AddChild 

func (m *MfraBox) AddChild(child Box) error

AddChild - add child box

func (*MfraBox) Encode 

func (m *MfraBox) Encode(w io.Writer) error

Encode - write mfra container to w

func (*MfraBox) EncodeSW 

func (m *MfraBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW- write mfra container via sw

func (*MfraBox) GetChildren 

func (m *MfraBox) GetChildren() []Box

GetChildren - list of child boxes

func (*MfraBox) Info 

func (m *MfraBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MfraBox) Size 

func (m *MfraBox) Size() uint64

Size - returns calculated size

func (*MfraBox) Type 

func (m *MfraBox) Type() string

Type - returns box type

type MfroBox 

type MfroBox struct {
	Version    byte
	Flags      uint32
	ParentSize uint32
}

MfroBox - Movie Fragment Random Access Offset Box (mfro) Contained in : MfraBox (mfra)

func (*MfroBox) Encode 

func (b *MfroBox) Encode(w io.Writer) error

Encode - write box to w

func (*MfroBox) EncodeSW 

func (b *MfroBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*MfroBox) Info 

func (b *MfroBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MfroBox) Size 

func (b *MfroBox) Size() uint64

Size - return calculated size

func (*MfroBox) Type 

func (b *MfroBox) Type() string

Type - return box type

type MimeBox 

type MimeBox struct {
	Version              byte
	Flags                uint32
	ContentType          string
	LacksZeroTermination bool // Handle non-compliant case as well
}

MimeBox - MIME Box as defined in ISO/IEC 14496-12 2020 Section 12.3.3.2

func (*MimeBox) Encode 

func (b *MimeBox) Encode(w io.Writer) error

Encode - write box to w

func (*MimeBox) EncodeSW 

func (b *MimeBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*MimeBox) Info 

func (b *MimeBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box information

func (*MimeBox) Size 

func (b *MimeBox) Size() uint64

Size - calculated size of box

func (*MimeBox) Type 

func (b *MimeBox) Type() string

Type - box type

type MinfBox 

type MinfBox struct {
	Vmhd     *VmhdBox
	Smhd     *SmhdBox
	Sthd     *SthdBox
	Dinf     *DinfBox
	Stbl     *StblBox
	Children []Box
}

MinfBox - Media Information Box (minf - mandatory)

Contained in : Media Box (mdia)

func NewMinfBox 

func NewMinfBox() *MinfBox

NewMinfBox - Generate a new empty minf box

func (*MinfBox) AddChild 

func (m *MinfBox) AddChild(child Box)

AddChild - Add a child box

func (*MinfBox) Encode 

func (m *MinfBox) Encode(w io.Writer) error

Encode - write minf container to w

func (*MinfBox) EncodeSW 

func (m *MinfBox) EncodeSW(sw bits.SliceWriter) error

Encode - write minf container to sw

func (*MinfBox) GetChildren 

func (m *MinfBox) GetChildren() []Box

GetChildren - list of child boxes

func (*MinfBox) Info 

func (m *MinfBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MinfBox) Size 

func (m *MinfBox) Size() uint64

Size - calculated size of box

func (*MinfBox) Type 

func (m *MinfBox) Type() string

Type - box type

type MoofBox 

type MoofBox struct {
	Mfhd     *MfhdBox
	Traf     *TrafBox // The first traf child box
	Trafs    []*TrafBox
	Pssh     *PsshBox
	Psshs    []*PsshBox
	Children []Box
	StartPos uint64
}

MoofBox - Movie Fragment Box (moof)

Contains all meta-data. To be able to stream a file, the moov box should be placed before the mdat box.

func (*MoofBox) AddChild 

func (m *MoofBox) AddChild(child Box) error

AddChild - add child box

func (*MoofBox) Encode 

func (m *MoofBox) Encode(w io.Writer) error

Encode - write moof after updating trun dataoffset

func (*MoofBox) EncodeSW 

func (m *MoofBox) EncodeSW(sw bits.SliceWriter) error

Encode - write moof after updating trun dataoffset

func (*MoofBox) GetChildren 

func (m *MoofBox) GetChildren() []Box

GetChildren - list of child boxes

func (*MoofBox) Info 

func (m *MoofBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MoofBox) RemovePsshs 

func (m *MoofBox) RemovePsshs() (psshs []*PsshBox, totalSize uint64)

RemovePsshs - remove and return all psshs children boxes

func (*MoofBox) Size 

func (m *MoofBox) Size() uint64

Size - returns calculated size

func (*MoofBox) Type 

func (m *MoofBox) Type() string

Type - returns box type

type MoovBox 

type MoovBox struct {
	Mvhd     *MvhdBox
	Trak     *TrakBox // The first trak box
	Traks    []*TrakBox
	Mvex     *MvexBox
	Pssh     *PsshBox
	Psshs    []*PsshBox
	Children []Box
	StartPos uint64
}

MoovBox - Movie Box (moov - mandatory)

Contains all meta-data. To be able to stream a file, the moov box should be placed before the mdat box.

func NewMoovBox 

func NewMoovBox() *MoovBox

NewMoovBox - Generate a new empty moov box

func (*MoovBox) AddChild 

func (m *MoovBox) AddChild(child Box)

AddChild - Add a child box

func (*MoovBox) Encode 

func (m *MoovBox) Encode(w io.Writer) error

Encode - write moov container to w

func (*MoovBox) EncodeSW 

func (m *MoovBox) EncodeSW(sw bits.SliceWriter) error

Encode - write moov container to sw

func (*MoovBox) GetChildren 

func (m *MoovBox) GetChildren() []Box

GetChildren - list of child boxes

func (*MoovBox) GetSinf 

func (m *MoovBox) GetSinf(trackID uint32) *SinfBox

func (*MoovBox) Info 

func (m *MoovBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MoovBox) RemovePsshs 

func (m *MoovBox) RemovePsshs() []*PsshBox

RemovePsshs - remove and return all psshs children boxes

func (*MoovBox) Size 

func (m *MoovBox) Size() uint64

Size - calculated size of box

func (*MoovBox) Type 

func (m *MoovBox) Type() string

Type - box type

type MvexBox 

type MvexBox struct {
	Mehd     *MehdBox
	Trex     *TrexBox
	Trexs    []*TrexBox
	Children []Box
}

MvexBox - MovieExtendsBox (mevx)

Contained in : Movie Box (moov)

Its presence signals a fragmented asset

func NewMvexBox 

func NewMvexBox() *MvexBox

NewMvexBox - Generate a new empty mvex box

func (*MvexBox) AddChild 

func (m *MvexBox) AddChild(child Box)

AddChild - Add a child box

func (*MvexBox) Encode 

func (m *MvexBox) Encode(w io.Writer) error

Encode - write mvex container to w

func (*MvexBox) EncodeSW 

func (m *MvexBox) EncodeSW(sw bits.SliceWriter) error

Encode - write mvex container to sw

func (*MvexBox) GetChildren 

func (m *MvexBox) GetChildren() []Box

GetChildren - list of child boxes

func (*MvexBox) GetTrex 

func (m *MvexBox) GetTrex(trackID uint32) (trex *TrexBox, ok bool)

GetTrex - get trex box for trackID

func (*MvexBox) Info 

func (m *MvexBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MvexBox) Size 

func (m *MvexBox) Size() uint64

Size - return calculated size

func (*MvexBox) Type 

func (m *MvexBox) Type() string

Type - return box type

type MvhdBox 

type MvhdBox struct {
	Version          byte
	Flags            uint32
	CreationTime     uint64
	ModificationTime uint64
	Timescale        uint32
	Duration         uint64
	NextTrackID      uint32
	Rate             Fixed32
	Volume           Fixed16
}

MvhdBox - Movie Header Box (mvhd - mandatory)

Contained in : Movie Box (‘moov’)

Contains all media information (duration, ...).

Duration is measured in "time units", and timescale defines the number of time units per second.

func CreateMvhd 

func CreateMvhd() *MvhdBox

CreateMvhd - create mvhd box with reasonable values

func (*MvhdBox) Encode 

func (b *MvhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*MvhdBox) EncodeSW 

func (b *MvhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*MvhdBox) Info 

func (b *MvhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*MvhdBox) Size 

func (b *MvhdBox) Size() uint64

Size - return calculated size

func (*MvhdBox) Type 

func (b *MvhdBox) Type() string

Type - return box type

type NmhdBox 

type NmhdBox struct {
	Version byte
	Flags   uint32
}

NmhdBox - Null Media Header Box (nmhd - often used instead of sthd for subtitle tracks)

func (*NmhdBox) Encode 

func (b *NmhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*NmhdBox) EncodeSW 

func (b *NmhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*NmhdBox) Info 

func (b *NmhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*NmhdBox) Size 

func (b *NmhdBox) Size() uint64

Size - calculated size of box

func (*NmhdBox) Type 

func (b *NmhdBox) Type() string

Type - box-specific type

type Option 

type Option func(f *File)

Option is function signature of file options. The design follows functional options pattern.

func WithDecodeMode 

func WithDecodeMode(mode DecFileMode) Option

WithDecodeMode sets up DecFileMode

func WithEncodeMode 

func WithEncodeMode(mode EncFragFileMode) Option

WithEncodeMode sets up EncFragFileMode

type PaspBox 

type PaspBox struct {
	HSpacing uint32
	VSpacing uint32
}

PaspBox - Pixel Aspect Ratio Box, ISO/IEC 14496-12 2020 Sec. 12.1.4

func (*PaspBox) Encode 

func (b *PaspBox) Encode(w io.Writer) error

Encode - write box to w

func (*PaspBox) EncodeSW 

func (b *PaspBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*PaspBox) Info 

func (b *PaspBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*PaspBox) Size 

func (b *PaspBox) Size() uint64

Size - calculated size of box

func (*PaspBox) Type 

func (b *PaspBox) Type() string

Type - box type

type PaylBox 

type PaylBox struct {
	CueText string
}

PaylBox - CuePayloadBox (payl)

func (*PaylBox) Encode 

func (b *PaylBox) Encode(w io.Writer) error

Encode - write box to w

func (*PaylBox) EncodeSW 

func (b *PaylBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*PaylBox) Info 

func (b *PaylBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*PaylBox) Size 

func (b *PaylBox) Size() uint64

Size - calculated size of box

func (*PaylBox) Type 

func (b *PaylBox) Type() string

Type - box-specific type

type PrftBox 

type PrftBox struct {
	Version          byte
	Flags            uint32
	ReferenceTrackID uint32
	NTPTimestamp     uint64
	MediaTime        uint64
}

