ffmpeg

package
v1.0.1-ni Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Mar 19, 2023 License: MIT Imports: 20 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PixelFormatNone        int = C.AV_PIX_FMT_NONE
	PixelFormatYUV420P     int = C.AV_PIX_FMT_YUV420P
	PixelFormatYUYV422     int = C.AV_PIX_FMT_YUYV422
	PixelFormatYUV422P     int = C.AV_PIX_FMT_YUV422P
	PixelFormatYUV444P     int = C.AV_PIX_FMT_YUV444P
	PixelFormatUYVY422     int = C.AV_PIX_FMT_UYVY422
	PixelFormatNV12        int = C.AV_PIX_FMT_NV12
	PixelFormatNV21        int = C.AV_PIX_FMT_NV21
	PixelFormatYUV420P10BE int = C.AV_PIX_FMT_YUV420P10BE
	PixelFormatYUV420P10LE int = C.AV_PIX_FMT_YUV420P10LE
	PixelFormatYUV422P10BE int = C.AV_PIX_FMT_YUV422P10BE
	PixelFormatYUV422P10LE int = C.AV_PIX_FMT_YUV422P10LE
	PixelFormatYUV444P10BE int = C.AV_PIX_FMT_YUV444P10BE
	PixelFormatYUV444P10LE int = C.AV_PIX_FMT_YUV444P10LE
	PixelFormatYUV420P16LE int = C.AV_PIX_FMT_YUV420P16LE
	PixelFormatYUV420P16BE int = C.AV_PIX_FMT_YUV420P16BE
	PixelFormatYUV422P16LE int = C.AV_PIX_FMT_YUV422P16LE
	PixelFormatYUV422P16BE int = C.AV_PIX_FMT_YUV422P16BE
	PixelFormatYUV444P16LE int = C.AV_PIX_FMT_YUV444P16LE
	PixelFormatYUV444P16BE int = C.AV_PIX_FMT_YUV444P16BE
	PixelFormatYUV420P12BE int = C.AV_PIX_FMT_YUV420P12BE
	PixelFormatYUV420P12LE int = C.AV_PIX_FMT_YUV420P12LE
	PixelFormatYUV422P12BE int = C.AV_PIX_FMT_YUV422P12BE
	PixelFormatYUV422P12LE int = C.AV_PIX_FMT_YUV422P12LE
	PixelFormatYUV444P12BE int = C.AV_PIX_FMT_YUV444P12BE
	PixelFormatYUV444P12LE int = C.AV_PIX_FMT_YUV444P12LE
)
View Source 
const (
	FFLogTrace   = C.LPMS_LOG_TRACE
	FFLogDebug   = C.LPMS_LOG_DEBUG
	FFLogVerbose = C.LPMS_LOG_VERBOSE
	FFLogInfo    = C.LPMS_LOG_INFO
	FFLogWarning = C.LPMS_LOG_WARNING
	FFLogError   = C.LPMS_LOG_ERROR
	FFLogFatal   = C.LPMS_LOG_FATAL
	FFLogPanic   = C.LPMS_LOG_PANIC
	FFLogQuiet   = C.LPMS_LOG_QUIET
)
View Source 
const (
	GOPIntraOnly time.Duration = -1

	// Must always be last. Renumber as needed.
	GOPInvalid = -2
)

For additional "special" GOP values enumerate backwards from here

View Source 
const (
	SceneClassification = iota
)

