hls

README

HLS

• https://wikipedia.org/wiki/HTTP_Live_Streaming
• https://godocs.io/net/url#URL.ResolveReference
• https://play.google.com/store/apps/details?id=com.cbs.app

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.

https://github.com/oopsguy/m3u8/blob/master/tool/crypt.go#L25-L39

Documentation

Index

• type Decrypter
  • func NewDecrypter(src io.Reader) (*Decrypter, error)
  • func (d Decrypter) Copy(dst io.Writer, src io.Reader) (int, error)
• type Information
• type Key
• type Master
  • func NewMaster(addr *url.URL, body io.Reader) (*Master, error)
  • func (m Master) GetMedia(str *Stream) *Media
  • func (m Master) GetStream(fn func(Stream) bool) *Stream
• type Media
• type Segment
  • func NewSegment(addr *url.URL, body io.Reader) (*Segment, error)
  • func (s Segment) Ext() (string, error)
• type Stream
  • func (s Stream) String() string

Types

type Decrypter

type Decrypter struct {
	cipher.Block
	IV []byte
}

func NewDecrypter

func NewDecrypter(src io.Reader) (*Decrypter, error)

func (Decrypter) Copy

func (d Decrypter) Copy(dst io.Writer, src io.Reader) (int, error)

type Information

type Information struct {
	Duration string
	URI      string
}

type Key

type Key struct {
	Method string
	URI    string
}

type Master

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

func NewMaster

func NewMaster(addr *url.URL, body io.Reader) (*Master, error)

func (Master) GetMedia

func (m Master) GetMedia(str *Stream) *Media

func (Master) GetStream

func (m Master) GetStream(fn func(Stream) bool) *Stream

type Media

type Media struct {
	GroupID string
	URI     string
}

type Segment

type Segment struct {
	Key  *Key
	Info []Information
}

func NewSegment

func NewSegment(addr *url.URL, body io.Reader) (*Segment, error)

func (Segment) Ext

func (s Segment) Ext() (string, error)

type Stream

type Stream struct {
	Resolution string
	Bandwidth  int64  // handle duplicate resolution
	Codecs     string // handle audio only
	Audio      string // link to Media
	URI        string
}

func (Stream) String

func (s Stream) String() string