PrftBox - Producer Reference Box (prft)

Contained in File before moof box

func CreatePrftBox 

func CreatePrftBox(version byte, refTrackID uint32, ntp, mediatime uint64) *PrftBox

CreatePrftBox creates a new PrftBox.

func (*PrftBox) Encode 

func (b *PrftBox) Encode(w io.Writer) error

Encode - write box to w

func (*PrftBox) EncodeSW 

func (b *PrftBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*PrftBox) Info 

func (b *PrftBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*PrftBox) Size 

func (b *PrftBox) Size() uint64

Size - return calculated size

func (*PrftBox) Type 

func (b *PrftBox) Type() string

Type - return box type

type PsshBox 

type PsshBox struct {
	Version  byte
	Flags    uint32
	SystemID UUID
	KIDs     []UUID
	Data     []byte
}

PsshBox - Protection System Specific Header Box Defined in ISO/IEC 23001-7 Secion 8.1

func (*PsshBox) Encode 

func (b *PsshBox) Encode(w io.Writer) error

Encode - write box to w

func (*PsshBox) EncodeSW 

func (b *PsshBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*PsshBox) Info 

func (b *PsshBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*PsshBox) Size 

func (b *PsshBox) Size() uint64

Size - return calculated size

func (*PsshBox) Type 

func (b *PsshBox) Type() string

Type - return box type

type RapSampleGroupEntry 

type RapSampleGroupEntry struct {
	NumLeadingSamplesKnown uint8
	NumLeadingSamples      uint8
}

RapSampleGroupEntry - Random Access Point "rap "

ISO/IEC 14496-12 Ed. 6 2020 Section 10.4 - VisualRandomAccessEntry

func (*RapSampleGroupEntry) Encode 

func (s *RapSampleGroupEntry) Encode(sw bits.SliceWriter)

Encode SampleGroupEntry to SliceWriter

func (*RapSampleGroupEntry) Info 

func (s *RapSampleGroupEntry) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*RapSampleGroupEntry) Size 

func (s *RapSampleGroupEntry) Size() uint64

Size of sample group entry

func (*RapSampleGroupEntry) Type 

func (s *RapSampleGroupEntry) Type() string

Type - GroupingType SampleGroupEntry (uint32 according to spec)

type RawDescriptor 

type RawDescriptor struct {
	// contains filtered or unexported fields
}

RawDescriptor - raw representation of any descriptor

func CreateRawDescriptor 

func CreateRawDescriptor(tag, sizeFieldSizeMinus1 byte, data []byte) (RawDescriptor, error)

func DecodeRawDescriptor 

func DecodeRawDescriptor(sr bits.SliceReader) (RawDescriptor, error)

func (*RawDescriptor) EncodeSW 

func (d *RawDescriptor) EncodeSW(sw bits.SliceWriter) error

func (*RawDescriptor) Size 

func (d *RawDescriptor) Size() uint32

func (*RawDescriptor) SizeSize 

func (d *RawDescriptor) SizeSize() uint32

func (*RawDescriptor) Tag 

func (s *RawDescriptor) Tag() byte

type RollSampleGroupEntry 

type RollSampleGroupEntry struct {
	RollDistance int16
}

RollSampleGroupEntry - Gradual Decoding Refresh "roll"

ISO/IEC 14496-12 Ed. 6 2020 Section 10.1

VisualRollRecoveryEntry / AudioRollRecoveryEntry / AudioPreRollEntry

func (*RollSampleGroupEntry) Encode 

func (s *RollSampleGroupEntry) Encode(sw bits.SliceWriter)

Encode SampleGroupEntry to SliceWriter

func (*RollSampleGroupEntry) Info 

func (s *RollSampleGroupEntry) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*RollSampleGroupEntry) Size 

func (s *RollSampleGroupEntry) Size() uint64

Size of sample group entry

func (*RollSampleGroupEntry) Type 

func (s *RollSampleGroupEntry) Type() string

Type - GroupingType SampleGroupEntry (uint32 according to spec)

type SLConfigDescriptor 

type SLConfigDescriptor struct {
	ConfigValue byte
	MoreData    []byte
	// contains filtered or unexported fields
}

func DecodeSLConfigDescriptor 

func DecodeSLConfigDescriptor(sr bits.SliceReader) (SLConfigDescriptor, error)

func (*SLConfigDescriptor) EncodeSW 

func (d *SLConfigDescriptor) EncodeSW(sw bits.SliceWriter) error

func (*SLConfigDescriptor) Size 

func (d *SLConfigDescriptor) Size() uint32

func (*SLConfigDescriptor) SizeSize 

func (d *SLConfigDescriptor) SizeSize() uint32

func (*SLConfigDescriptor) Tag 

func (d *SLConfigDescriptor) Tag() byte

type SaioBox 

type SaioBox struct {
	Version              byte
	Flags                uint32
	AuxInfoType          string // Used for Common Encryption Scheme (4-bytes uint32 according to spec)
	AuxInfoTypeParameter uint32
	Offset               []int64
}

SaioBox - Sample Auxiliary Information Offsets Box (saiz) (in stbl or traf box)

func (*SaioBox) Encode 

func (b *SaioBox) Encode(w io.Writer) error

Encode - write box to w

func (*SaioBox) EncodeSW 

func (b *SaioBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SaioBox) Info 

func (b *SaioBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write SaioBox details. Get offset list with level >= 1

func (*SaioBox) Size 

func (b *SaioBox) Size() uint64

Size - return calculated size

func (*SaioBox) Type 

func (b *SaioBox) Type() string

Type - return box type

type SaizBox 

type SaizBox struct {
	Version               byte
	Flags                 uint32
	AuxInfoType           string // Used for Common Encryption Scheme (4-bytes uint32 according to spec)
	AuxInfoTypeParameter  uint32
	SampleCount           uint32
	SampleInfo            []byte
	DefaultSampleInfoSize byte
}

SaizBox - Sample Auxiliary Information Sizes Box (saiz) (in stbl or traf box)

func (*SaizBox) Encode 

func (b *SaizBox) Encode(w io.Writer) error

Encode - write box to w

func (*SaizBox) EncodeSW 

func (b *SaizBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SaizBox) Info 

func (b *SaizBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write SaizBox details. Get sampleInfo list with level >= 1

func (*SaizBox) Size 

func (b *SaizBox) Size() uint64

Size - return calculated size

func (*SaizBox) Type 

func (b *SaizBox) Type() string

Type - return box type

type Sample 

type Sample struct {
	Flags                 uint32 // interpreted as SampleFlags
	Dur                   uint32 // Sample duration in mdhd timescale
	Size                  uint32 // Size of sample data
	CompositionTimeOffset int32  // Signed composition time offset
}

Sample - sample as used in trun box (mdhd timescale)

func NewSample 

func NewSample(flags uint32, dur uint32, size uint32, compositionTimeOffset int32) Sample

NewSample - create Sample with trun data

func (*Sample) IsSync 

func (s *Sample) IsSync() bool

IsSync - check sync by masking flags including dependsOn

type SampleFlags 

type SampleFlags struct {
	IsLeading                 byte
	SampleDependsOn           byte
	SampleIsDependedOn        byte
	SampleHasRedundancy       byte
	SamplePaddingValue        byte
	SampleIsNonSync           bool
	SampleDegradationPriority uint16
}

SampleFlags according to 14496-12 Sec. 8.8.3.1

func DecodeSampleFlags 

func DecodeSampleFlags(u uint32) SampleFlags

DecodeSampleFlags - decode a uint32 flags field

func (SampleFlags) Encode 

func (sf SampleFlags) Encode() uint32

Encode - convert sampleflags to uint32 bit pattern

func (SampleFlags) String 

func (sf SampleFlags) String() string

type SampleGroupEntry 

type SampleGroupEntry interface {
	// Type - GroupingType SampleGroupEntry (uint32 according to spec)
	Type() string // actually
	// Size of SampleGroup Entry
	Size() uint64
	// Encode SampleGroupEntry to SliceWriter
	Encode(sw bits.SliceWriter)
	// Info - description of content.
	Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)
}

SampleGroupEntry - like a box, but size and type are not in a header

func DecodeAlstSampleGroupEntry 

func DecodeAlstSampleGroupEntry(name string, length uint32, sr bits.SliceReader) (SampleGroupEntry, error)

DecodeAlstSampleGroupEntry - decode ALST Sample Group Entry

func DecodeRapSampleGroupEntry 

func DecodeRapSampleGroupEntry(name string, length uint32, sr bits.SliceReader) (SampleGroupEntry, error)

DecodeRapSampleGroupEntry - decode Rap Sample Sample Group Entry

func DecodeRollSampleGroupEntry 

func DecodeRollSampleGroupEntry(name string, length uint32, sr bits.SliceReader) (SampleGroupEntry, error)

DecodeRollSampleGroupEntry - decode Roll Sample Group Entry

func DecodeSeigSampleGroupEntry 

func DecodeSeigSampleGroupEntry(name string, length uint32, sr bits.SliceReader) (SampleGroupEntry, error)

DecodeSeigSampleGroupEntry - decode Common Encryption Sample Group Entry

func DecodeUnknownSampleGroupEntry 

func DecodeUnknownSampleGroupEntry(name string, length uint32, sr bits.SliceReader) (SampleGroupEntry, error)

DecodeUnknownSampleGroupEntry - decode an unknown sample group entry

type SampleGroupEntryDecoder 

type SampleGroupEntryDecoder func(name string, length uint32, sr bits.SliceReader) (SampleGroupEntry, error)

SampleGroupEntryDecoder is function signature of the SampleGroupEntry Decode method

type SampleInterval 

type SampleInterval struct {
	FirstDecodeTime uint64
	Samples         []Sample
	OffsetInMdat    uint32 // Offset relative start of mdat box
	Size            uint32 // total size of all samples in interval
	Data            []byte // If set, should be relevant mdat range
}

SampleInterval - an interval of samples including reference to or concatenated binary media data

func (*SampleInterval) Reset 

func (s *SampleInterval) Reset()

Reset resets sample interval while retaining allocated slice-backing arrays

type SbgpBox 

type SbgpBox struct {
	Version                 byte
	Flags                   uint32
	GroupingType            string // uint32, but takes values such as seig
	GroupingTypeParameter   uint32
	SampleCounts            []uint32
	GroupDescriptionIndices []uint32 // Starts at 65537 inside fragment, see Section 8.9.4
}

