Golang package for m3u8 (ported m3u8 gem https://github.com/sethdeckard/m3u8)
go-m3u8
provides easy generation and parsing of m3u8 playlists defined in the HTTP Live Streaming (HLS) Internet Draft published by Apple.
- The library completely implements version 20 of the HLS Internet Draft.
- Provides parsing of an m3u8 playlist into an object model from any File, io.Reader or string.
- Provides ability to write playlist to a string via String()
- Distinction between a master and media playlist is handled automatically (single Playlist class).
- Optionally, the library can automatically generate the audio/video codecs string used in the CODEC attribute based on specified H.264, AAC, or MP3 options (such as Profile/Level).
go get github.com/quangngotan95/go-m3u8
Create a master playlist and child playlists for adaptive bitrate streaming:
import (
"github.com/quangngotan95/go-m3u8/m3u8"
"github.com/AlekSi/pointer"
)
playlist := m3u8.NewPlaylist()
Create a new playlist item:
item := &m3u8.PlaylistItem{
Width: pointer.ToInt(1920),
Height: pointer.ToInt(1080),
Profile: pointer.ToString("high"),
Level: pointer.ToString("4.1"),
AudioCodec: pointer.ToString("aac-lc"),
Bandwidth: 540,
URI: "test.url",
}
playlist.AppendItem(item)
Add alternate audio, camera angles, closed captions and subtitles by creating MediaItem instances and adding them to the Playlist:
item := &m3u8.MediaItem{
Type: "AUDIO",
GroupID: "audio-lo",
Name: "Francais",
Language: pointer.ToString("fre"),
AssocLanguage: pointer.ToString("spoken"),
AutoSelect: pointer.ToBool(true),
Default: pointer.ToBool(false),
Forced: pointer.ToBool(true),
URI: pointer.ToString("frelo/prog_index.m3u8"),
}
playlist.AppendItem(item)
Create a standard playlist and add MPEG-TS segments via SegmentItem. You can also specify options for this type of playlist, however these options are ignored if playlist becomes a master playlist (anything but segments added):
playlist := &m3u8.Playlist{
Target: 12,
Sequence: 1,
Version: pointer.ToInt(1),
Cache: pointer.ToBool(false),
Items: []m3u8.Item{
&m3u8.SegmentItem{
Duration: 11,
Segment: "test.ts",
},
},
}
You can also access the playlist as a string:
var str string
str = playlist.String()
...
fmt.Print(playlist)
Alternatively you can set codecs rather than having it generated automatically:
item := &m3u8.PlaylistItem{
Width: pointer.ToInt(1920),
Height: pointer.ToInt(1080),
Codecs: pointer.ToString("avc1.66.30,mp4a.40.2"),
Bandwidth: 540,
URI: "test.url",
}
Parse from file
playlist, err := m3u8.ReadFile("path/to/file")
Read from string
playlist, err := m3u8.ReadString(string)
Read from generic io.Reader
playlist, err := m3u8.Read(reader)
Access items in playlist:
gore> playlist.Items[0]
(*m3u8.SessionKeyItem)#EXT-X-SESSION-KEY:METHOD=AES-128,URI="https://priv.example.com/key.php?r=52"
gore> playlist.Items[1]
(*m3u8.PlaybackStart)#EXT-X-START:TIME-OFFSET=20.2
Codecs:
- Values for audio_codec (codec name): aac-lc, he-aac, mp3
- Values for profile (H.264 Profile): baseline, main, high.
- Values for level (H.264 Level): 3.0, 3.1, 4.0, 4.1.
Not all Levels and Profiles can be combined and validation is not currently implemented, consult H.264 documentation for further details.
- Fork it https://github.com/quangngotan95/go-m3u8/fork
- Create your feature branch
git checkout -b my-new-feature
- Run tests
go test ./test/...
, make sure they all pass and new features are covered - Commit your changes
git commit -am "Add new features"
- Push to the branch
git push origin my-new-feature
- Create a new Pull Request
MIT License - See LICENSE for details