hls

README

HLS

• https://developer.apple.com/documentation/http_live_streaming/http_live_streaming_hls_authoring_specification_for_apple_devices/hls_authoring_specification_for_apple_devices_appendixes
• https://wikipedia.org/wiki/HTTP_Live_Streaming

CBC

Why does this:

#EXT-X-KEY:METHOD=AES-128,URI="https://cbsios-vh.akamaihd.net/i/temp_hd_galle...

mean CBC?

An encryption method of AES-128 signals that Media Segments are completely encrypted using the Advanced Encryption Standard (AES) [AES_128] with a 128-bit key, Cipher Block Chaining (CBC)

https://datatracker.ietf.org/doc/html/rfc8216#section-4.3.2.4

EXT-X-KEY

If IV is missing, then use KEY for both.

Padding

Public-Key Cryptography Standards #7 (PKCS7) padding [RFC5652]

• https://wikipedia.org/wiki/Padding_(cryptography)#PKCS#5_and_PKCS#7
• https://datatracker.ietf.org/doc/html/rfc5652
• https://datatracker.ietf.org/doc/html/rfc8216#section-4.3.2.4

Extensions

item	format
Apple audio	mov,mp4,m4a,3gp,3g2,mj2
Apple video	mov,mp4,m4a,3gp,3g2,mj2
CBC audio	mpegts
CBC video	mpegts
NBC	mpegts
Paramount	mpegts
Roku	mpegts

Documentation

Index

• type Block
  • func New_Block(key []byte) (*Block, error)
  • func (b Block) Decrypt(text, iv []byte) []byte
  • func (b Block) Decrypt_Key(text []byte) []byte
• type Master
• type Media
  • func (Media) Ext() string
  • func (m Media) String() string
  • func (m Media) URI() string
• type Mixed
• type Scanner
  • func New_Scanner(body io.Reader) Scanner
  • func (s Scanner) Master() (*Master, error)
  • func (s Scanner) Segment() (*Segment, error)
• type Segment
  • func (s Segment) IV() ([]byte, error)
• type Stream
  • func (Stream) Ext() string
  • func (m Stream) String() string
  • func (m Stream) URI() string

Types

type Block

type Block struct {
	cipher.Block
	// contains filtered or unexported fields
}

func New_Block

func New_Block(key []byte) (*Block, error)

func (Block) Decrypt

func (b Block) Decrypt(text, iv []byte) []byte

func (Block) Decrypt_Key

func (b Block) Decrypt_Key(text []byte) []byte

type Master

type Master struct {
	Media  []Media
	Stream []Stream
}

type Media

type Media struct {
	Group_ID        string
	Type            string
	Name            string
	Characteristics string
	Raw_URI         string
}

func (Media) Ext

func (Media) Ext() string

func (Media) String

func (m Media) String() string

func (Media) URI

func (m Media) URI() string

type Mixed

type Mixed interface {
	Ext() string
	URI() string
}

type Scanner

type Scanner struct {
	scanner.Scanner
	// contains filtered or unexported fields
}

func New_Scanner

func New_Scanner(body io.Reader) Scanner

func (Scanner) Master

func (s Scanner) Master() (*Master, error)

func (Scanner) Segment

func (s Scanner) Segment() (*Segment, error)

type Segment

type Segment struct {
	Key    string
	Map    string
	Raw_IV string
	URI    []string
}

func (Segment) IV

func (s Segment) IV() ([]byte, error)

type Stream

type Stream struct {
	Bandwidth  int64
	Raw_URI    string
	Audio      string
	Codecs     string
	Resolution string
}

func (Stream) Ext

func (Stream) Ext() string

func (Stream) String

func (m Stream) String() string

func (Stream) URI

func (m Stream) URI() string