not able to override audio tracks for each media inside concatenating media source!!

[robindanielk]

Hi , i am trying to set different audio tracks for each media source inside concatenating media source .
Media source contain four audio tracks.
I have tried this on 2 cases:
As per the docs ->

 private PlayerEventListener(ExoPlayer mExoPlayer, DefaultTrackSelector trackSelector,
                                VideoResponse videoResponse, LinearLayout rootLayout, TextView nowPlaying,
                                Activity activity, boolean isAdd, CountdownView countdownView,long totalAddDuration) {
        this.mExoPlayer = mExoPlayer;
        this.trackSelector = trackSelector;
        videoFiles = videoResponse.getFiles();
     }

 @Override
    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
         Log.d(TAG, "++=================onTracksChanged=======================++ ");
        trackSelector.setParameters(trackSelector.buildUponParameters()
                .setPreferredAudioLanguage("tam"));
}

As per the demo ->

 @Override
    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
   MappingTrackSelector.MappedTrackInfo trackInfo = trackSelector.getCurrentMappedTrackInfo();
   TrackGroupArray audioTrackGroups = trackInfo.getTrackGroups(C.TRACK_TYPE_AUDIO);
    DefaultTrackSelector.SelectionOverride selectionOverride =  new 
                                 MappingTrackSelector.SelectionOverride(1, 0);
   DefaultTrackSelector.ParametersBuilder parametersBuilder = trackSelector.buildUponParameters();
   parametersBuilder.
                  setSelectionOverride(C.TRACK_TYPE_AUDIO,audioTrackGroups,selectionOverride);
   trackSelector.setParameters(parametersBuilder);
}

the trackInfo.getTrackGroups(C.TRACK_TYPE_AUDIO) is not getting all the audio track group..
Both the cases are not working for switching the audio tracks..Kindly help!

[ojw28]

Please can you provide reproduction steps, including sample media and details of exactly which of the tracks you're trying to select. The above information isn't sufficient to allow us to recreate what you're doing, or fully understand your problem.

[robindanielk]

@ojw28 Hi...since the sample media is available only locally i ll try to explain.

• I have created a concatenatingMediaSource.
• In one of the media sources inside concatenating media source, I want to change the audio track.
• The specific media source contains [(1)Video and (4)audio tracks (1)SubRip]
• So i am using OnTrackChangeListener event of the PlayerListener like both the below cases when next media sources are played,

From the Demo App

@Override
   public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
  MappingTrackSelector.MappedTrackInfo trackInfo = trackSelector.getCurrentMappedTrackInfo();
  
> TrackGroupArray audioTrackGroups = trackInfo.getTrackGroups(C.TRACK_TYPE_AUDIO);

   DefaultTrackSelector.SelectionOverride selectionOverride =  new 
                                MappingTrackSelector.SelectionOverride(1, 0);
  DefaultTrackSelector.ParametersBuilder parametersBuilder = trackSelector.buildUponParameters();
  parametersBuilder.
                 setSelectionOverride(C.TRACK_TYPE_AUDIO,audioTrackGroups,selectionOverride);
  trackSelector.setParameters(parametersBuilder);
}

and,

From Documentation

 @Override
    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
         Log.d(TAG, "++=================onTracksChanged=======================++ ");
        trackSelector.setParameters(trackSelector.buildUponParameters()
                .setPreferredAudioLanguage("tam"));
}

• I pass the defaultTrackSelector to playerEventListener like below,

private PlayerEventListener(ExoPlayer mExoPlayer, DefaultTrackSelector trackSelector,
                               VideoResponse videoResponse, LinearLayout rootLayout, TextView nowPlaying,
                               Activity activity, boolean isAdd, CountdownView countdownView,long totalAddDuration) {
       this.mExoPlayer = mExoPlayer;
       this.trackSelector = trackSelector;
       videoFiles = videoResponse.getFiles();
    }

• Problem is i am not able to override any of the audio tracks by the above methods.
• In Exoplayer Demo Application , audio tracks of the sample media could be changed!
• I noted that the all the audio tracks are not being retrieved from the below line
  TrackGroupArray audioTrackGroups = trackInfo.getTrackGroups(C.TRACK_TYPE_AUDIO); ,

In DemoApplication , audioTrackGroups shows 4 tracks
In MyApplication , audioTrackGroups shows only 1 track and that too it is a video track.
So I am not able to override the correct audio...I hope i have explained correctly..Kindly help !!