Variables

View Source 
var (
	DSceneAdultSoccer = SceneClassificationProfile{
		SampleRate: 30,
		ModelPath:  "tasmodel.pb",
		Input:      "input_1",
		Output:     "Identity",
		Classes:    []DetectorClass{{ID: 0, Name: "adult"}, {ID: 1, Name: "soccer"}},
	}
	DSceneViolence = SceneClassificationProfile{
		SampleRate: 30,
		ModelPath:  "tviomodel.pb",
		Input:      "input_1",
		Output:     "reshape_3/Reshape",
		Classes:    []DetectorClass{{ID: 2, Name: "violence"}},
	}
)
View Source 
var (
	P720p60fps16x9 = VideoProfile{Name: "P720p60fps16x9", Bitrate: "6000k", Framerate: 60, AspectRatio: "16:9", Resolution: "1280x720"}
	P720p30fps16x9 = VideoProfile{Name: "P720p30fps16x9", Bitrate: "4000k", Framerate: 30, AspectRatio: "16:9", Resolution: "1280x720"}
	P720p25fps16x9 = VideoProfile{Name: "P720p25fps16x9", Bitrate: "3500k", Framerate: 25, AspectRatio: "16:9", Resolution: "1280x720"}
	P720p30fps4x3  = VideoProfile{Name: "P720p30fps4x3", Bitrate: "3500k", Framerate: 30, AspectRatio: "4:3", Resolution: "960x720"}
	P576p30fps16x9 = VideoProfile{Name: "P576p30fps16x9", Bitrate: "1500k", Framerate: 30, AspectRatio: "16:9", Resolution: "1024x576"}
	P576p25fps16x9 = VideoProfile{Name: "P576p25fps16x9", Bitrate: "1500k", Framerate: 25, AspectRatio: "16:9", Resolution: "1024x576"}
	P360p30fps16x9 = VideoProfile{Name: "P360p30fps16x9", Bitrate: "1200k", Framerate: 30, AspectRatio: "16:9", Resolution: "640x360"}
	P360p25fps16x9 = VideoProfile{Name: "P360p25fps16x9", Bitrate: "1000k", Framerate: 25, AspectRatio: "16:9", Resolution: "640x360"}
	P360p30fps4x3  = VideoProfile{Name: "P360p30fps4x3", Bitrate: "1000k", Framerate: 30, AspectRatio: "4:3", Resolution: "480x360"}
	P240p30fps16x9 = VideoProfile{Name: "P240p30fps16x9", Bitrate: "600k", Framerate: 30, AspectRatio: "16:9", Resolution: "426x240"}
	P240p25fps16x9 = VideoProfile{Name: "P240p25fps16x9", Bitrate: "600k", Framerate: 25, AspectRatio: "16:9", Resolution: "426x240"}
	P240p30fps4x3  = VideoProfile{Name: "P240p30fps4x3", Bitrate: "600k", Framerate: 30, AspectRatio: "4:3", Resolution: "320x240"}
	P144p30fps16x9 = VideoProfile{Name: "P144p30fps16x9", Bitrate: "400k", Framerate: 30, AspectRatio: "16:9", Resolution: "256x144"}
	P144p25fps16x9 = VideoProfile{Name: "P144p25fps16x9", Bitrate: "400k", Framerate: 25, AspectRatio: "16:9", Resolution: "256x144"}
)

