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FFmpeg/tests/ref/fate/matroska-wavpack-missing-codecprivate
Andreas Rheinhardt 048bc3fe31 avformat/matroskadec: Add a workaround for missing WavPack extradata
mkvmerge versions 6.2 to 40.0 had a bug that made it not propagate the
WavPack extradata (containing the WavPack version) during remuxing from
a Matroska file; currently our demuxer would treat every WavPack block
encountered as invalid data (unless the WavPack stream is to be
discarded (i.e. the streams discard is >= AVDISCARD_ALL)) and try to
resync to the next level 1 element.

Luckily, the WavPack version is currently not really important; so we
fix this problem by assuming a version. David Bryant, the creator of
WavPack, recommended using version 0x410 (the most recent version) for
this. And this is what this commit does.

A FATE-test for this has been added.

Reviewed-by: David Bryant <david@wavpack.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-04-02 07:12:01 +02:00

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#extradata 0: 2, 0x00240014
#tb 0: 11337/500000000
#media_type 0: audio
#codec_id 0: wavpack
#sample_rate 0: 44100
#channel_layout 0: 3
#channel_layout_name 0: stereo
0, 0, 0, 22051, 14778, 0x02819286
0, 22051, 22051, 22052, 14756, 0x21976243