EOF exception comes while running DASH stream with TTML track

ExoPlayer Version

2.17.1

Devices that reproduce the issue

NVDIA shield with Android 11

Devices that do not reproduce the issue

Not tested any other

Reproducible in the demo app?

No

Reproduction steps

Play the mpd , enable track selection parameters to select the text for eng and also enable the undefined language too

Expected result

Media should play successfully

Actual result

When exo player receives the first ttml segment -{mentioned as d1-1.m4s - in the log }, Following error is getting . video is not playing after the first frame . The segment data d1-1.m4s is uloaded in the 'media ’ field below as ttmlDump_org.txt.

MPD is also uploaded in media (renamed as txt in the Media as the xml was not supported)

CM_HttpSendResponse(): Sending AV 1385 Segment Sent =[d1-1.m4s] 963 D NvOsDebugPrintf: NVMEDIA: FrameRate = 59 960 I ACodec : Get OMX_IndexConfigScale: 0x10000/0x10000 960 I ACodec : Scaled Width is 1920, height is 1080 859 E EventLogger: internalError [eventTime=3.74, mediaPos=0.00, window=0, period=0, loadError 859 E EventLogger: java.io.EOFException 859 E EventLogger: at com.google.android.exoplayer2.extractor.DefaultExtractorInput.readFromUpstream(DefaultExtractorInput.java:296) 859 E EventLogger: at com.google.android.exoplayer2.extractor.DefaultExtractorInput.skipFully(DefaultExtractorInput.java:107) 859 E EventLogger: at com.google.android.exoplayer2.extractor.DefaultExtractorInput.skipFully(DefaultExtractorInput.java:115) 859 E EventLogger: at com.google.android.exoplayer2.extractor.mp4.FragmentedMp4Extractor.readAtomPayload(FragmentedMp4Extractor.java:457 859 E EventLogger: at com.google.android.exoplayer2.extractor.mp4.FragmentedMp4Extractor.read(FragmentedMp4Extractor.java:336) 859 E EventLogger: at com.google.android.exoplayer2.source.chunk.BundledChunkExtractor.read(BundledChunkExtractor.java:153) 859 E EventLogger: at com.google.android.exoplayer2.source.chunk.ContainerMediaChunk.load(ContainerMediaChunk.java:127) 859 E EventLogger: at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:412) 859 E EventLogger: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 859 E EventLogger: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 859 E EventLogger: at java.lang.Thread.run(Thread.java:923) 859 E EventLogger: ]

Media

ttmlDump_org.txt mpd.txt

Bug Report

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[icbaker]

Thanks for the content, I was able to play it in our demo app by doing two things:

1. Change the device time to 2021-06-09 21:06 UTC
2. Hack DashMediaSource to stop it from using an NTP-based time source and use local device time by changing this line: https://github.com/google/ExoPlayer/blob/ab4d37f499ba49bb3cac7938eb03ebf7133ccfe6/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java#L761-L763

To this:

public void onInitialized() {
  onUtcTimestampResolved(System.currentTimeMillis() - SystemClock.elapsedRealtime());
}

I enabled the subtitle track while the content was playing, and saw subtitles appear on the screen.

So it looks like everything is working for me. If you make the same changes to the demo app, do you also see the subtitles?

[icbaker]

If you’re trying to play live content long after it’s aired it should probably be served as VOD content instead? The intricacies of content preparation is out of scope for this issue tracker, but that is generally how I would expect ‘no longer live’ content to be served.

(I thought you were only trying to override the time in order to test some live behaviour to reliably repro this issue - using actually-live streams for repro can be annoying because they keep changing!)