The video blocked when audio stop(The duration of audio track is less than video)?

[friskyliu]

I played a video(mp4 format), the audio track duration is 6 seconds and the video duration is 40 seconds. When it is played to 6 seconds, the video will be blocked。

[icbaker]

Please provide complete information as requested in the issue template. The issue template can be found here. If you're unable to share bug reports or test content publicly, please send them to dev.exoplayer@gmail.com using a subject "Issue #7943". Please also update this issue to indicate you’ve done this.

To debug this we certainly need:

• Sample media that demonstrates the problem
• The version of ExoPlayer and Android used

[friskyliu]

[ https://github.com/friskyliu/exoplayerbug7943.git ] is the demo for Issue #7943

Exoplayer version：2.12.0
Android version: Android 9.0

[icbaker]

Thanks for the app link - I can repro the behaviour you describe when running your app.

However when playing the same media in the demo app at 2.12.0 it plays to the end of the video (i.e. I don't see the behaviour you describe).

So it looks like it's something about the way your app is integrating ExoPlayer. I had a scan through the code and spotted these possible culprits:

• player.setRepeatMode(Player.REPEAT_MODE_ONE): Changed the demo app to do this - didn't cause problems.
• player.setSeekParameters(SeekParameters.EXACT): Changed the demo app to do this - didn't cause problems.

Passing this over to @andrewlewis to take a look.

[friskyliu]

It seems the code setLoadControl caused the problem. After delete LoadControl, it plays to the end.

Is the params wrong when using LoadControl?

        this.exoPlayer = new SimpleExoPlayer.Builder(context)
            .setTrackSelector(trackSelector)
    //        .setLoadControl(loadControl)   
            .setClock(Clock.DEFAULT)
            .build();

[icbaker]

Ah good find. I tried swapping in some different values for MAX_BUFFER_MS in your app. I found:

• 50_000 allowed the video to play to completion reliably
• 15_000 allowed it to play a few times, but it would eventually get stuck

I was able to repro in the demo app by including your LoadControl and the repeat mode (it didn't repro without the repeat mode):

player =
    new SimpleExoPlayer.Builder(/* context= */ this, renderersFactory)
        .setMediaSourceFactory(mediaSourceFactory)
        .setTrackSelector(trackSelector)
        .setLoadControl(
            new DefaultLoadControl.Builder()
                .setBufferDurationsMs(
                    /* minBufferMs= */ 5_000,
                    /* maxBufferMs= */ 10_000,
                    /* bufferForPlaybackMs= */ 1500,
                    /* bufferForPlaybackAfterRebufferMs= */ 3500)
                .build())
        .build();
player.setRepeatMode(Player.REPEAT_MODE_ONE);

cc @tonihei who might also have some thoughts

[tonihei]

Thanks for all the reproduction details - it looks as if this is a bug that got introduced as part of 652c2f9. We'll provide a fix for that.