Some sample video profiles

View Source 
var AccelerationNameLookup = map[Acceleration]string{
	Software: "SW",
	Nvidia:   "Nvidia",
	Amd:      "Amd",
	Netint:   "Netint",
}
View Source 
var DetectorClassIDLookup = map[string]int{
	"adult":    0,
	"soccer":   1,
	"violence": 2,
}
View Source 
var EncoderProfileLookup = map[string]Profile{
	"":                    ProfileNone,
	"none":                ProfileNone,
	"h264baseline":        ProfileH264Baseline,
	"h264main":            ProfileH264Main,
	"h264high":            ProfileH264High,
	"h264constrainedhigh": ProfileH264ConstrainedHigh,
}
View Source 
var ErrCodecName = fmt.Errorf("unknown codec name")
View Source 
var ErrDNNInitialize = errors.New("DetectorInitializationError")
View Source 
var ErrEmptyData = errors.New("EmptyData")
View Source 
var ErrProfName = fmt.Errorf("unknown VideoProfile profile name")
View Source 
var ErrSignCompare = errors.New("InvalidSignData")
View Source 
var ErrTranscoderClipConfig = errors.New("TranscoderInvalidClipConfig")
View Source 
var ErrTranscoderDev = errors.New("TranscoderIncompatibleDevices")
View Source 
var ErrTranscoderFmt = errors.New("TranscoderUnrecognizedFormat")
View Source 
var ErrTranscoderGOP = errors.New("TranscoderInvalidGOP")
View Source 
var ErrTranscoderHw = errors.New("TranscoderInvalidHardware")
View Source 
var ErrTranscoderInp = errors.New("TranscoderInvalidInput")
View Source 
var ErrTranscoderPixelformat = errors.New("TranscoderInvalidPixelformat")
View Source 
var ErrTranscoderPrf = errors.New("TranscoderUnrecognizedProfile")
View Source 
var ErrTranscoderRes = errors.New("TranscoderInvalidResolution")
View Source 
var ErrTranscoderStp = errors.New("TranscoderStopped")
View Source 
var ErrTranscoderVid = errors.New("TranscoderInvalidVideo")
View Source 
var ErrVideoCompare = errors.New("InvalidVideoData")
View Source 
var ErrorMap = error_map()
View Source 
var ExtensionFormats = map[string]Format{
	".ts":  FormatMPEGTS,
	".mp4": FormatMP4,
}
View Source 
var FfEncoderLookup = map[Acceleration]map[VideoCodec]string{
	Software: {
		H264: "libx264",
		H265: "libx265",
		VP8:  "libvpx",
		VP9:  "libvpx-vp9",
	},
	Nvidia: {
		H264: "h264_nvenc",
		H265: "hevc_nvenc",
	},
	Netint: {
		H264: "h264_ni_enc",
		H265: "h265_ni_enc",
	},
}
View Source 
var FfmpegNameToVideoCodec = map[string]VideoCodec{
	"h264": H264,
	"hevc": H265,
	"vp8":  VP8,
	"vp9":  VP9,
}
View Source 
var FormatExtensions = map[Format]string{
	FormatNone:   ".ts",
	FormatMPEGTS: ".ts",
	FormatMP4:    ".mp4",
}
View Source 
var LogTranscodeErrors = true

Switch to turn off logging transcoding errors, when doing test transcoding

View Source 
var NonRetryableErrs = non_retryable_errs()
View Source 
var ProfileParameters = map[Profile]string{
	ProfileNone:                "",
	ProfileH264Baseline:        "baseline",
	ProfileH264Main:            "main",
	ProfileH264High:            "high422",
	ProfileH264ConstrainedHigh: "high422",
}
View Source 
var SceneClassificationProfileLookup = map[string]SceneClassificationProfile{
	"adult":    DSceneAdultSoccer,
	"soccer":   DSceneAdultSoccer,
	"violence": DSceneViolence,
}
View Source 
var VideoCodecName = map[VideoCodec]string{
	H264: "H.264",
	H265: "HEVC",
	VP8:  "VP8",
	VP9:  "VP9",
}
View Source 
var VideoProfileLookup = map[string]VideoProfile{
	"P720p60fps16x9": P720p60fps16x9,
	"P720p30fps16x9": P720p30fps16x9,
	"P720p25fps16x9": P720p25fps16x9,
	"P720p30fps4x3":  P720p30fps4x3,
	"P576p30fps16x9": P576p30fps16x9,
	"P576p25fps16x9": P576p25fps16x9,
	"P360p30fps16x9": P360p30fps16x9,
	"P360p25fps16x9": P360p25fps16x9,
	"P360p30fps4x3":  P360p30fps4x3,
	"P240p30fps16x9": P240p30fps16x9,
	"P240p25fps16x9": P240p25fps16x9,
	"P240p30fps4x3":  P240p30fps4x3,
	"P144p30fps16x9": P144p30fps16x9,
}

Functions

func CompareSignatureByBuffer 

func CompareSignatureByBuffer(data1 []byte, data2 []byte) (bool, error)

compare two signature buffers whether those matches or not

func CompareSignatureByPath 

func CompareSignatureByPath(fname1 string, fname2 string) (bool, error)

compare two signature files whether those matches or not

func CompareVideoByBuffer 

func CompareVideoByBuffer(data1 []byte, data2 []byte) (bool, error)

compare two video buffers whether those matches or not

func CompareVideoByPath 

func CompareVideoByPath(fname1 string, fname2 string) (bool, error)

compare two vidoe files whether those matches or not

func DefaultProfileName 

func DefaultProfileName(width int, height int, bitrate int) string

func FfmpegGetLogLevel 

func FfmpegGetLogLevel() int

func FfmpegSetLogLevel 

func FfmpegSetLogLevel(level int)

func GetCodecInfo 

func GetCodecInfo(fname string) (CodecStatus, MediaFormatInfo, error)

func GetCodecInfoBytes 

func GetCodecInfoBytes(data []byte) (CodecStatus, MediaFormatInfo, error)