SbgpBox - Sample To Group Box, ISO/IEC 14496-12 6'th edition 2020 Section 8.9.2

func (*SbgpBox) Encode 

func (b *SbgpBox) Encode(w io.Writer) error

Encode - write box to w

func (*SbgpBox) EncodeSW 

func (b *SbgpBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SbgpBox) Info 

func (b *SbgpBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*SbgpBox) Size 

func (b *SbgpBox) Size() uint64

Size - return calculated size

func (*SbgpBox) Type 

func (b *SbgpBox) Type() string

Type - return box type

type SchiBox 

type SchiBox struct {
	Tenc     *TencBox
	Children []Box
}

SchiBox - Schema Information Box

func (*SchiBox) AddChild 

func (b *SchiBox) AddChild(child Box)

AddChild - Add a child box

func (*SchiBox) Encode 

func (b *SchiBox) Encode(w io.Writer) error

Encode - write minf container to w

func (*SchiBox) EncodeSW 

func (b *SchiBox) EncodeSW(sw bits.SliceWriter) error

Encode - write minf container to sw

func (*SchiBox) GetChildren 

func (b *SchiBox) GetChildren() []Box

GetChildren - list of child boxes

func (*SchiBox) Info 

func (b *SchiBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SchiBox) Size 

func (b *SchiBox) Size() uint64

Size - calculated size of box

func (*SchiBox) Type 

func (b *SchiBox) Type() string

Type - box type

type SchmBox 

type SchmBox struct {
	Version       byte
	Flags         uint32
	SchemeType    string // 4CC represented as uint32
	SchemeVersion uint32
	SchemeURI     string // Absolute null-terminated URL
}

SchmBox - Scheme Type Box

func (*SchmBox) Encode 

func (b *SchmBox) Encode(w io.Writer) error

Encode - write box to w

func (*SchmBox) EncodeSW 

func (b *SchmBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SchmBox) Info 

func (b *SchmBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*SchmBox) Size 

func (b *SchmBox) Size() uint64

Size - return calculated size

func (*SchmBox) Type 

func (b *SchmBox) Type() string

Type - return box type

type SdtpBox 

type SdtpBox struct {
	Version byte
	Flags   uint32
	Entries []SdtpEntry
}

SdtpBox - Sample Dependency Box (sdtp - optional)

ISO/IEC 14496-12 Ed. 6 2020 Section 8.6.4 Contained in Sample Table Box (stbl)

Table to determine whether a sample depends or is depended on by other samples

func CreateSdtpBox 

func CreateSdtpBox(entries []SdtpEntry) *SdtpBox

CreateSdtpBox - create a new SdtpBox

func (*SdtpBox) Encode 

func (b *SdtpBox) Encode(w io.Writer) error

Encode - write box to w

func (*SdtpBox) EncodeSW 

func (b *SdtpBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SdtpBox) Info 

func (b *SdtpBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SdtpBox) Size 

func (b *SdtpBox) Size() uint64

Size - return calculated size

func (*SdtpBox) Type 

func (b *SdtpBox) Type() string

Type - return box type

type SdtpEntry 

type SdtpEntry uint8

SdtpEntry (uint8)

ISO/IEC 14496-12 Ed. 6 2020 Section 8.6.4.2

func NewSdtpEntry 

func NewSdtpEntry(isLeading, sampleDependsOn, sampleDependedOn, hasRedundancy uint8) SdtpEntry

NewSdtpEntry - make new SdtpEntry from 2-bit parameters

func (SdtpEntry) IsLeading 

func (entry SdtpEntry) IsLeading() uint8

IsLeading (bits 0-1) 0: Leading unknown 1: Has dependency before referenced I-picture (not decodable) 2: Not a leading sample 3: Has no dependency before referenced I-picture (decodable)

func (SdtpEntry) SampleDependsOn 

func (entry SdtpEntry) SampleDependsOn() uint8

SampleDependsOn (bits 2-3) 0: Dependency is unknown 1: Depends on others (not an I-picture) 2: Does not depend on others (I-picture) 3: Reservced

func (SdtpEntry) SampleHasRedundancy 

func (entry SdtpEntry) SampleHasRedundancy() uint8

SampleHasRedundancy (bits 6-7) 0: Redundant coding unknown 1: Redundant coding in this sample 2: No redundant coding in this sample 3: Reserved

func (SdtpEntry) SampleIsDependedOn 

func (entry SdtpEntry) SampleIsDependedOn() uint8

SampleIsDependedOn (bits 4-5) 0: Dependency unknown 1: Other samples may depend on this (not disposable) 2: No other samples depend on this (disposable) 3: Reserved

type SeigSampleGroupEntry 

type SeigSampleGroupEntry struct {
	CryptByteBlock  byte
	SkipByteBlock   byte
	IsProtected     byte
	PerSampleIVSize byte
	KID             UUID
	// ConstantIVSize byte given by len(ConstantIV)
	ConstantIV []byte
}

SeigSampleGroupEntry - CencSampleEncryptionInformationGroupEntry as defined in CEF ISO/IEC 23001-7 3rd edition 2016

func (*SeigSampleGroupEntry) ConstantIVSize 

func (s *SeigSampleGroupEntry) ConstantIVSize() byte

ConstantIVSize - non-zero if protected and perSampleIVSize == 0

func (*SeigSampleGroupEntry) Encode 

func (s *SeigSampleGroupEntry) Encode(sw bits.SliceWriter)

Encode SampleGroupEntry to SliceWriter

func (*SeigSampleGroupEntry) Info 

func (s *SeigSampleGroupEntry) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*SeigSampleGroupEntry) Size 

func (s *SeigSampleGroupEntry) Size() uint64

Size of SampleGroup Entry

func (*SeigSampleGroupEntry) Type 

func (s *SeigSampleGroupEntry) Type() string

Type - GroupingType SampleGroupEntry (uint32 according to spec)

type SencBox 

type SencBox struct {
	Version byte

	Flags       uint32
	SampleCount uint32
	StartPos    uint64

	IVs        []InitializationVector // 8 or 16 bytes if present
	SubSamples [][]SubSamplePattern
	// contains filtered or unexported fields
}

SencBox - Sample Encryption Box (senc) (in trak or traf box) Should only be decoded after saio and saiz provide relevant offset and sizes Here we make a two-step decode, with first step reading, and other parsing. See ISO/IEC 23001-7 Section 7.2 and CMAF specification Full Box + SampleCount

func CreateSencBox 

func CreateSencBox() *SencBox

CreateSencBox - create an empty SencBox

func (*SencBox) AddSample 

func (s *SencBox) AddSample(sample SencSample) error

AddSample - add a senc sample with possible IV and subsamples

func (*SencBox) Encode 

func (s *SencBox) Encode(w io.Writer) error

Encode - write box to w

func (*SencBox) EncodeSW 

func (s *SencBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SencBox) GetPerSampleIVSize 

func (s *SencBox) GetPerSampleIVSize() int

GetPerSampleIVSize - return perSampleIVSize

func (*SencBox) Info 

func (s *SencBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SencBox) ParseReadBox 

func (s *SencBox) ParseReadBox(perSampleIVSize byte, saiz *SaizBox) error

ParseReadBox - second phase when perSampleIVSize should be known from tenc or sgpd boxes if perSampleIVSize is 0, we try to find the appropriate error given data length

func (*SencBox) Size 

func (s *SencBox) Size() uint64

Size - box-specific type

func (*SencBox) Type 

func (s *SencBox) Type() string

Type - box-specific type

type SencSample 

type SencSample struct {
	IV         InitializationVector // 0,8,16 byte length
	SubSamples []SubSamplePattern
}

SencSample - sample in SencBox

type SgpdBox 

type SgpdBox struct {
	Version                      byte
	Flags                        uint32
	GroupingType                 string // uint32, but takes values such as seig
	DefaultLength                uint32
	DefaultGroupDescriptionIndex uint32
	DescriptionLengths           []uint32
	SampleGroupEntries           []SampleGroupEntry
}

SgpdBox - Sample Group Description Box, ISO/IEC 14496-12 6'th edition 2020 Section 8.9.3 Version 0 is deprecated

func (*SgpdBox) Encode 

func (b *SgpdBox) Encode(w io.Writer) error

Encode - write box to w

func (*SgpdBox) EncodeSW 

func (b *SgpdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SgpdBox) Info 

func (b *SgpdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*SgpdBox) Size 

func (b *SgpdBox) Size() uint64

Size - return calculated size

func (*SgpdBox) Type 

func (b *SgpdBox) Type() string

Type - return box type

type SidxBox 

type SidxBox struct {
	Version                  byte
	Flags                    uint32
	ReferenceID              uint32
	Timescale                uint32
	EarliestPresentationTime uint64
	FirstOffset              uint64
	SidxRefs                 []SidxRef
}

SidxBox - SegmentIndexBox

func CreateSidx 

func CreateSidx(baseMediaDecodeTime uint64) *SidxBox

CreateSidx - Create a new TfdtBox with baseMediaDecodeTime

func (*SidxBox) Encode 

func (b *SidxBox) Encode(w io.Writer) error

Encode - write box to w

func (*SidxBox) EncodeSW 

func (b *SidxBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SidxBox) Info 

func (b *SidxBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - more info for level 1

func (*SidxBox) Size 

func (b *SidxBox) Size() uint64

Size - return calculated size

func (*SidxBox) Type 

func (b *SidxBox) Type() string

Type - return box type

type SidxRef 

type SidxRef struct {
	ReferencedSize     uint32
	SubSegmentDuration uint32
	SAPDeltaTime       uint32
	ReferenceType      uint8 // 1-bit
	StartsWithSAP      uint8 // 1-bit
	SAPType            uint8
}

SidxRef - reference as used inside SidxBox

type SinfBox 

type SinfBox struct {
	Frma     *FrmaBox // Mandatory
	Schm     *SchmBox // Optional
	Schi     *SchiBox // Optional
	Children []Box
}

SinfBox - Protection Scheme Information Box according to ISO/IEC 23001-7

func (*SinfBox) AddChild 

func (b *SinfBox) AddChild(child Box)

AddChild - Add a child box

func (*SinfBox) Encode 

func (b *SinfBox) Encode(w io.Writer) error

Encode - write minf container to w

func (*SinfBox) EncodeSW 

func (b *SinfBox) EncodeSW(sw bits.SliceWriter) error

Encode - write minf container to sw

func (*SinfBox) GetChildren 

func (b *SinfBox) GetChildren() []Box

GetChildren - list of child boxes

func (*SinfBox) Info 

func (b *SinfBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SinfBox) Size 

func (b *SinfBox) Size() uint64

Size - calculated size of box

func (*SinfBox) Type 

func (b *SinfBox) Type() string

Type - box type

type SmhdBox 

type SmhdBox struct {
	Version byte
	Flags   uint32
	Balance uint16 // should be int16
}

SmhdBox - Sound Media Header Box (smhd - mandatory for sound tracks)

Contained in : Media Information Box (minf)

func CreateSmhd 

func CreateSmhd() *SmhdBox

CreateSmhd - Create Sound Media Header Box (all is zero)

func (*SmhdBox) Encode 

func (b *SmhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*SmhdBox) EncodeSW 

func (b *SmhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SmhdBox) Info 

func (b *SmhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SmhdBox) Size 

func (b *SmhdBox) Size() uint64

Size - calculated size of box

func (*SmhdBox) Type 

func (b *SmhdBox) Type() string

Type - box type

type StblBox 

type StblBox struct {
	// Same order as in Table 1 in ISO/IEC 14496-12 Ed.6 2020
	Stsd  *StsdBox
	Stts  *SttsBox
	Ctts  *CttsBox
	Stsc  *StscBox
	Stsz  *StszBox
	Stss  *StssBox
	Stco  *StcoBox
	Co64  *Co64Box
	Sdtp  *SdtpBox
	Sbgp  *SbgpBox   // The first
	Sbgps []*SbgpBox // All
	Sgpd  *SgpdBox   // The first
	Sgpds []*SgpdBox // All
	Subs  *SubsBox
	Saio  *SaioBox
	Saiz  *SaizBox

	Children []Box
}

StblBox - Sample Table Box (stbl - mandatory)

Contained in : Media Information Box (minf)

The table contains all information relevant to data samples (times, chunks, sizes, ...)

func NewStblBox 

func NewStblBox() *StblBox

NewStblBox - Generate a new empty stbl box

func (*StblBox) AddChild 

func (s *StblBox) AddChild(child Box)

AddChild - Add a child box

func (*StblBox) Encode 

func (s *StblBox) Encode(w io.Writer) error

Encode - write stbl container to w

func (*StblBox) EncodeSW 

func (b *StblBox) EncodeSW(sw bits.SliceWriter) error

Encode - write stbl container to sw

func (*StblBox) GetChildren 

func (s *StblBox) GetChildren() []Box

GetChildren - list of child boxes

func (*StblBox) Info 

func (s *StblBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*StblBox) Size 

func (s *StblBox) Size() uint64

Size - box-specific size

func (*StblBox) Type 

func (s *StblBox) Type() string

Type - box-specific type

type StcoBox 

type StcoBox struct {
	Version     byte
	Flags       uint32
	ChunkOffset []uint32
}

StcoBox - Chunk Offset Box (stco - mandatory)

Contained in : Sample Table box (stbl)

The table contains the offsets (starting at the beginning of the file) for each chunk of data for the current track. A chunk contains samples, the table defining the allocation of samples to each chunk is stsc.

func (*StcoBox) Encode 

func (b *StcoBox) Encode(w io.Writer) error

Encode - write box to w

func (*StcoBox) EncodeSW 

func (b *StcoBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*StcoBox) GetOffset 

func (b *StcoBox) GetOffset(chunkNr int) (uint64, error)

GetOffset - get offset for 1-based chunkNr.

func (*StcoBox) Info 

func (b *StcoBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*StcoBox) Size 

func (b *StcoBox) Size() uint64

Size - box-specific size

func (*StcoBox) Type 

func (b *StcoBox) Type() string

Type - box-specific type

type SthdBox 

type SthdBox struct {
	Version byte
	Flags   uint32
}

SthdBox - Subtitle Media Header Box (sthd - for subtitle tracks)

func (*SthdBox) Encode 

func (b *SthdBox) Encode(w io.Writer) error

Encode - write box to w

func (*SthdBox) EncodeSW 

func (b *SthdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SthdBox) Info 

func (b *SthdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SthdBox) Size 

func (b *SthdBox) Size() uint64

Size - calculated size of box

func (*SthdBox) Type 

func (b *SthdBox) Type() string

Type - box-specific type

type StppBox 

type StppBox struct {
	Namespace          string   // Mandatory
	SchemaLocation     string   // Optional
	AuxiliaryMimeTypes string   // Required if auxiliary types present
	Btrt               *BtrtBox // Optional
	Children           []Box
	DataReferenceIndex uint16
}

StppBox - XMLSubtitleSampleEntryr Box (stpp)

Contained in : Media Information Box (minf)

func NewStppBox 

func NewStppBox(namespace, schemaLocation, auxiliaryMimeTypes string) *StppBox

NewStppBox - Create new stpp box namespace, schemaLocation and auxiliaryMimeType are space-separated utf8-lists without zero-termination schemaLocation and auxiliaryMimeTypes are optional

func (*StppBox) AddChild 

func (b *StppBox) AddChild(child Box)

AddChild - add a child box (avcC normally, but clap and pasp could be part of visual entry)

func (*StppBox) Encode 

func (b *StppBox) Encode(w io.Writer) error

Encode - write box to w

func (*StppBox) EncodeSW 

func (b *StppBox) EncodeSW(sw bits.SliceWriter) error

Encode - write box to w

func (*StppBox) Info 

func (b *StppBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box info to w

func (*StppBox) Size 

func (b *StppBox) Size() uint64

Size - return calculated size

func (*StppBox) Type 

func (b *StppBox) Type() string

Type - return box type

type StscBox 

type StscBox struct {
	Version byte
	Flags   uint32

	Entries             []StscEntry
	SampleDescriptionID []uint32
	// contains filtered or unexported fields
}

StscBox is Sample To Chunk Box in progressive file.

A chunk contains samples. This table defines to which chunk a sample is associated. Each entry is defined by :

  • first chunk : all chunks starting at this index up to the next first chunk have the same sample count/description
  • samples per chunk : number of samples in the chunk
  • sample description id : description (see the sample description box - stsd) this value is most often the same for all samples, so it is stored as a single value if possible.

FirstSampleNr is a helper value for fast lookup. Somthing that is often a bottleneck.

func (*StscBox) AddEntry 

func (b *StscBox) AddEntry(firstChunk, samplesPerChunk, sampleDescriptionID uint32) error

AddEntry adds a new entry and calculates helper values.

func (*StscBox) ChunkNrFromSampleNr 

func (b *StscBox) ChunkNrFromSampleNr(sampleNr int) (chunkNr, firstSampleInChunk int, err error)

ChunkNrFromSampleNr - get chunk number from sampleNr (one-based)

func (*StscBox) Encode 

func (b *StscBox) Encode(w io.Writer) error

Encode - write box to w

func (*StscBox) EncodeSW 

func (b *StscBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*StscBox) FindEntryNrForSampleNr 

func (b *StscBox) FindEntryNrForSampleNr(sampleNr, lowEntryIdx uint32) uint32

FindEntryNrForSampleNr returns the entry where sampleNr belongs. lowEntryIdx is entry index (zero-based). The resulting entryNr is 0-based index.

func (*StscBox) GetChunk 

func (b *StscBox) GetChunk(chunkNr uint32) Chunk

GetChunk returns chunk for chunkNr (one-based).

func (*StscBox) GetContainingChunks 

func (b *StscBox) GetContainingChunks(startSampleNr, endSampleNr uint32) ([]Chunk, error)

GetContainingChunks returns chunks containing the sample interval including endSampleNr. startSampleNr and endSampleNr are 1-based.

func (*StscBox) GetSampleDescriptionID 

func (b *StscBox) GetSampleDescriptionID(chunkNr int) uint32

GetSampleDescriptionID returns the sample description ID from common or individual values for chunk. chunkNr is 1-based.

func (*StscBox) Info 

func (b *StscBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box info to w

func (*StscBox) SetSingleSampleDescriptionID 

func (b *StscBox) SetSingleSampleDescriptionID(sampleDescriptionID uint32)

SetSingleSampleDescriptionID - use this for efficiency if all samples have same sample description

func (*StscBox) Size 

func (b *StscBox) Size() uint64

Size - box-specific size

func (*StscBox) Type 

func (b *StscBox) Type() string

Type box-specific type

type StscEntry 

type StscEntry struct {
	FirstChunk      uint32
	SamplesPerChunk uint32
	FirstSampleNr   uint32
}

type StsdBox 

type StsdBox struct {
	Version     byte
	Flags       uint32
	SampleCount uint32
	AvcX        *VisualSampleEntryBox
	HvcX        *VisualSampleEntryBox
	Mp4a        *AudioSampleEntryBox
	AC3         *AudioSampleEntryBox
	EC3         *AudioSampleEntryBox
	Wvtt        *WvttBox
	Children    []Box
}

StsdBox - Sample Description Box (stsd - manatory) See ISO/IEC 14496-12 Section 8.5.2.2 Full Box + SampleCount All Children are sampleEntries

func NewStsdBox 

func NewStsdBox() *StsdBox

NewStsdBox - Generate a new empty stsd box

func (*StsdBox) AddChild 

func (s *StsdBox) AddChild(box Box)

AddChild - Add a child box and update SampleCount

func (*StsdBox) Encode 

func (s *StsdBox) Encode(w io.Writer) error

Encode - box-specific encode of stsd - not a usual container

func (*StsdBox) EncodeSW 

func (s *StsdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode of stsd - not a usual container

func (*StsdBox) GetSampleDescription 

func (s *StsdBox) GetSampleDescription(index int) (Box, error)

GetSampleDescription - get one of multiple descriptions

func (*StsdBox) Info 

func (s *StsdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*StsdBox) ReplaceChild 

func (s *StsdBox) ReplaceChild(box Box)

ReplaceChild - Replace a child box with one of the same type

func (*StsdBox) Size 

func (s *StsdBox) Size() uint64

Size - box-specific type

func (*StsdBox) Type 

func (s *StsdBox) Type() string

Type - box-specific type

type StssBox 

type StssBox struct {
	Version      byte
	Flags        uint32
	SampleNumber []uint32
}

StssBox - Sync Sample Box (stss - optional)

Contained in : Sample Table box (stbl)

This lists all sync samples (key frames for video tracks) in the data. If absent, all samples are sync samples.

func (*StssBox) Encode 

func (b *StssBox) Encode(w io.Writer) error

Encode - write box to w

func (*StssBox) EncodeSW 

func (b *StssBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*StssBox) EntryCount 

func (b *StssBox) EntryCount() uint32

EntryCount - number of sync samples

func (*StssBox) Info 

func (b *StssBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*StssBox) IsSyncSample 

func (b *StssBox) IsSyncSample(sampleNr uint32) (isSync bool)

IsSyncSample - check if sample (one-based) sampleNr is a sync sample

func (*StssBox) Size 

func (b *StssBox) Size() uint64

Size - box-specific size

func (*StssBox) Type 

func (b *StssBox) Type() string

Type - box-specific type

type StszBox 

type StszBox struct {
	Version           byte
	Flags             uint32
	SampleUniformSize uint32
	SampleNumber      uint32
	SampleSize        []uint32
}

StszBox - Sample Size Box (stsz - mandatory)

Contained in : Sample Table box (stbl)

For each track, either stsz of the more compact stz2 must be present. stz2 variant is not supported.