##Edit:
Media Info of the sample media!
issueGit.txt

From the sample media source EventLogger

 Renderer:1 [
08-22 11:26:01.363 21217-21217/com.example.ridsys_001.AsterTest D/EventLogger:     Group:0, adaptive_supported=N/A [
          [X] Track:0, id=1, mimeType=video/avc, res=1280x532, supported=YES
        ]
      ]
      Renderer:2 [
        Group:0, adaptive_supported=N/A [
          [X] Track:0, id=5, mimeType=audio/mp4a-latm, channels=2, sample_rate=24000, language=eng, supported=YES
        ]
      ]
      Renderer:3 [
        Group:0, adaptive_supported=N/A [
          [ ] Track:0, id=2, mimeType=audio/mpeg, channels=2, sample_rate=48000, language=tam, supported=YES
        ]
08-22 11:26:01.364 21217-21217/com.example.ridsys_001.AsterTest D/EventLogger:     Group:1, adaptive_supported=N/A [
          [ ] Track:0, id=3, mimeType=audio/mpeg, channels=2, sample_rate=48000, language=tel, supported=YES
        ]
        Group:2, adaptive_supported=N/A [
          [ ] Track:0, id=4, mimeType=audio/mpeg, channels=2, sample_rate=48000, language=hin, supported=YES
        ]
      ]
      Renderer:4 [
        Group:0, adaptive_supported=N/A [
          [X] Track:0, id=6, mimeType=application/x-subrip, language=eng, supported=YES
        ]
      ]
    ]

[ojw28]

From the Demo App

I don't think the demo app contains this code. Furthermore, this line looks wrong. You should be passing a renderer index, not a track type:

TrackGroupArray audioTrackGroups = trackInfo.getTrackGroups(C.TRACK_TYPE_AUDIO);

Please take a more careful look at exactly what the demo app is doing.

As an extra hint, I think the extra complexity in your case is that you're also using the Ffmpeg extension. If you look at the logging at the bottom of your post above, you can see there are two audio renderers (renderer 2 and renderer 3), and some of the audio tracks have been mapped to each of them. Hence to ensure the correct audio track gets selected using selection overrides, you'll probably have to set an override for both of them.

When using constraints (e.g. setPreferredAudioLanguage) I think there's a bug in our logic where we'll always prefer to use the first audio renderer, if at least one track is mapped to it. I've filed #4711 to track that issue.

[robindanielk]

@ojw28 .. Hi..thanks for the hint....Now instead of using EXTENSION_MODE_PREFER, i have changed the renderer extension to be alwaysEXTENSION_MODE_ON.
Now all the audio tracks are grouped under one renderer.
Will setting EXTENSION_MODE_ON as default cause any issues since i am using FFMPEG extension?..
Also i have used..

//returns correct index
int audioRendererIndex = mExoPlayer.getRendererType(C.TRACK_TYPE_AUDIO);

//not returning correct index
int subRendererIndex = mExoPlayer.getRendererType(C.TRACK_TYPE_TEXT);

the subtitleRender Index is returning a wrong index of 1

RendererLog:

      Renderer:0 [
08-23 11:13:27.117 20953-20953/com.example.ridsys_001.AsterTest D/EventLogger:     Group:0, adaptive_supported=N/A [
          [X] Track:0, id=1, mimeType=video/avc, res=1280x532, supported=YES
        ]
      ]
      Renderer:2 [
        Group:0, adaptive_supported=N/A [
          [ ] Track:0, id=2, mimeType=audio/mpeg, channels=2, sample_rate=48000, language=tam, supported=YES
        ]
        Group:1, adaptive_supported=N/A [
          [X] Track:0, id=3, mimeType=audio/mpeg, channels=2, sample_rate=48000, language=tel, supported=YES
        ]
        Group:2, adaptive_supported=N/A [
08-23 11:13:27.119 20953-20953/com.example.ridsys_001.AsterTest D/EventLogger:     Group:3, adaptive_supported=N/A [
          [ ] Track:0, id=5, mimeType=audio/mp4a-latm, channels=2, sample_rate=24000, language=eng, supported=YES
        ]
      ]
      Renderer:4 [
        Group:0, adaptive_supported=N/A [
          [X] Track:0, id=6, mimeType=application/x-subrip, language=eng, supported=YES
        ]
      ]
    ]

[ojw28]

Will setting EXTENSION_MODE_ON as default cause any issues since i am using FFMPEG extension?

I don't really understand the question. Why would you expect that it might?

As for the following:

//returns correct index
int audioRendererIndex = mExoPlayer.getRendererType(C.TRACK_TYPE_AUDIO);

//not returning correct index
int subRendererIndex = mExoPlayer.getRendererType(C.TRACK_TYPE_TEXT);

This is not correct code, so it's unsurprising that it doesn't work. getRendererType does not accept a type argument and does not return an index, so your usage is incorrect. Please consult the documentation for this method.