[FFmpeg-devel] [PATCH] riff: don't overwrite bps from WAVEFORMATEX if EXTENSIBLE doesn't contain that data.

[Hendrik Leppkes]

Hi,

attached patch fixes playback of 24-bit wav files.
The WAVEFORMATEX structure already defines a bit per sample attribute, and
according to Microsofts documentation, the WAVEFORMATEXTENSIBLE extra
information is not required to duplicate that information, and should just
be ignored if 0.

Reference:
http://msdn.microsoft.com/en-us/library/windows/desktop/dd757714(v=vs.85).aspx

- Hendrik
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