This table lists the size of each sample. If all samples have the same size, it can be defined in the SampleUniformSize attribute.

func (*StszBox) Encode 

func (b *StszBox) Encode(w io.Writer) error

Encode - write box to w

func (*StszBox) EncodeSW 

func (b *StszBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*StszBox) GetNrSamples 

func (b *StszBox) GetNrSamples() uint32

GetNrSamples - get number of sampples

func (*StszBox) GetSampleSize 

func (b *StszBox) GetSampleSize(i int) uint32

GetSampleSize returns the size (in bytes) of a sample

func (*StszBox) GetTotalSampleSize 

func (b *StszBox) GetTotalSampleSize(startNr, endNr uint32) (uint64, error)

GetTotalSampleSize - get total size of a range [startNr, endNr] of samples

func (*StszBox) Info 

func (b *StszBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*StszBox) Size 

func (b *StszBox) Size() uint64

Size - box-specific size

func (*StszBox) Type 

func (b *StszBox) Type() string

Type - box-specific type

type SttgBox 

type SttgBox struct {
	Settings string
}

SttgBox - CueSettingsBox (sttg)

func (*SttgBox) Encode 

func (b *SttgBox) Encode(w io.Writer) error

Encode - write box to w

func (*SttgBox) EncodeSW 

func (b *SttgBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SttgBox) Info 

func (b *SttgBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SttgBox) Size 

func (b *SttgBox) Size() uint64

Size - calculated size of box

func (*SttgBox) Type 

func (b *SttgBox) Type() string

Type - box-specific type

type SttsBox 

type SttsBox struct {
	Version         byte
	Flags           uint32
	SampleCount     []uint32
	SampleTimeDelta []uint32
}

SttsBox - Decoding Time to Sample Box (stts - mandatory)

This table contains the duration in time units for each sample.

  • SampleCount : the number of consecutive samples having the same duration
  • SampleTimeDelta : duration in time units

func (*SttsBox) Encode 

func (b *SttsBox) Encode(w io.Writer) error

Encode - write box to w

func (*SttsBox) EncodeSW 

func (b *SttsBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SttsBox) GetDecodeTime 

func (b *SttsBox) GetDecodeTime(sampleNr uint32) (decTime uint64, dur uint32)

GetDecodeTime - decode time and duration for (one-based) sampleNr in track timescale

func (*SttsBox) GetDur 

func (b *SttsBox) GetDur(sampleNr uint32) (dur uint32)

GetDur - get dur for a specific sample

func (*SttsBox) GetSampleNrAtTime 

func (b *SttsBox) GetSampleNrAtTime(sampleStartTime uint64) (sampleNr uint32, err error)

GetSampleNrAtTime - get sample number at or as soon as possible after time Time is calculated by summing up durations of previous samples

func (*SttsBox) GetTimeCode 

func (b *SttsBox) GetTimeCode(sample, timescale uint32) time.Duration

GetTimeCode - return the timecode (duration since the beginning of the media) of the beginning of a sample

func (*SttsBox) Info 

func (b *SttsBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*SttsBox) Size 

func (b *SttsBox) Size() uint64

Size - return calculated size

func (*SttsBox) Type 

func (b *SttsBox) Type() string

Type - return box type

type StypBox 

type StypBox struct {
	// contains filtered or unexported fields
}

StypBox - Segment Type Box (styp)

func CreateStyp 

func CreateStyp() *StypBox

CreateStyp - Create an Styp box suitable for DASH/CMAF

func NewStyp 

func NewStyp(majorBrand string, minorVersion uint32, compatibleBrands []string) *StypBox

NewStyp - new styp box with parameters

func (*StypBox) AddCompatibleBrands 

func (b *StypBox) AddCompatibleBrands(compatibleBrands []string)

AddCompatibleBrands adds new compatible brands to Styp box.

func (*StypBox) CompatibleBrands 

func (b *StypBox) CompatibleBrands() []string

CompatibleBrands - slice of compatible brands (4 chars each)

func (*StypBox) Encode 

func (b *StypBox) Encode(w io.Writer) error

Encode - write box to w

func (*StypBox) EncodeSW 

func (b *StypBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*StypBox) Info 

func (b *StypBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box info to w

func (*StypBox) MajorBrand 

func (b *StypBox) MajorBrand() string

MajorBrand - major brand (4 chars)

func (*StypBox) MinorVersion 

func (b *StypBox) MinorVersion() uint32

MinorVersion - minor version

func (*StypBox) Size 

func (b *StypBox) Size() uint64

Size - return calculated size

func (*StypBox) Type 

func (b *StypBox) Type() string

Type - return box type

type SubSamplePattern 

type SubSamplePattern struct {
	BytesOfClearData     uint16
	BytesOfProtectedData uint32
}

SubSamplePattern - pattern of subsample encryption

type SubsBox 

type SubsBox struct {
	Version byte
	Flags   uint32
	Entries []SubsEntry
}

SubsBox - SubSampleInformationBox

func (*SubsBox) Encode 

func (b *SubsBox) Encode(w io.Writer) error

Encode - write box to w

func (*SubsBox) EncodeSW 

func (b *SubsBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*SubsBox) Info 

func (b *SubsBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - specificBoxLevels dump:1 gives details

func (*SubsBox) Size 

func (b *SubsBox) Size() uint64

Size - return calculated size

func (*SubsBox) Type 

func (b *SubsBox) Type() string

Type - return box type

type SubsEntry 

type SubsEntry struct {
	SampleDelta uint32
	SubSamples  []SubsSample
}

SubsEntry - entry in SubsBox

type SubsSample 

type SubsSample struct {
	SubsampleSize           uint32
	CodecSpecificParameters uint32
	SubsamplePriority       uint8
	Discardable             uint8
}

SubsSample - sample in SubsEntry

type TencBox 

type TencBox struct {
	Version                byte
	Flags                  uint32
	DefaultCryptByteBlock  byte
	DefaultSkipByteBlock   byte
	DefaultIsProtected     byte
	DefaultPerSampleIVSize byte
	DefaultKID             UUID
	// DefaultConstantIVSize  byte given by len(DefaultConstantIV)
	DefaultConstantIV []byte
}

TencBox - Track Encryption Box Defined in ISO/IEC 23001-7 Secion 8.2

func (*TencBox) Encode 

func (b *TencBox) Encode(w io.Writer) error

Encode - write box to w

func (*TencBox) EncodeSW 

func (b *TencBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TencBox) Info 

func (b *TencBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*TencBox) Size 

func (b *TencBox) Size() uint64

Size - return calculated size

func (*TencBox) Type 

func (b *TencBox) Type() string

Type - return box type

type TfdtBox 

type TfdtBox struct {
	Version byte
	Flags   uint32
	// contains filtered or unexported fields
}

TfdtBox - Track Fragment Decode Time (tfdt)

Contained in : Track Fragment box (traf)

func CreateTfdt 

func CreateTfdt(baseMediaDecodeTime uint64) *TfdtBox

CreateTfdt - Create a new TfdtBox with baseMediaDecodeTime

func (*TfdtBox) BaseMediaDecodeTime 

func (t *TfdtBox) BaseMediaDecodeTime() uint64

BaseMediaDecodeTime is the base media decode time.

func (*TfdtBox) Encode 

func (t *TfdtBox) Encode(w io.Writer) error

Encode - write box to w

func (*TfdtBox) EncodeSW 

func (t *TfdtBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TfdtBox) Info 

func (t *TfdtBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*TfdtBox) SetBaseMediaDecodeTime 

func (t *TfdtBox) SetBaseMediaDecodeTime(bTime uint64)

SetBaseMediaDecodeTime sets base media decode time of TfdtBox.

func (*TfdtBox) Size 

func (t *TfdtBox) Size() uint64

Size - return calculated size

func (*TfdtBox) Type 

func (t *TfdtBox) Type() string

Type - return box type

type TfhdBox 

type TfhdBox struct {
	Version                byte
	Flags                  uint32
	TrackID                uint32
	BaseDataOffset         uint64
	SampleDescriptionIndex uint32
	DefaultSampleDuration  uint32
	DefaultSampleSize      uint32
	DefaultSampleFlags     uint32
}

TfhdBox - Track Fragment Header Box (tfhd)

Contained in : Track Fragment box (traf))

func CreateTfhd 

func CreateTfhd(trackID uint32) *TfhdBox

CreateTfhd - Create a new TfdtBox with baseMediaDecodeTime

func (*TfhdBox) DefaultBaseIfMoof 

func (t *TfhdBox) DefaultBaseIfMoof() bool

DefaultBaseIfMoof - interpreted flags value

func (*TfhdBox) DurationIsEmpty 

func (t *TfhdBox) DurationIsEmpty() bool

DurationIsEmpty - interpreted flags value

func (*TfhdBox) Encode 

func (t *TfhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*TfhdBox) EncodeSW 

func (t *TfhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TfhdBox) HasBaseDataOffset 

func (t *TfhdBox) HasBaseDataOffset() bool

HasBaseDataOffset - interpreted flags value

func (*TfhdBox) HasDefaultSampleDuration 

func (t *TfhdBox) HasDefaultSampleDuration() bool

HasDefaultSampleDuration - interpreted flags value

func (*TfhdBox) HasDefaultSampleFlags 

func (t *TfhdBox) HasDefaultSampleFlags() bool

HasDefaultSampleFlags - interpreted flags value

func (*TfhdBox) HasDefaultSampleSize 

func (t *TfhdBox) HasDefaultSampleSize() bool

HasDefaultSampleSize - interpreted flags value

func (*TfhdBox) HasSampleDescriptionIndex 

func (t *TfhdBox) HasSampleDescriptionIndex() bool

HasSampleDescriptionIndex - interpreted flags value

func (*TfhdBox) Info 

func (t *TfhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box information

func (*TfhdBox) Size 

func (t *TfhdBox) Size() uint64

Size - returns calculated size

func (*TfhdBox) Type 

func (t *TfhdBox) Type() string

Type - returns box type

type TfraBox 

type TfraBox struct {
	Version               byte
	Flags                 uint32
	TrackID               uint32
	LengthSizeOfTrafNum   byte
	LengthSizeOfTrunNum   byte
	LengthSizeOfSampleNum byte
	Entries               []TfraEntry
}

