[FFmpeg-trac] #10201(undetermined:new): wav: fix decoding of 16-bit RIFX

[FFmpeg]

#10201: wav: fix decoding of 16-bit RIFX
-------------------------------------+-------------------------------------
             Reporter:  ami_stuff    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 support for RIFX WAV format has been added in
 00d7555f3468193a761c0534df6742646b15829c (ticket #1978), but attached
 16-bit RIFX file created with SoX decodes only to noise

 Audacity for example is able to decode it correctly.

 FFmpeg should either decode 16-bit RIFX files correctly or reject them.

 24-bit and 32-bit RIFX files created with SoX doesn't decode at all with
 FFmpeg because of:

 {{{
 [wav @ 0x7fe8b0000cc0] WAVEFORMATEX support for RIFX files is not
 implemented.
 Update your FFmpeg version to the newest one from Git. If the problem
 still occurs,
 it means that your file has a feature which has not been implemented.
 }}}

 {{{
 ./ffmpeg -i 16bit_rifx.wav -y out.wav
 ffmpeg version N-109867-g5247dab6b1 Copyright (c) 2000-2023 the FFmpeg
 developers
   built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
   configuration:
   libavutil      58.  1.100 / 58.  1.100
   libavcodec     60.  2.100 / 60.  2.100
   libavformat    60.  2.100 / 60.  2.100
   libavdevice    60.  0.100 / 60.  0.100
   libavfilter     9.  1.100 /  9.  1.100
   libswscale      7.  0.100 /  7.  0.100
   libswresample   4.  9.100 /  4.  9.100
 Guessed Channel Layout for Input Stream #0.0 : mono
 Input #0, wav, from '16bit_rifx.wav':
   Duration: 00:00:10.00, bitrate: 533 kb/s
   Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 33333 Hz, 1
 channels, s16, 533 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'out.wav':
   Metadata:
     ISFT            : Lavf60.2.100
   Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 33333 Hz, mono,
 s16, 533 kb/s
     Metadata:
       encoder         : Lavc60.2.100 pcm_s16le
 size=     651kB time=00:00:09.95 bitrate= 535.9kbits/s speed=1.67e+03x
 video:0kB audio:651kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.011700%
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10201>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker