code: public void play(String uri) {
          tvInputPlayer.setSurface(mSurface);
          try {
              Log.d(TAG, "Play "+uri+"; "+uri.indexOf("asset:///"));
              if(uri.contains("asset:///")) {
                  Log.i(TAG, "Is a local file");
                  DataSource dataSource=new AssetDataSource(getApplicationContext());
                  ExtractorSampleSource extractorSampleSource=new ExtractorSampleSource(Uri.parse(uri),dataSource,new DefaultAllocator(1000),5000);
                  TrackRenderer audio=new MediaCodecAudioTrackRenderer(extractorSampleSource,null,null,true);
                  tvInputPlayer.prepare(audio, null, null);
              } else {
                  tvInputPlayer.prepare(getApplicationContext(), Uri.parse(uri), TvInputPlayer.SOURCE_TYPE_HLS);
              }
          } catch (Exception e) {
              e.printStackTrace();
          }
          tvInputPlayer.setPlayWhenReady(true);
  
      }
docs: Will load and begin to play any RTMP, HLS, or MPEG2-DASH stream
  Should also be able to play local videos and audio files
  @param uri The URL where the file resides