TfraBox - Track Fragment Random Access Box (tfra) Contained it MfraBox (mfra)

func (*TfraBox) Encode 

func (b *TfraBox) Encode(w io.Writer) error

Encode - write box to w

func (*TfraBox) EncodeSW 

func (b *TfraBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TfraBox) Info 

func (b *TfraBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - box-specific info. More for level 1

func (*TfraBox) Size 

func (b *TfraBox) Size() uint64

Size - return calculated size

func (*TfraBox) Type 

func (b *TfraBox) Type() string

Type - return box type

type TfraEntry 

type TfraEntry struct {
	Time        int64
	MoofOffset  int64
	TrafNumber  uint32
	TrunNumber  uint32
	SampleDelta uint32
}

TfraEntry - reference as used inside TfraBox

type TfrfData 

type TfrfData struct {
	Version                   byte
	Flags                     uint32
	FragmentCount             byte
	FragmentAbsoluteTimes     []uint64
	FragmentAbsoluteDurations []uint64
}

TfrfData - MSS TfrfBox data after UUID part Defined in MSS-SSTR v20180912 section 2.2.4.5

type TfxdData 

type TfxdData struct {
	Version                  byte
	Flags                    uint32
	FragmentAbsoluteTime     uint64
	FragmentAbsoluteDuration uint64
}

TfxdData - MSS TfxdBox data after UUID part Defined in MSS-SSTR v20180912 section 2.2.4.4

type TkhdBox 

type TkhdBox struct {
	Version          byte
	Flags            uint32
	CreationTime     uint64
	ModificationTime uint64
	TrackID          uint32
	Duration         uint64
	Layer            int16
	AlternateGroup   int16 // should be int16
	Volume           Fixed16
	Width, Height    Fixed32
}

TkhdBox - Track Header Box (tkhd - mandatory)

This box describes the track. Duration is measured in time units (according to the time scale defined in the movie header box). Duration is 0 for fragmented files.

Volume (relevant for audio tracks) is a fixed point number (8 bits + 8 bits). Full volume is 1.0. Width and Height (relevant for video tracks) are fixed point numbers (16 bits + 16 bits). Video pixels are not necessarily square.

func CreateTkhd 

func CreateTkhd() *TkhdBox

CreateTkhd - create tkhd box with common settings

func (*TkhdBox) Encode 

func (b *TkhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*TkhdBox) EncodeSW 

func (b *TkhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TkhdBox) Info 

func (b *TkhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*TkhdBox) Size 

func (b *TkhdBox) Size() uint64

Size - calculated size of box

func (*TkhdBox) Type 

func (b *TkhdBox) Type() string

Type - box type

type TopBoxInfo 

type TopBoxInfo struct {
	// Type - box type
	Type string
	// Size - box size
	Size uint64
	// StartPos - where in file does box start
	StartPos uint64
}

TopBoxInfo - information about a top-level box

func GetTopBoxInfoList 

func GetTopBoxInfoList(rs io.ReadSeeker, stopBoxType string) ([]TopBoxInfo, error)

GetTopBoxInfoList - get top boxes until stopBoxType or end of file

type TrafBox 

type TrafBox struct {
	Tfhd     *TfhdBox
	Tfdt     *TfdtBox
	Saiz     *SaizBox
	Saio     *SaioBox
	Sbgp     *SbgpBox
	Sgpd     *SgpdBox
	Senc     *SencBox
	Trun     *TrunBox // The first TrunBox
	Truns    []*TrunBox
	Children []Box
}

TrafBox - Track Fragment Box (traf)

Contained in : Movie Fragment Box (moof)

func (*TrafBox) AddChild 

func (t *TrafBox) AddChild(child Box) error

AddChild - add child box

func (*TrafBox) ContainsSencBox 

func (t *TrafBox) ContainsSencBox() (ok, parsed bool)

ContainsSencBox - is there a senc box in traf and is it parsed If not parsed, call ParseReadSenc to parse it

func (*TrafBox) Encode 

func (t *TrafBox) Encode(w io.Writer) error

Encode - write box to w

func (*TrafBox) EncodeSW 

func (b *TrafBox) EncodeSW(sw bits.SliceWriter) error

Encode - write minf container to sw

func (*TrafBox) GetChildren 

func (t *TrafBox) GetChildren() []Box

GetChildren - list of child boxes

func (*TrafBox) Info 

func (t *TrafBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*TrafBox) OptimizeTfhdTrun 

func (t *TrafBox) OptimizeTfhdTrun() error

OptimizeTfhdTrun - optimize trun by default values in tfhd box Only look at first trun, even if there is more than one Don't optimize again, if already done so that no data is present

func (*TrafBox) ParseReadSenc 

func (t *TrafBox) ParseReadSenc(defaultIVSize byte, moofStartPos uint64) error

func (*TrafBox) RemoveEncryptionBoxes 

func (t *TrafBox) RemoveEncryptionBoxes() uint64

RemoveEncryptionBoxes - remove encryption boxes and return number of bytes removed

func (*TrafBox) Size 

func (t *TrafBox) Size() uint64

Size - return calculated size

func (*TrafBox) Type 

func (t *TrafBox) Type() string

Type - return box type

type TrakBox 

type TrakBox struct {
	Tkhd     *TkhdBox
	Edts     *EdtsBox
	Mdia     *MdiaBox
	Children []Box
}

TrakBox - Track Box (tkhd - mandatory)

Contained in : Movie Box (moov)

A media file can contain one or more tracks.

func CreateEmptyTrak 

func CreateEmptyTrak(trackID, timeScale uint32, mediaType, language string) *TrakBox

CreateEmptyTrak - create a full trak-tree for an empty (fragmented) track with no samples or stsd content

func NewTrakBox 

func NewTrakBox() *TrakBox

NewTrakBox - Make a new empty TrakBox

func (*TrakBox) AddChild 

func (t *TrakBox) AddChild(child Box)

AddChild - Add a child box

func (*TrakBox) Encode 

func (t *TrakBox) Encode(w io.Writer) error

Encode - write trak container to w

func (*TrakBox) EncodeSW 

func (b *TrakBox) EncodeSW(sw bits.SliceWriter) error

Encode - write trak container to sw

func (*TrakBox) GetChildren 

func (t *TrakBox) GetChildren() []Box

GetChildren - list of child boxes

func (*TrakBox) GetNrSamples 

func (t *TrakBox) GetNrSamples() uint32

GetNrSamples - get number of samples for this track defined in the parent moov box.

func (*TrakBox) GetRangesForSampleInterval 

func (t *TrakBox) GetRangesForSampleInterval(startSampleNr, endSampleNr uint32) ([]DataRange, error)

GetRangesForSampleInterval - get ranges inside file for sample range [startSampleNr, endSampleNr]

func (*TrakBox) GetSampleData 

func (t *TrakBox) GetSampleData(startSampleNr, endSampleNr uint32) ([]Sample, error)

GetSampleData - get sample metadata for a specific interval of samples defined in moov. If going outside the range of available samples, an error is returned.

func (*TrakBox) Info 

func (t *TrakBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box info to w

func (*TrakBox) SetAACDescriptor 

func (t *TrakBox) SetAACDescriptor(objType byte, samplingFrequency int) error

SetAACDescriptor - Modify a TrakBox by adding AAC SampleDescriptor objType is one of AAClc, HEAACv1, HEAACv2 For HEAAC, the samplingFrequency is the base frequency (normally 24000)

func (*TrakBox) SetAC3Descriptor 

func (t *TrakBox) SetAC3Descriptor(dac3 *Dac3Box) error

SetAC3Descriptor - Modify a TrakBox by adding AC-3 SampleDescriptor

func (*TrakBox) SetAVCDescriptor 

func (t *TrakBox) SetAVCDescriptor(sampleDescriptorType string, spsNALUs, ppsNALUs [][]byte, includePS bool) error

SetAVCDescriptor - Set AVC SampleDescriptor based on SPS and PPS

func (*TrakBox) SetEC3Descriptor 

func (t *TrakBox) SetEC3Descriptor(dec3 *Dec3Box) error

SetEC3Descriptor - Modify a TrakBox by adding EC-3 SampleDescriptor

func (*TrakBox) SetHEVCDescriptor 

func (t *TrakBox) SetHEVCDescriptor(sampleDescriptorType string, vpsNALUs, spsNALUs, ppsNALUs, seiNALUs [][]byte, includePS bool) error

SetHEVCDescriptor sets HEVC SampleDescriptor based on descriptorType, VPS, SPS, PPS and SEI.

func (*TrakBox) SetStppDescriptor 

func (t *TrakBox) SetStppDescriptor(namespace, schemaLocation, auxiliaryMimeTypes string) error

SetStppDescriptor - add stpp box with utf8-lists namespace, schemaLocation and auxiliaryMimeType The utf8-lists have space-separated items, but no zero-termination

func (*TrakBox) SetWvttDescriptor 

func (t *TrakBox) SetWvttDescriptor(config string) error

SetWvttDescriptor - Set wvtt descriptor with a vttC box. config should start with WEBVTT or be empty.

func (*TrakBox) Size 

func (t *TrakBox) Size() uint64

Size - calculated size of box

func (*TrakBox) Type 

func (t *TrakBox) Type() string

Type - box type

type TrefBox 

type TrefBox struct {
	Children []Box
}

TrefBox - // TrackReferenceBox - ISO/IEC 14496-12 Ed. 9 Sec. 8.3

func (*TrefBox) AddChild 

func (b *TrefBox) AddChild(box Box)

