mpeg-4 als: "quant_cof 237 is out of range" with multichannel 16bit

[ami_stuff]

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%

[ami_stuff]

the same problem happens with multichannel 24bit and 32bit

[Rishabh Sethia]

Hi , I was looking through the same , but the output to me was different , On executing the ffmpeg command , it was showing that "Invalid data found when processing input". So , I suggest that there might be an error in input. Can you please elaborate on how you generated the bug ?

[Thilo Borgmann]

Complete, uncut console output missing (c).

Compare your command line with the one given above and double check your input data by requesting the correct MD5 or something like that from the author. It might also correspond to the version of your ffmpeg compared to the one the author used to report the bug.

[Elon Musk]

Fixed in c8853568b177b521a3ed0ec4e4246bc27be79250.

[H2Swine]

#11035 points out another "out of range" - this time a negative.
And with CDDA.

[H2Swine]

I wonder whether it is the ALS reference encoder that is buggy about certain WAVE files and then produces an invalid encode? Indeed it has just come up that yes it doesn't handle WAVE well: ​https://hydrogenaud.io/index.php/topic,109239.msg1045191.html#msg1045191

So that might be the reason that this 44100/16 stereo file doesn't work: ​https://www.sendspace.com/file/qg9j3u contains both the ALS encode and an original - as .tak to save space.