getAvailableTracks() returning empty TrackGroupArray for RendererType VIDEO, even when tracks exist.

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Include the following:

• ExoMedia version: 4.1.0
• Device OS version: 4.4
• Devide Manufacturer: HTC
• Device Name: Desire 526G Plus

Reproduction Steps

1. I have set videoView uri as -

   videoView.setVideoURI(Uri.parse(url), new DashMediaSourceBuilder().build(context, Uri.parse
           (url), "some random string", null, null));  
   

2. Then, in onPrepared, I do this -

    if (videoView.trackSelectionAvailable()) {
   
        Map<ExoMedia.RendererType, TrackGroupArray> tracks = videoView.getAvailableTracks();
   
        Log.e("tracks", " are " + tracks);
   
        for (ExoMedia.RendererType rendererType : tracks.keySet()) {
   
            TrackGroupArray trackGroupArray = tracks.get(rendererType);
   
            Log.e("Renderer", " is " + rendererType);
            Log.e("Length", " is " + trackGroupArray.length);
   
            for (int i = 0; i < trackGroupArray.length; i++) {
                Log.e("Track " + rendererType.toString() + " " + i, "is " + trackGroupArray
                        .get(i).toString());
            }
        }
    }
   

Expected Result

I open the mpd link in an xml viewer and find this, among other things -

Meaning, that there are 5 video tracks.

Actual Result

…E/tracks: are {CLOSED_CAPTION=com.google.android.exoplayer2.source.TrackGroupArray@1, AUDIO=com.google.android.exoplayer2.source.TrackGroupArray@4496699e, VIDEO=com.google.android.exoplayer2.source.TrackGroupArray@1} …E/Renderer: is CLOSED_CAPTION …E/Length: is 0 …E/Renderer: is AUDIO …E/Length: is 1 …E/Track AUDIO 0: is com.google.android.exoplayer2.source.TrackGroup@4496697f …E/Renderer: is VIDEO …E/Length: is 0

Why is the getAvailableTracks() method returning an array size of 0 for RendererType VIDEO and not able to find the video tracks?

Also, I think you should mention in the docs that one should only call getAvailableTracks() after onPrepared, else it will cause an NPE.

[brianwernick]

See #541. You’ll need to update your version to 4.2.0

[brianwernick]

I’ve added a new method setTrack(RenderType, int, int) that correctly allows you to specify the group index in the TrackGroupArray. If you use the old setTrack(RenderType, int) method it will default to 0 for the group index which might not be what you want.