[FFmpeg-trac] #10029(undetermined:new): avc audio quality regression

[FFmpeg]

#10029: avc audio quality regression
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------
 decodes much better with 4.2.7

 {{{
 ./ffmpeg_g -i 32khz_mono_56kbps.avi out3.wav
 ffmpeg version N-109064-gc124981b79 Copyright (c) 2000-2022 the FFmpeg
 developers
   built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
   configuration:
   libavutil      57. 42.100 / 57. 42.100
   libavcodec     59. 52.101 / 59. 52.101
   libavformat    59. 34.101 / 59. 34.101
   libavdevice    59.  8.101 / 59.  8.101
   libavfilter     8. 50.100 /  8. 50.100
   libswscale      6.  8.112 /  6.  8.112
   libswresample   4.  9.100 /  4.  9.100
 Input #0, avi, from '32khz_mono_56kbps.avi':
   Duration: 00:00:30.08, start: 0.000000, bitrate: 212 kb/s
   Stream #0:0: Video: msvideo1 (MSVC / 0x4356534D), rgb555le, 320x240, 144
 kb/s, 25 fps, 25 tbr, 25 tbn
   Stream #0:1: Audio: avc ([1][5][0][0] / 0x0501), 32000 Hz, mono, fltp,
 56 kb/s
 Stream mapping:
   Stream #0:1 -> #0:0 (avc (on2avc) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'out3.wav':
   Metadata:
     ISFT            : Lavf59.34.101
   Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 32000 Hz, mono,
 s16, 512 kb/s
     Metadata:
       encoder         : Lavc59.52.101 pcm_s16le
 size=    1876kB time=00:00:29.98 bitrate= 512.6kbits/s speed= 947x
 video:0kB audio:1876kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004060%
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10029>
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