GetCodecInfo opens the segment and attempts to get video and audio codec names. Additionally, first return value indicates whether the segment has zero video frames

func HasZeroVideoFrameBytes 

func HasZeroVideoFrameBytes(data []byte) (bool, error)

HasZeroVideoFrameBytes opens video and returns true if it has video stream with 0-frame

func InitFFmpeg 

func InitFFmpeg()

func InitFFmpegWithLogLevel 

func InitFFmpegWithLogLevel(level LogLevel)

func RTMPToHLS 

func RTMPToHLS(localRTMPUrl string, outM3U8 string, tmpl string, seglen_secs string, seg_start int) error

func Strerror 

func Strerror(errnum int) string

Strerror returns a descriptive string of the given return code.

C-Function: av_strerror

func Transcode 

func Transcode(input string, workDir string, ps []VideoProfile) error

func Transcode2 

func Transcode2(input *TranscodeOptionsIn, ps []TranscodeOptions) error

func VideoProfileResolution 

func VideoProfileResolution(p VideoProfile) (int, int, error)

func VideoProfileToVariantParams 

func VideoProfileToVariantParams(p VideoProfile) m3u8.VariantParams

Types

type Acceleration 

type Acceleration int
const (
	Software Acceleration = iota
	Nvidia
	Amd
	Netint
)

type ByName 

type ByName []VideoProfile

func (ByName) Len 

func (a ByName) Len() int

func (ByName) Less 

func (a ByName) Less(i, j int) bool

func (ByName) Swap 

func (a ByName) Swap(i, j int)

type ChromaSubsampling 

type ChromaSubsampling int
const (
	ChromaSubsampling420 ChromaSubsampling = iota
	ChromaSubsampling422
	ChromaSubsampling444
)

type CodecStatus 

type CodecStatus int
const (
	CodecStatusInternalError CodecStatus = -1
	CodecStatusOk            CodecStatus = 0
	CodecStatusNeedsBypass   CodecStatus = 1
	CodecStatusMissing       CodecStatus = 2
)

type CodingSizeLimit 

type CodingSizeLimit struct {
	WidthMin, HeightMin int
	WidthMax, HeightMax int
}

func (*CodingSizeLimit) Clamp 

func (l *CodingSizeLimit) Clamp(p *VideoProfile, format MediaFormatInfo) error

type ColorDepthBits 

type ColorDepthBits int

hold bit number minus 8; ColorDepthBits + 8 == bit number 

const (
	ColorDepth8Bit  ColorDepthBits = 0
	ColorDepth10Bit ColorDepthBits = 2
	ColorDepth12Bit ColorDepthBits = 4
	ColorDepth16Bit ColorDepthBits = 8
)

type ComponentOptions 

type ComponentOptions struct {
	Name string
	Opts map[string]string
}

type DetectData 

type DetectData interface {
	Type() DetectorType
}

type DetectorClass 

type DetectorClass struct {
	ID   int    // unique ID within LPMS per class
	Name string // unique Name within LPMS per class
}

type DetectorProfile 

type DetectorProfile interface {
	Type() DetectorType
}

type DetectorType 

type DetectorType int

type Format 

type Format int
const (
	FormatNone Format = iota
	FormatMPEGTS
	FormatMP4
)

type JsonProfile 

type JsonProfile struct {
	Name         string            `json:"name"`
	Width        int               `json:"width"`
	Height       int               `json:"height"`
	Bitrate      int               `json:"bitrate"`
	FPS          uint              `json:"fps"`
	FPSDen       uint              `json:"fpsDen"`
	Profile      string            `json:"profile"`
	GOP          string            `json:"gop"`
	Encoder      string            `json:"encoder"`
	ColorDepth   ColorDepthBits    `json:"colorDepth"`
	ChromaFormat ChromaSubsampling `json:"chromaFormat"`
}

