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https://github.com/grafov/m3u8

Parser and generator of M3U8-playlists for Apple HLS. Library for Go language. :cinema:
https://github.com/grafov/m3u8

golang hls http-live-streaming lib library m3u8 m3u8-playlist manifest parsing playlist-generator playlist-parser rfc-8216

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Parser and generator of M3U8-playlists for Apple HLS. Library for Go language. :cinema:

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README 

        

M3U8 [![](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go#video)

====



Project status

---------------



Project support suspended and code moved to read only archive.

https://github.com/grafov/m3u8/issues/225



About

-----



This is the most complete opensource library for parsing and generating of M3U8 playlists

used in HTTP Live Streaming (Apple HLS) for internet video translations.



M3U8 is simple text format and parsing library for it must be simple too. It does not offer

ways to play HLS or handle playlists over HTTP. So library features are:



* Support HLS specs up to version 5 of the protocol.

* Parsing and generation of master-playlists and media-playlists.

* Autodetect input streams as master or media playlists.

* Offer structures for keeping playlists metadata.

* Encryption keys support for use with DRM systems like [Verimatrix](http://verimatrix.com) etc.

* Support for non standard [Google Widevine](http://www.widevine.com) tags.



The library covered by BSD 3-clause license. See [LICENSE](LICENSE) for the full text.

Versions 0.8 and below was covered by GPL v3. License was changed from the version 0.9 and upper.



See the list of the library authors at [AUTHORS](AUTHORS) file.



Install

-------



	go get github.com/grafov/m3u8



or get releases from https://github.com/grafov/m3u8/releases



Documentation [![GoDoc](https://godoc.org/github.com/grafov/m3u8?status.svg)](https://pkg.go.dev/github.com/grafov/m3u8)

-------------



Package online documentation (examples included) available at:



* http://pkg.go.dev/github.com/grafov/m3u8



Supported by the HLS protocol tags and their library support explained in [M3U8 cheatsheet](M3U8.md).



Examples

--------



Parse playlist:



```go

	f, err := os.Open("playlist.m3u8")

	if err != nil {

		panic(err)

	}

	p, listType, err := m3u8.DecodeFrom(bufio.NewReader(f), true)

	if err != nil {

		panic(err)

	}

	switch listType {

	case m3u8.MEDIA:

		mediapl := p.(*m3u8.MediaPlaylist)

		fmt.Printf("%+v\n", mediapl)

	case m3u8.MASTER:

		masterpl := p.(*m3u8.MasterPlaylist)

		fmt.Printf("%+v\n", masterpl)

	}

```



Then you get filled with parsed data structures. For master playlists you get ``Master`` struct with slice consists of pointers to ``Variant`` structures (which represent playlists to each bitrate).

For media playlist parser returns ``MediaPlaylist`` structure with slice of ``Segments``. Each segment is of ``MediaSegment`` type.

See ``structure.go`` or full documentation (link below).



You may use API methods to fill structures or create them manually to generate playlists. Example of media playlist generation:



```go

	p, e := m3u8.NewMediaPlaylist(3, 10) // with window of size 3 and capacity 10

	if e != nil {

		panic(fmt.Sprintf("Creating of media playlist failed: %s", e))

	}

	for i := 0; i < 5; i++ {

		e = p.Append(fmt.Sprintf("test%d.ts", i), 6.0, "")

		if e != nil {

			panic(fmt.Sprintf("Add segment #%d to a media playlist failed: %s", i, e))

		}

	}

	fmt.Println(p.Encode().String())

```



Custom Tags

-----------



M3U8 supports parsing and writing of custom tags. You must implement both the `CustomTag` and `CustomDecoder` interface for each custom tag that may be encountered in the playlist. Look at the template files in `example/template/` for examples on parsing custom playlist and segment tags.



Library structure

-----------------



Library has compact code and bundled in three files:



* `structure.go` — declares all structures related to playlists and their properties

* `reader.go` — playlist parser methods

* `writer.go` — playlist generator methods



Each file has own test suite placed in `*_test.go` accordingly.



Related links

-------------



* http://en.wikipedia.org/wiki/M3U

* http://en.wikipedia.org/wiki/HTTP_Live_Streaming

* http://gonze.com/playlists/playlist-format-survey.html



Library usage

-------------



This library was successfully used in streaming software developed for company where I worked several

years ago. It was tested then in generating of VOD and Live streams and parsing of Widevine Live streams.

Also the library used in opensource software so you may look at these apps for usage examples:



* [HLS downloader](https://github.com/kz26/gohls)

* [Another HLS downloader](https://github.com/Makombo/hlsdownloader)

* [HLS utils](https://github.com/archsh/hls-utils)

* [M3U8 reader](https://github.com/jeongmin/m3u8-reader)



Project status [![Go Report Card](https://goreportcard.com/badge/grafov/m3u8)](https://goreportcard.com/report/grafov/m3u8)

--------------



[![Build Status](https://travis-ci.org/grafov/m3u8.png?branch=master)](https://travis-ci.org/grafov/m3u8) [![Build Status](https://cloud.drone.io/api/badges/grafov/m3u8/status.svg)](https://cloud.drone.io/grafov/m3u8) [![Coverage Status](https://coveralls.io/repos/github/grafov/m3u8/badge.svg?branch=master)](https://coveralls.io/github/grafov/m3u8?branch=master)



[![DeepSource](https://static.deepsource.io/deepsource-badge-light.svg)](https://deepsource.io/gh/grafov/m3u8/?ref=repository-badge)



Code coverage: https://gocover.io/github.com/grafov/m3u8



Project maintainers

--------------------



Thank to all people who contrubuted to the code and maintain

it. Especially thank to the maintainers who involved in the project

actively in the past and helped to keep code actual:



* Lei Gao @leikao

* Bradley Falzon @bradleyfalzon



New maitainers are welcome.



Alternatives

-------------



On the project start in 2013 there was no any other libs in Go for m3u8. Later the alternatives came. Some of them may be more fit current standards.



* https://github.com/hr8/rosso



Drop a link in issue if you know other projects.



FYI M3U8 parsing/generation in other languages

------------------------------------------



* https://github.com/globocom/m3u8 in Python

* https://github.com/zencoder/m3uzi in Ruby

* https://github.com/Jeanvf/M3U8Paser in Objective C

* https://github.com/tedconf/node-m3u8 in Javascript

* http://sourceforge.net/projects/m3u8parser/ in Java

* https://github.com/karlll/erlm3u8 in Erlang