it didn't work after I compiled the ffmpeg extension and depend on it

[danyangwu]

Issue description

I followed the instructions (https://github.com/google/ExoPlayer/tree/release-v2/extensions/ffmpeg) , compiled the FFMPEG extension, depend on it(https://github.com/google/ExoPlayer#locally), setting the extensionRendererMode parameter of the DefaultRenderersFactory constructor to EXTENSION_RENDERER_MODE_ON, and build my demo project. But it didn't work when I tried to play an avi video.

Here is the error log:

11-29 00:46:03.787 E: onPlayerError:
com.google.android.exoplayer2.ExoPlaybackException
at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:349)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:164)
at android.os.HandlerThread.run(HandlerThread.java:65)
Caused by: com.google.android.exoplayer2.source.UnrecognizedInputFormatException: None of the available extractors (MatroskaExtractor, FragmentedMp4Extractor, Mp4Extractor, Mp3Extractor, AdtsExtractor, Ac3Extractor, TsExtractor, FlvExtractor, OggExtractor, PsExtractor, WavExtractor, AmrExtractor) could read the stream.
at com.google.android.exoplayer2.source.ExtractorMediaPeriod$ExtractorHolder.selectExtractor(ExtractorMediaPeriod.java:931)
at com.google.android.exoplayer2.source.ExtractorMediaPeriod$ExtractingLoadable.load(ExtractorMediaPeriod.java:853)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)

I have try this too. #4048 (comment)

I set a breakpoint in FfmpegLibrary.isAvailable and it returns true.
And I set a breakpoint at the start of FfmpegAudioRenderer.supportsFormatInternal and find out this method has never been execute.

Reproduction steps

I set a breakpoint in FfmpegLibrary.isAvailable and it returns true.
And I set a breakpoint at the start of FfmpegAudioRenderer.supportsFormatInternal and find out this method has never been execute.

Link to test content

any avi video can reproduce.

Version of ExoPlayer being used

my build.gradle:
compile 'com.google.android.exoplayer:exoplayer:2.8.0'
compile project(':exoplayer-extension-ffmpeg') //2.91

Device(s) and version(s) of Android being used

Device : any devices
Android Version : 8.1.0

[andrewlewis]

The extension can add support for decoding audio data encoded using various codecs, but it doesn't provide extractors for container formats like AVI I'm afraid.

[danyangwu]

What should I do to support decoding AVI?

[andrewlewis]

#2092 tracks this but it's (currently) low priority.