[FFmpeg-trac] #4426(undetermined:new): RIFF WAVE 24-bit WAVE_FORMAT_PCM files are not properly supported

[FFmpeg]

#4426: RIFF WAVE 24-bit WAVE_FORMAT_PCM files are not properly supported
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             Reporter:  rsn10100     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  wav          |               Resolution:
  WAVEFORMATEX WAVE_FORMAT_PCM       |               Blocked By:
  output 24bit                       |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by heleppkes):

 WAVEFORMATEX is a Microsoft format, and they clearly define that bits per
 sample is only allowed to be 8 or 16 with WAVE_FORMAT_PCM, and only with
 WAVE_FORMAT_EXTENSIBLE higher bit depths are allowed. See
 https://msdn.microsoft.com/en-
 us/library/windows/desktop/dd390970(v=vs.85).aspx

 FFmpeg should not be creating out of spec files, even if some occasionally
 software can read it.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4426#comment:1>
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