type LogLevel 

type LogLevel C.enum_LPMSLogLevel

type MediaFormatInfo 

type MediaFormatInfo struct {
	Acodec, Vcodec string
	PixFormat      PixelFormat
	Width, Height  int
}

func (*MediaFormatInfo) ScaledHeight 

func (f *MediaFormatInfo) ScaledHeight(width int) int

func (*MediaFormatInfo) ScaledWidth 

func (f *MediaFormatInfo) ScaledWidth(height int) int

type MediaInfo 

type MediaInfo struct {
	Frames     int
	Pixels     int64
	DetectData DetectData
}

type PixelFormat 

type PixelFormat struct {
	RawValue int
}

func (PixelFormat) Properties 

func (pixelFormat PixelFormat) Properties() (ChromaSubsampling, ColorDepthBits, error)

type Profile 

type Profile int
const (
	ProfileNone Profile = iota
	ProfileH264Baseline
	ProfileH264Main
	ProfileH264High
	ProfileH264ConstrainedHigh
)

func EncoderProfileNameToValue 

func EncoderProfileNameToValue(profile string) (Profile, error)

type SceneClassificationData 

type SceneClassificationData map[int]float64

func (SceneClassificationData) Type 

func (scd SceneClassificationData) Type() DetectorType

type SceneClassificationProfile 

type SceneClassificationProfile struct {
	SampleRate uint
	ModelPath  string
	Input      string
	Output     string
	Classes    []DetectorClass
}

func (*SceneClassificationProfile) Type 

func (p *SceneClassificationProfile) Type() DetectorType

type Size 

type Size struct {
	W, H int
}

func (*Size) Valid 

func (s *Size) Valid(l *CodingSizeLimit) bool

type TranscodeOptions 

type TranscodeOptions struct {
	Oname    string
	Profile  VideoProfile
	Detector DetectorProfile
	Accel    Acceleration
	Device   string
	CalcSign bool
	From     time.Duration
	To       time.Duration

	Muxer        ComponentOptions
	VideoEncoder ComponentOptions
	AudioEncoder ComponentOptions
}

type TranscodeOptionsIn 

type TranscodeOptionsIn struct {
	Fname       string
	Accel       Acceleration
	Device      string
	Transmuxing bool
}

type TranscodeResults 

type TranscodeResults struct {
	Decoded MediaInfo
	Encoded []MediaInfo
}

func Transcode3 

func Transcode3(input *TranscodeOptionsIn, ps []TranscodeOptions) (*TranscodeResults, error)

type Transcoder 

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

func NewTranscoder 

func NewTranscoder() *Transcoder

func NewTranscoderWithDetector 

func NewTranscoderWithDetector(detector DetectorProfile, deviceid string) (*Transcoder, error)

func (*Transcoder) Discontinuity 

func (t *Transcoder) Discontinuity()

func (*Transcoder) StopTranscoder 

func (t *Transcoder) StopTranscoder()

func (*Transcoder) Transcode 

func (t *Transcoder) Transcode(input *TranscodeOptionsIn, ps []TranscodeOptions) (*TranscodeResults, error)

type VideoCodec 

type VideoCodec int
const (
	H264 VideoCodec = iota
	H265
	VP8
	VP9
)

func CodecNameToValue 

func CodecNameToValue(encoder string) (VideoCodec, error)

type VideoProfile 

type VideoProfile struct {
	Name         string
	Bitrate      string
	Framerate    uint
	FramerateDen uint
	Resolution   string
	AspectRatio  string
	Format       Format
	Profile      Profile
	GOP          time.Duration
	Encoder      VideoCodec
	ColorDepth   ColorDepthBits
	ChromaFormat ChromaSubsampling
}

Standard Profiles: 1080p60fps: 9000kbps 1080p30fps: 6000kbps 720p60fps: 6000kbps 720p30fps: 4000kbps 480p30fps: 2000kbps 360p30fps: 1000kbps 240p30fps: 700kbps 144p30fps: 400kbps

func ParseProfiles 

func ParseProfiles(injson []byte) ([]VideoProfile, error)

func ParseProfilesFromJsonProfileArray 

func ParseProfilesFromJsonProfileArray(profiles []JsonProfile) ([]VideoProfile, error)

Source Files

View all Source files

Directories

Path Synopsis

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.