[FFmpeg-trac] #10580(undetermined:new): alac enc: "channel layout change is not supported" with mono file

[FFmpeg]

#10580: alac enc: "channel layout change is not supported" with mono file
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------
 this does not happen with "-acodec wavpack" or "-acodec flac"

 https://trac.ffmpeg.org/raw-
 attachment/ticket/10547/20_bit_fixed_96k_mono.osq

 {{{
 ./ffmpeg -i 20_bit_fixed_96k_mono.osq -y -acodec alac out.mkv
 ffmpeg version N-112164-gcb26b85953 Copyright (c) 2000-2023 the FFmpeg
 developers
   built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
   configuration:
   libavutil      58. 25.100 / 58. 25.100
   libavcodec     60. 27.100 / 60. 27.100
   libavformat    60. 13.100 / 60. 13.100
   libavdevice    60.  2.101 / 60.  2.101
   libavfilter     9. 11.100 /  9. 11.100
   libswscale      7.  3.100 /  7.  3.100
   libswresample   4. 11.100 /  4. 11.100
 [aist#0:0/osq @ 0x55d744704bc0] Guessed Channel Layout: mono
 Input #0, osq, from '20_bit_fixed_96k_mono.osq':
   Duration: 00:00:06.76, start: 0.000000, bitrate: 1617 kb/s
   Stream #0:0: Audio: osq, 96000 Hz, 1 channels, s32p (20 bit)
 Stream mapping:
   Stream #0:0 -> #0:0 (osq (native) -> alac (native))
 Press [q] to stop, [?] for help
 [Parsed_anull_0 @ 0x55d744707e00] Channel layout change is not supported
 [af#0:0 @ 0x55d744703e40] Error while filtering: Not yet implemented in
 FFmpeg, patches welcome
 Failed to inject frame into filter network: Not yet implemented in FFmpeg,
 patches welcome
 Error while filtering: Not yet implemented in FFmpeg, patches welcome
 [out#0/matroska @ 0x55d744705100] Nothing was written into output file,
 because at least one of its streams received no packets.
 size=       0kB time=N/A bitrate=N/A speed=N/A
 Conversion failed!
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10580>
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