[FFmpeg-trac] #10026(ffplay:new): ffplay doesn't play audio on file with 12 audio channels

[FFmpeg]

#10026: ffplay doesn't play audio on file with 12 audio channels
---------------------------------+----------------------------------
             Reporter:  diogo.r  |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  ffplay   |                  Version:  5.1.2
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+----------------------------------
 Summary of the bug:
 When playing this 12 audio channel file, ffplay doesn't play audio and
 prints a message that seems to indicate undefined behavior (weird
 characters, different each time).

 How to reproduce:

 {{{
 % ffplay.exe .\12-audio-channels.mkv
 ffplay version 5.1-essentials_build-www.gyan.dev Copyright (c) 2003-2022
 the FFmpeg developers
   built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 w32threads --disable-autodetect --enable-fontconfig --enable-iconv
 --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-zlib
 --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth
 --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-
 libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-
 libass --enable-libfreetype --enable-libfribidi --enable-libvidstab
 --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm
 --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-
 d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt
 --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora
 --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb
 --enable-libopus --enable-libspeex --enable-libvorbis --enable-
 librubberband
   libavutil      57. 28.100 / 57. 28.100
   libavcodec     59. 37.100 / 59. 37.100
   libavformat    59. 27.100 / 59. 27.100
   libavdevice    59.  7.100 / 59.  7.100
   libavfilter     8. 44.100 /  8. 44.100
   libswscale      6.  7.100 /  6.  7.100
   libswresample   4.  7.100 /  4.  7.100
   libpostproc    56.  6.100 / 56.  6.100
 Input #0, matroska,webm, from '.\12-audio-channels.mkv': 0B f=0/0
   Metadata:
     COMPATIBLE_BRANDS: mp42isomavc1
     MAJOR_BRAND     : mp42
     MINOR_VERSION   : 0
     ENCODER         : Lavf59.27.100
   Duration: 00:00:05.57, start: 0.000000, bitrate: 13983 kb/s
   Stream #0:0: Audio: pcm_s24le, 48000 Hz, 12 channels, s32 (24 bit),
 13824 kb/s
     Metadata:
       ENCODER         : Lavc59.37.100 pcm_s24le
       DURATION        : 00:00:05.568000000
   Stream #0:1: Video: h264 (High), yuv420p(tv, bt709, progressive),
 560x320, 30 fps, 30 tbr, 1k tbn (default)
     Metadata:
       VENDOR_ID       : [0][0][0][0]
       ENCODER         : Lavc59.37.100 libx264
       DURATION        : 00:00:05.533000000
 SDL_OpenAudio (12 channels, 48000 Hz): Unsupported number of audio
 channels.
 [SWR @ 0000023e85d75640] Rematrix is needed between 12 channels and  Vׅ>?
 but there is not enough information to do it
 Cannot create sample rate converter for conversion of 48000 Hz s16 12
 channels to 48000 Hz s16 2 channels!
 [SWR @ 0000023e85d75640] Rematrix is needed between 12 channels and  Vׅ>?
 but there is not enough information to do it
 Cannot create sample rate converter for conversion of 48000 Hz s16 12
 channels to 48000 Hz s16 2 channels!
 [SWR @ 0000023e85d75640] Rematrix is needed between 12 channels and  Vׅ>?
 but there is not enough information to do it
 Cannot create sample rate converter for conversion of 48000 Hz s16 12
 channels to 48000 Hz s16 2 channels!
 [...]
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10026>
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