[FFmpeg-trac] #5942(undetermined:new): mpeg-4 als: "quant_cof 237 is out of range" with multichannel 16bit

[FFmpeg]

#5942: mpeg-4 als: "quant_cof 237 is out of range" with multichannel 16bit
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 no such problem with mono/stereo files

 encoded with:

 {{{
 C:\>mp4alsRM23.exe -7 -MP4 D:\16multi.wav
 }}}


 {{{
 C:\>ffmpeg -i D:\16multi.mp4  D:\out.wav
 ffmpeg version N-78758-g5156578 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.3.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-
 libcaca --
 enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm
 --enable-l
 ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enab
 le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
 librtmp --en
 able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
 --ena
 ble-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-
 libvorbis --
 enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
 --enable-lib
 x265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma
 --enable-d
 ecklink --enable-zlib
   libavutil      55. 19.100 / 55. 19.100
   libavcodec     57. 27.100 / 57. 27.100
   libavformat    57. 26.100 / 57. 26.100
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 37.100 /  6. 37.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Guessed Channel Layout for  Input Stream #0.0 : 5.1
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\16multi.mp4':
   Metadata:
     major_brand     : mp42
     minor_version   : 0
     compatible_brands: mp42isom
     creation_time   : 2016-11-11 17:28:53
   Duration: 00:00:05.00, start: 0.000000, bitrate: 1220 kb/s
     Stream #0:0(und): Audio: mp4als (mp4a / 0x6134706D), 48000 Hz, 6
 channels, s
 16, 1219 kb/s (default)
     Metadata:
       creation_time   : 2016-11-11 17:28:53
 Output #0, wav, to 'D:\out.wav':
   Metadata:
     major_brand     : mp42
     minor_version   : 0
     compatible_brands: mp42isom
     ISFT            : Lavf57.26.100
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
 5.1, s
 16, 4608 kb/s (default)
     Metadata:
       creation_time   : 2016-11-11 17:28:53
       encoder         : Lavc57.27.100 pcm_s16le
 Stream mapping:
   Stream #0:0 -> #0:0 (mp4als (als) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [als @ 038f0d60] quant_cof 237 is out of range.
 [als @ 038f0d60] Reading frame data failed. Skipping RA unit.
 size=     720kB time=00:00:01.28 bitrate=4608.6kbits/s speed=N/A
 video:0kB audio:720kB subtitle:0kB other streams:0kB global headers:0kB
 muxing o
 verhead: 0.013835%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5942>
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