AddChild - Add a child box

func (*TrefBox) Encode 

func (b *TrefBox) Encode(w io.Writer) error

Encode - write minf container to w

func (*TrefBox) EncodeSW 

func (b *TrefBox) EncodeSW(sw bits.SliceWriter) error

Encode - write minf container to sw

func (*TrefBox) GetChildren 

func (b *TrefBox) GetChildren() []Box

GetChildren - list of child boxes

func (*TrefBox) Info 

func (b *TrefBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*TrefBox) Size 

func (b *TrefBox) Size() uint64

Size - calculated size of box

func (*TrefBox) Type 

func (b *TrefBox) Type() string

Type - box type

type TrefTypeBox 

type TrefTypeBox struct {
	Name     string
	TrackIDs []uint32
}

TrefTypeBox - TrackReferenceTypeBox - ISO/IEC 14496-12 Ed. 9 Sec. 8.3 Name can be one of hint, cdsc, font, hind, vdep, vplx, subt (ISO/IEC 14496-12) dpnd, ipir, mpod, sync (ISO/IEC 14496-14)

func (*TrefTypeBox) Encode 

func (t *TrefTypeBox) Encode(w io.Writer) error

Encode - write box to w

func (*TrefTypeBox) EncodeSW 

func (b *TrefTypeBox) EncodeSW(sw bits.SliceWriter) error

Encode - write box to sw

func (*TrefTypeBox) Info 

func (b *TrefTypeBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*TrefTypeBox) Size 

func (b *TrefTypeBox) Size() uint64

Size - calculated size of box

func (*TrefTypeBox) Type 

func (b *TrefTypeBox) Type() string

Type - box type

type TrepBox 

type TrepBox struct {
	Version  byte
	Flags    uint32
	TrackID  uint32
	Children []Box
}

TrepBox - Track Extension Properties Box (trep) Contained in mvex

func (*TrepBox) AddChild 

func (b *TrepBox) AddChild(child Box)

AddChild - Add a child box and update SampleCount

func (*TrepBox) Encode 

func (b *TrepBox) Encode(w io.Writer) error

Encode - box-specific encode of stsd - not a usual container

func (*TrepBox) EncodeSW 

func (b *TrepBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW- box-specific encode of stsd - not a usual container

func (*TrepBox) Info 

func (b *TrepBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*TrepBox) Size 

func (b *TrepBox) Size() uint64

Size - box-specific type

func (*TrepBox) Type 

func (b *TrepBox) Type() string

Type - box-specific type

type TrexBox 

type TrexBox struct {
	Version                       byte
	Flags                         uint32
	TrackID                       uint32
	DefaultSampleDescriptionIndex uint32
	DefaultSampleDuration         uint32
	DefaultSampleSize             uint32
	DefaultSampleFlags            uint32
}

TrexBox - Track Extends Box

Contained in : Mvex Box (mvex)

func CreateTrex 

func CreateTrex(trackID uint32) *TrexBox

CreateTrex - create trex box with trackID

func (*TrexBox) Encode 

func (b *TrexBox) Encode(w io.Writer) error

Encode - write box to w

func (*TrexBox) EncodeSW 

func (b *TrexBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TrexBox) Info 

func (b *TrexBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*TrexBox) Size 

func (b *TrexBox) Size() uint64

Size - return calculated size

func (*TrexBox) Type 

func (b *TrexBox) Type() string

Type - return box type

type TrunBox 

type TrunBox struct {
	Version byte
	Flags   uint32

	DataOffset int32

	Samples []Sample
	// contains filtered or unexported fields
}

TrunBox - Track Fragment Run Box (trun)

Contained in : Track Fragment Box (traf)

func CreateTrun 

func CreateTrun(writeOrderNr uint32) *TrunBox

CreateTrun - create a TrunBox for filling up with samples

func (*TrunBox) AddFullSample 

func (t *TrunBox) AddFullSample(s *FullSample)

AddFullSample - add Sample part of FullSample

func (*TrunBox) AddSample 

func (t *TrunBox) AddSample(s Sample)

AddSample - add a Sample

func (*TrunBox) AddSampleDefaultValues 

func (t *TrunBox) AddSampleDefaultValues(tfhd *TfhdBox, trex *TrexBox) (totalDur uint64)

AddSampleDefaultValues - add values from tfhd and trex boxes if needed Return total duration

func (*TrunBox) AddSamples 

func (t *TrunBox) AddSamples(s []Sample)

AddSamples - add a a slice of Sample

func (*TrunBox) Duration 

func (t *TrunBox) Duration(defaultSampleDuration uint32) uint64

Duration - calculate total duration of all samples given defaultSampleDuration

func (*TrunBox) Encode 

func (t *TrunBox) Encode(w io.Writer) error

Encode - write box to w

func (*TrunBox) EncodeSW 

func (t *TrunBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*TrunBox) FirstSampleFlags 

func (t *TrunBox) FirstSampleFlags() (flags uint32, present bool)

FirstSampleFlags - return firstSampleFlags and indicator if present

func (*TrunBox) GetFullSamples 

func (t *TrunBox) GetFullSamples(offsetInMdat uint32, baseDecodeTime uint64, mdat *MdatBox) []FullSample

GetFullSamples - get all sample data including accumulated time and binary media data offsetInMdat is offset in mdat data (data normally starts 8 or 16 bytes after start of mdat box) baseDecodeTime is decodeTime in tfdt in track timescale (timescale in mfhd) To fill missing individual values from tfhd and trex defaults, call trun.AddSampleDefaultValues() before this call

func (*TrunBox) GetSampleInterval 

func (t *TrunBox) GetSampleInterval(startSampleNr, endSampleNr uint32, baseDecodeTime uint64,
	mdat *MdatBox, offsetInMdat uint32) (SampleInterval, error)

GetSampleInterval - get sample interval [startSampleNr, endSampleNr] (1-based and inclusive) This includes mdat data (if not lazy), in which case only offsetInMdat is given. baseDecodeTime is decodeTime in tfdt in track timescale (timescale from mfhd). To fill missing individual values from tfhd and trex defaults, call AddSampleDefaultValues() before this call.

func (*TrunBox) GetSampleNrForRelativeTime 

func (t *TrunBox) GetSampleNrForRelativeTime(deltaTime uint64, defaultSampleDuration uint32) (uint32, error)

GetSampleNrForRelativeTime - get sample number for exact relative time (calculated from summing durations)

func (*TrunBox) GetSampleRange 

func (t *TrunBox) GetSampleRange(startSampleNr, endSampleNr uint32) []Sample

GetSampleRange - get a one-based range of samples To fill missing individual values from tfhd and trex defaults, call AddSampleDefaultValues() before this call

func (*TrunBox) GetSamples 

func (t *TrunBox) GetSamples() []Sample

GetSamples - get all trun sample data To fill missing individual values from tfhd and trex defaults, call AddSampleDefaultValues() before this call

func (*TrunBox) HasDataOffset 

func (t *TrunBox) HasDataOffset() bool

HasDataOffset - interpreted dataOffsetPresent flag

func (*TrunBox) HasFirstSampleFlags 

func (t *TrunBox) HasFirstSampleFlags() bool

HasFirstSampleFlags - interpreted firstSampleFlagsPresent flag

func (*TrunBox) HasSampleCompositionTimeOffset 

func (t *TrunBox) HasSampleCompositionTimeOffset() bool

HasSampleCompositionTimeOffset - interpreted sampleCompositionTimeOffset flag

func (*TrunBox) HasSampleDuration 

func (t *TrunBox) HasSampleDuration() bool

HasSampleDuration - interpreted sampleDurationPresent flag

func (*TrunBox) HasSampleFlags 

func (t *TrunBox) HasSampleFlags() bool

HasSampleFlags - interpreted sampleFlagsPresent flag

func (*TrunBox) HasSampleSize 

func (t *TrunBox) HasSampleSize() bool

HasSampleSize - interpreted sampleSizePresent flag

func (*TrunBox) Info 

func (t *TrunBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - specificBoxLevels trun:1 gives details

func (*TrunBox) RemoveFirstSampleFlags 

func (t *TrunBox) RemoveFirstSampleFlags()

RemoveFirstSampleFlags - remove firstSampleFlags and its indicator

func (*TrunBox) SampleCount 

func (t *TrunBox) SampleCount() uint32

SampleCount - return how many samples are defined

func (*TrunBox) SetFirstSampleFlags 

func (t *TrunBox) SetFirstSampleFlags(flags uint32)

SetFirstSampleFlags - set firstSampleFlags and bit indicating its presence

func (*TrunBox) Size 

func (t *TrunBox) Size() uint64

Size - return calculated size

func (*TrunBox) SizeOfData 

func (t *TrunBox) SizeOfData() (totalSize uint64)

SizeOfData - size of mediasamples in bytes

func (*TrunBox) Type 

func (t *TrunBox) Type() string

Type - return box type

type URLBox 

type URLBox struct {
	Version  byte
	Flags    uint32
	Location string // Zero-terminated string
}

URLBox - DataEntryUrlBox ('url ')

Contained in : DrefBox (dref

func CreateURLBox 

func CreateURLBox() *URLBox

CreateURLBox - Create a self-referencing URL box

func (*URLBox) Encode 

func (b *URLBox) Encode(w io.Writer) error

Encode - write box to w

func (*URLBox) EncodeSW 

func (b *URLBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*URLBox) Info 

func (b *URLBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box information

func (*URLBox) Size 

func (b *URLBox) Size() uint64

Size - return calculated size

func (*URLBox) Type 

func (b *URLBox) Type() string

Type - return box type

type UUID 

type UUID []byte

UUID - 16-byte KeyID or SystemID

func (UUID) String 

func (u UUID) String() string

type UUIDBox 

type UUIDBox struct {
	Tfxd           *TfxdData
	Tfrf           *TfrfData
	UnknownPayload []byte
	// contains filtered or unexported fields
}

UUIDBox - Used as container for MSS boxes tfxd and tfrf For unknown UUID, the data after the UUID is stored as UnknownPayload

func (*UUIDBox) Encode 

func (b *UUIDBox) Encode(w io.Writer) error

Encode - write box to w

func (*UUIDBox) EncodeSW 

func (b *UUIDBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*UUIDBox) Info 

func (b *UUIDBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - box-specific info

func (*UUIDBox) SetUUID 

func (u *UUIDBox) SetUUID(uuid string) (err error)

UUID - Set UUID from string

func (*UUIDBox) Size 

func (b *UUIDBox) Size() uint64

Size - return calculated size including tfxd/tfrf

func (*UUIDBox) SubType 

func (b *UUIDBox) SubType() string

SubType - interpret the UUID as a known sub type or unknown

func (*UUIDBox) Type 

func (b *UUIDBox) Type() string

Type - return box type

func (*UUIDBox) UUID 

func (u *UUIDBox) UUID() string

UUID - Return UUID as formatted string

type UdtaBox 

type UdtaBox struct {
	Children []Box
}

UdtaBox - User Data Box is a container for User Data

Contained in : moov, trak, moof, or traf

func (*UdtaBox) AddChild 

func (b *UdtaBox) AddChild(box Box)

