DASH + AC3 audio support appears unsupported about exoplayer HOT 7 CLOSED

I'm not sure, but my guess would be that it's purely a parsing limitation (which should make it trivial to fix). Do you have any test content at all? If not I'll have a dig around for some at some point.

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Thanks for responding. I've tried to put together enough to show you the parsing issue. I've included the MPD as well as a number of audio/video segments. You should be able to grab them from https://dl.dropboxusercontent.com/u/17365987/AC3.zip

I'm pretty sure my MPD is not technically correct, because it's stating the audio codec is "mp4a.40.2". However, this appears ignored and the issue occurs while reading the audio/initial.mp4 where the childAtomType of the STSD is "ac-3" (1633889587). Please let me know if you need anything else.

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@ojw28 - Have you had any more time to look into this?

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I don't think we have anything more to say about AC3 at this point in time.

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@ojw28 Did you mean to close this issue?

I've been looking into this, and have made a few local changes... I've managed to have ExoPlayer find the AC3 MediaCodec. The problem I have is that when attempting to configure it, a native error occurs (Error: 0x80001001). The MediaFormat i'm specifying 'looks' ok, but I haven't been able to build the initializationData because I have no idea what it's meant to be :) Is there any documentation on what the MediaCodec is expecting?

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Looking at the code a bit more, I see that initializationData isn't even used...

  protected void configureCodec(MediaCodec codec, android.media.MediaFormat x, MediaCrypto crypto) {
    codec.configure(x, null, crypto, 0);
  }

Will eventually build the key/value map from the MediaFormat before calling: native_configure(keys, values, surface, crypto, flags);

This means that the only things which affect the configuration of the codec are:

• Channel Count (6)
• Max input size (7938)
• MIME (audio/ac3)
• Sample Rate (44100)
• MediaCrypto (null, since no DRM is applied)

All of these inputs appear valid, so not sure why it fails to configure.

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Looks like two things are wrong here...

• Max input size is not correct
• Initialization data would be passed to the MediaCodec, if I can specify a suitable initializationData

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