React Native — Android ExoPlayer — Flac Support

2 min readNov 19, 2020

I wanted to use react-native-track-player to play song in my app.

But unfortunately, it doesn’t come with support for Flac extension.

10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal: com.google.android.exoplayer2.source.UnrecognizedInputFormatException: None of the available extractors (MatroskaExtractor, FragmentedMp4Extractor, Mp4Extractor, Mp3Extractor, AdtsExtractor, Ac3Extractor, TsExtractor, FlvExtractor, OggExtractor, PsExtractor, WavExtractor, AmrExtractor, Ac4Extractor) could read the stream.
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractorHolder.selectExtractor(ProgressiveMediaPeriod.java:1059)
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:947)
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:381)
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at java.util.concurrent.ThreadPoolExecutor.processTask(ThreadPoolExecutor.java:1187)
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
10-10 09:13:50.985 28050 28290 E ExoPlayerImplInternal:         at java.lang.Thread.run(Thread.java:784)

I tried…

So I add to the try to compile another ExoPlayer with this kind of support. (Doc here and then here)

BUT

I can’t get through…

Always getting this error

No virtual method getData()[B in class Lcom/google/android/exoplayer2/util/ParsableByteArray; or its super classes (declaration of 'com.google.android.exoplayer2.util.ParsableByteArray' appears in /data/app/com.chronozik-VQVtUzWN-Z6QsHIPa0P3fw==/base.apk!classes2.dex)

(Yes, I know we can see the name of my app in this log have a look)

I tried with several extensions for ExoPlayer like flac, ffmep, … Still the same error.

I almost gave up.

And finally, 3 months latter

With the new Readme in ExoPlayer Github, a new hope arrive.

I saw on bintray that Exoplayer could come with another extractor.

So I changed

# root build.gradle

allprojects {
    repositories {
        # Your repositories
       
        google()
        jcenter()    }
}

And

# app/build.gradle

dependencies {
    # Your dependencies
    // Add Audio Support
    implementation 'com.google.android.exoplayer:exoplayer-ui:2.12.1'
    implementation 'com.google.android.exoplayer:exoplayer-extractor:2.12.1'}

And finally it worked !

Conclusion

I won’t say, never give up because I did gave up for ~3 months. So I’ll say know the things that you give up and from time to time come back again with new acknowledge and try again !

(I still don’t know why I haven’t been able to install ExoPlayer extension so if anyone had any success in it please share)

React Native — Android ExoPlayer — Flac Support

I tried…

And finally, 3 months latter

Conclusion

Written by Clement Pont