[FFmpeg-trac] #7487(undetermined:new): -out_channel_layout and -ac don't work in AutioToolBox encoder

[FFmpeg]

#7487: -out_channel_layout and -ac don't work in AutioToolBox encoder
-------------------------------------+-------------------------------------
             Reporter:  Nock         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by Nock):

 This works, too.
 {{{
 ffmpeg -f lavfi -i anullsrc=cl=octagonal -c:a aac_at -af
 aresample=out_channel_layout=stereo -f null -
 ffmpeg version N-92132-g0a41a8bf29 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with Apple LLVM version 10.0.0 (clang-1000.11.45.2)
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-
 amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus
 --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora
 --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp
 --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg
 --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-
 libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex
 --enable-libxvid --enable-libaom --enable-appkit --enable-avfoundation
 --enable-coreimage --enable-audiotoolbox
   libavutil      56. 19.101 / 56. 19.101
   libavcodec     58. 32.100 / 58. 32.100
   libavformat    58. 18.104 / 58. 18.104
   libavdevice    58.  4.105 / 58.  4.105
   libavfilter     7. 33.100 /  7. 33.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 Input #0, lavfi, from 'anullsrc=cl=octagonal':
   Duration: N/A, start: 0.000000, bitrate: 2822 kb/s
     Stream #0:0: Audio: pcm_u8, 44100 Hz, octagonal, u8, 2822 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_u8 (native) -> aac (aac_at))
 Press [q] to stop, [?] for help
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf58.18.104
     Stream #0:0: Audio: aac (aac_at), 44100 Hz, stereo, u8, 128 kb/s
     Metadata:
       encoder         : Lavc58.32.100 aac_at
 size=N/A time=01:07:40.19 bitrate=N/A speed= 224x
 video:0kB audio:63441kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown}}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7487#comment:1>
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