AddChild - Add a child box

func (*UdtaBox) Encode 

func (b *UdtaBox) Encode(w io.Writer) error

Encode - write udta container to w

func (*UdtaBox) EncodeSW 

func (b *UdtaBox) EncodeSW(sw bits.SliceWriter) error

Encode - write udta container to sw

func (*UdtaBox) GetChildren 

func (b *UdtaBox) GetChildren() []Box

GetChildren - list of child boxes

func (*UdtaBox) Info 

func (b *UdtaBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*UdtaBox) Size 

func (b *UdtaBox) Size() uint64

Size - calculated size of box

func (*UdtaBox) Type 

func (b *UdtaBox) Type() string

Type - box type

type UnknownBox 

type UnknownBox struct {
	// contains filtered or unexported fields
}

UnknownBox - box that we don't know how to parse

func (*UnknownBox) Encode 

func (b *UnknownBox) Encode(w io.Writer) error

Encode - write box to w

func (*UnknownBox) EncodeSW 

func (b *UnknownBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*UnknownBox) Info 

func (b *UnknownBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*UnknownBox) Size 

func (b *UnknownBox) Size() uint64

Size - return calculated size

func (*UnknownBox) Type 

func (b *UnknownBox) Type() string

Type - return box type

type UnknownSampleGroupEntry 

type UnknownSampleGroupEntry struct {
	Name   string
	Length uint32
	Data   []byte
}

UnknownSampleGroupEntry - unknown or not implemented SampleGroupEntry

func (*UnknownSampleGroupEntry) Encode 

func (s *UnknownSampleGroupEntry) Encode(sw bits.SliceWriter)

Encode SampleGroupEntry to SliceWriter

func (*UnknownSampleGroupEntry) Info 

func (s *UnknownSampleGroupEntry) Info(w io.Writer, specificBoxLevels, indent, indentStep string) (err error)

Info - write box info to w

func (*UnknownSampleGroupEntry) Size 

func (s *UnknownSampleGroupEntry) Size() uint64

Size of SampleGroup Entry

func (*UnknownSampleGroupEntry) Type 

func (s *UnknownSampleGroupEntry) Type() string

Type - GroupingType SampleGroupEntry (uint32 according to spec)

type VisualSampleEntryBox 

type VisualSampleEntryBox struct {
	DataReferenceIndex uint16
	Width              uint16
	Height             uint16
	Horizresolution    uint32
	Vertresolution     uint32
	FrameCount         uint16
	CompressorName     string
	AvcC               *AvcCBox
	HvcC               *HvcCBox
	Btrt               *BtrtBox
	Clap               *ClapBox
	Pasp               *PaspBox
	Sinf               *SinfBox
	Children           []Box
	// contains filtered or unexported fields
}

VisualSampleEntryBox - Video Sample Description box (avc1/avc3)

func CreateVisualSampleEntryBox 

func CreateVisualSampleEntryBox(name string, width, height uint16, sampleEntry Box) *VisualSampleEntryBox

CreateVisualSampleEntryBox - Create new VisualSampleEntry such as avc1, avc3, hev1, hvc1

func NewVisualSampleEntryBox 

func NewVisualSampleEntryBox(name string) *VisualSampleEntryBox

NewVisualSampleEntryBox - Create new empty avc1 or avc3 box

func (*VisualSampleEntryBox) AddChild 

func (b *VisualSampleEntryBox) AddChild(child Box)

AddChild - add a child box (avcC normally, but clap and pasp could be part of visual entry)

func (*VisualSampleEntryBox) ConvertAvc3ToAvc1 

func (b *VisualSampleEntryBox) ConvertAvc3ToAvc1(spss [][]byte, ppss [][]byte) error

ConvertAvc3ToHvc1 - contert visual sample entry box type and insert SPS and PPS parameter sets

func (*VisualSampleEntryBox) ConvertHev1ToHvc1 

func (b *VisualSampleEntryBox) ConvertHev1ToHvc1(vpss [][]byte, spss [][]byte, ppss [][]byte) error

ConvertHev1ToHvc1 - contert visual sample entry box type and insert VPS, SPS, and PPS parameter sets

func (*VisualSampleEntryBox) Encode 

func (b *VisualSampleEntryBox) Encode(w io.Writer) error

Encode - write box to w

func (*VisualSampleEntryBox) EncodeSW 

func (b *VisualSampleEntryBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write box to sw

func (*VisualSampleEntryBox) Info 

func (b *VisualSampleEntryBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write specific box information

func (*VisualSampleEntryBox) RemoveEncryption 

func (b *VisualSampleEntryBox) RemoveEncryption() (*SinfBox, error)

RemoveEncryption - remove sinf box and set type to unencrypted type

func (*VisualSampleEntryBox) SetType 

func (b *VisualSampleEntryBox) SetType(name string)

SetType - set the type (name) of the box

func (*VisualSampleEntryBox) Size 

func (b *VisualSampleEntryBox) Size() uint64

Size - return calculated size

func (*VisualSampleEntryBox) Type 

func (b *VisualSampleEntryBox) Type() string

Type - return box type

type VlabBox 

type VlabBox struct {
	SourceLabel string
}

VlabBox - WebVTTSourceLabelBox (vlab)

func (*VlabBox) Encode 

func (b *VlabBox) Encode(w io.Writer) error

Encode - write box to w

func (*VlabBox) EncodeSW 

func (b *VlabBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*VlabBox) Info 

func (b *VlabBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VlabBox) Size 

func (b *VlabBox) Size() uint64

Size - calculated size of box

func (*VlabBox) Type 

func (b *VlabBox) Type() string

Type - box-specific type

type VmhdBox 

type VmhdBox struct {
	Version      byte
	Flags        uint32
	GraphicsMode uint16
	OpColor      [3]uint16
}

VmhdBox - Video Media Header Box (vhmd - mandatory for video tracks)

Contained in : Media Information Box (minf)

func CreateVmhd 

func CreateVmhd() *VmhdBox

CreateVmhd - Create Video Media Header Box

func (*VmhdBox) Encode 

func (b *VmhdBox) Encode(w io.Writer) error

Encode - write box to w

func (*VmhdBox) EncodeSW 

func (b *VmhdBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*VmhdBox) Info 

func (b *VmhdBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VmhdBox) Size 

func (b *VmhdBox) Size() uint64

Size - calculated size of box

func (*VmhdBox) Type 

func (b *VmhdBox) Type() string

Type - box-specific type

type VsidBox 

type VsidBox struct {
	SourceID uint32
}

VsidBox - CueSourceIDBox (vsid)

func (*VsidBox) Encode 

func (b *VsidBox) Encode(w io.Writer) error

Encode - write box to w

func (*VsidBox) EncodeSW 

func (b *VsidBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*VsidBox) Info 

func (b *VsidBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VsidBox) Size 

func (b *VsidBox) Size() uint64

Size - calculated size of box

func (*VsidBox) Type 

func (b *VsidBox) Type() string

Type - box-specific type

type VttCBox 

type VttCBox struct {
	Config string
}

VttCBox - WebVTTConfigurationBox (vttC)

func (*VttCBox) Encode 

func (b *VttCBox) Encode(w io.Writer) error

Encode - write box to w

func (*VttCBox) EncodeSW 

func (b *VttCBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*VttCBox) Info 

func (b *VttCBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VttCBox) Size 

func (b *VttCBox) Size() uint64

Size - calculated size of box

func (*VttCBox) Type 

func (b *VttCBox) Type() string

Type - box-specific type

type VttaBox 

type VttaBox struct {
	CueAdditionalText string
}

VttaBox - VTTAdditionalTextBox (vtta) (corresponds to NOTE in WebVTT)

func (*VttaBox) Encode 

func (b *VttaBox) Encode(w io.Writer) error

Encode - write box to w

func (*VttaBox) EncodeSW 

func (b *VttaBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*VttaBox) Info 

func (b *VttaBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VttaBox) Size 

func (b *VttaBox) Size() uint64

Size - calculated size of box

func (*VttaBox) Type 

func (b *VttaBox) Type() string

Type - box-specific type

type VttcBox 

type VttcBox struct {
	Vsid     *VsidBox
	Iden     *IdenBox
	Ctim     *CtimBox
	Sttg     *SttgBox
	Payl     *PaylBox
	Children []Box
}

VttcBox - VTTCueBox (vttc)

func (*VttcBox) AddChild 

func (b *VttcBox) AddChild(child Box)

AddChild - Add a child box

func (*VttcBox) Encode 

func (b *VttcBox) Encode(w io.Writer) error

Encode - write mvex container to w

func (*VttcBox) EncodeSW 

func (b *VttcBox) EncodeSW(sw bits.SliceWriter) error

Encode - write vttc container to sw

func (*VttcBox) GetChildren 

func (b *VttcBox) GetChildren() []Box

GetChildren - list of child boxes

func (*VttcBox) Info 

func (b *VttcBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VttcBox) Size 

func (b *VttcBox) Size() uint64

Size - return calculated size

func (*VttcBox) Type 

func (b *VttcBox) Type() string

Type - return box type

type VtteBox 

type VtteBox struct {
}

VtteBox - VTTEmptyBox (vtte)

func (*VtteBox) Encode 

func (b *VtteBox) Encode(w io.Writer) error

Encode - write box to w

func (*VtteBox) EncodeSW 

func (b *VtteBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - box-specific encode to slicewriter

func (*VtteBox) Info 

func (b *VtteBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*VtteBox) Size 

func (b *VtteBox) Size() uint64

Size - calculated size of box

func (*VtteBox) Type 

func (b *VtteBox) Type() string

Type - box-specific type

type WvttBox 

type WvttBox struct {
	VttC               *VttCBox
	Vlab               *VlabBox
	Btrt               *BtrtBox
	Children           []Box
	DataReferenceIndex uint16
}

WvttBox - WVTTSampleEntry (wvtt) Extends PlainTextSampleEntry which extends SampleEntry

func NewWvttBox 

func NewWvttBox() *WvttBox

NewWvttBox - Create new empty wvtt box

func (*WvttBox) AddChild 

func (b *WvttBox) AddChild(child Box)

AddChild - add a child box

func (*WvttBox) Encode 

func (b *WvttBox) Encode(w io.Writer) error

Encode - write box to w

func (*WvttBox) EncodeSW 

func (b *WvttBox) EncodeSW(sw bits.SliceWriter) error

EncodeSW - write box to w

func (*WvttBox) Info 

func (b *WvttBox) Info(w io.Writer, specificBoxLevels, indent, indentStep string) error

Info - write box-specific information

func (*WvttBox) Size 

func (b *WvttBox) Size() uint64

Size - return calculated size

func (*WvttBox) Type 

func (b *WvttBox) Type() string

Type - return box type

Source Files

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