Support m3u playlists

👋 hi, i have the following .m3u playlist file

#EXTM3U
#EXTINF:-1,livestream1
http://foo.com/live/1.ts

when i try to stream it with the following

Uri uri = Uri.parse("http://foo.com/playlist.m3u");
DefaultHttpDataSourceFactory httpDataSourceFactory = new DefaultHttpDataSourceFactory(Util.getUserAgent(this, "test"));
DefaultHlsDataSourceFactory hlsDataSourceFactory = new DefaultHlsDataSourceFactory(httpDataSourceFactory);
HlsMediaSource hlsMediaSource = new HlsMediaSource.Factory(hlsDataSourceFactory).createMediaSource(uri);
player.prepare(hlsMediaSource);

i get the following error which mean the failing happened on the streams with #EXTINF:-1 (aka. the live stream ones which don’t specify a duration time but -1 instead)

E/ExoPlayerImplInternal: Source error.
com.google.android.exoplayer2.ParserException: Couldn't match #EXTINF:([\d\.]+)\b in #EXTINF:-1,livestream1
    at com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser.parseStringAttr(HlsPlaylistParser.java:538)
    at com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser.parseDoubleAttr(HlsPlaylistParser.java:525)
    at com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser.parseMediaPlaylist(HlsPlaylistParser.java:407)
    at com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser.parse(HlsPlaylistParser.java:167)
    at com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser.parse(HlsPlaylistParser.java:48)
    at com.google.android.exoplayer2.upstream.ParsingLoadable.load(ParsingLoadable.java:130)
    at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:308)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    at java.lang.Thread.run(Thread.java:818)

how can i support an m3u live streams list if HlsPlaylistParser dont allow -1 as duration then

am using version 2.7.2

PS : i replaced the uri’s in the example above but it’s the same.

thanx in advance ❤

Issue Analytics

State:
Created 5 years ago
Comments:10 (3 by maintainers)

Top GitHub Comments

5reactions

ojw28commented, Apr 2, 2018

We do not support m3u playlists (which are not the same as m3u8 HLS playlists). Marking as an enhancement.

1reaction

ChenglongMacommented, Mar 9, 2021

The issue here is that the regex used in HlsPlaylistParser does not support #EXTINF:-1. So I copied the source code of HlsPlaylistParser and changed its regex pattern from :([\d\.]+)\b to :(-?[\d\.]+)\b (simply add -? after :(;

More trivially, my changelog:

Line [166] (may also [168]):

private static final Pattern REGEX_MEDIA_DURATION = Pattern.compile(TAG_MEDIA_DURATION
      + ":(-?[\\d\\.]+)\\b"); // prev version: :([\d\.]+)\b

Line [742]:

segmentDurationUs =
            (long) (parseDoubleAttr(line, REGEX_MEDIA_DURATION) * C.MICROS_PER_SECOND);

add a new line to make sure segmentDurationUs is greater than 0 (IMPORTANT!!):

segmentDurationUs = max(segmentDurationUs, 1)

How to use it:

Suppose your new variation of HlsPlaylistParser is called MyPlaylistParser; Implement a HlsPlaylistParserFactory based on the default class DefaultHlsPlaylistParserFactory, let’s call it MyPlaylistParserFactory;

(Mine is kotlin version):

class MyPlaylistParserFactory : HlsPlaylistParserFactory {
    override fun createPlaylistParser(): ParsingLoadable.Parser<HlsPlaylist> {
        return MyPlaylistParser()
    }

    override fun createPlaylistParser(
        masterPlaylist: HlsMasterPlaylist,
        previousMediaPlaylist: HlsMediaPlaylist?
    ): ParsingLoadable.Parser<HlsPlaylist> {
        return MyPlaylistParser(masterPlaylist, previousMediaPlaylist)
    }
}

Then create a HlsMediaSource like:

val item = MediaItem.Builder()
            .setMimeType(MimeTypes.APPLICATION_M3U8) // optional
            .setUri(uri)

val hlsMediaSource = HlsMediaSource.Factory(DefaultHttpDataSource.Factory())
            .setPlaylistParserFactory(MyPlaylistParserFactory()) // This is your implementation
            .createMediaSource(item.build())

exoPlayer.setMediaSource(hlsMediaSource)
exoPlayer.prepare()
exoPlayer.playWhenReady = true

Done. Hope this helps 😃