[FFmpeg-trac] #5218(avfilter:new): asplit does not work for unknown channel layouts

[FFmpeg]

#5218: asplit does not work for unknown channel layouts
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avfilter
                Version:  git-       |               Keywords:  asplit
  master                             |  regression
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 http://thread.gmane.org/gmane.comp.video.ffmpeg.user/61019
 Unknown channel layouts used to work fine with asplit until
 d300f5f6f570659e4b58567b35c9e8600c9f2956
 {{{
 $ ffmpeg -loglevel 99 -f s16le -ac 10 -i /dev/zero -filter_complex
 asplit[a1][a2] -map [a1] -f null -t 1 - -map "[a2]" -f null -t 1 -
 ffmpeg version N-78307-gf89bc66 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --enable-libmp3lame
   libavutil      55. 17.100 / 55. 17.100
   libavcodec     57. 24.101 / 57. 24.101
   libavformat    57. 24.100 / 57. 24.100
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 28.100 /  6. 28.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Splitting the commandline.
 Reading option '-loglevel' ... matched as option 'loglevel' (set logging
 level) with argument '99'.
 Reading option '-f' ... matched as option 'f' (force format) with argument
 's16le'.
 Reading option '-ac' ... matched as option 'ac' (set number of audio
 channels) with argument '10'.
 Reading option '-i' ... matched as input file with argument '/dev/zero'.
 Reading option '-filter_complex' ... matched as option 'filter_complex'
 (create a complex filtergraph) with argument 'asplit[a1][a2]'.
 Reading option '-map' ... matched as option 'map' (set input stream
 mapping) with argument '[a1]'.
 Reading option '-f' ... matched as option 'f' (force format) with argument
 'null'.
 Reading option '-t' ... matched as option 't' (record or transcode
 "duration" seconds of audio/video) with argument '1'.
 Reading option '-' ... matched as output file.
 Reading option '-map' ... matched as option 'map' (set input stream
 mapping) with argument '[a2]'.
 Reading option '-f' ... matched as option 'f' (force format) with argument
 'null'.
 Reading option '-t' ... matched as option 't' (record or transcode
 "duration" seconds of audio/video) with argument '1'.
 Reading option '-' ... matched as output file.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option loglevel (set logging level) with argument 99.
 Applying option filter_complex (create a complex filtergraph) with
 argument asplit[a1][a2].
 Successfully parsed a group of options.
 Parsing a group of options: input file /dev/zero.
 Applying option f (force format) with argument s16le.
 Applying option ac (set number of audio channels) with argument 10.
 Successfully parsed a group of options.
 Opening an input file: /dev/zero.
 [file @ 0x2cde060] Setting default whitelist 'file'
 [s16le @ 0x2cdd7a0] Before avformat_find_stream_info() pos: 0 bytes
 read:32768 seeks:0
 [s16le @ 0x2cdd7a0] All info found
 [s16le @ 0x2cdd7a0] 0: start_time: -9223372036854.775 duration:
 -9223372036854.775
 [s16le @ 0x2cdd7a0] stream: start_time: -9223372036854.775 duration:
 -9223372036854.775 bitrate=7056 kb/s
 [s16le @ 0x2cdd7a0] After avformat_find_stream_info() pos: 1024000 bytes
 read:1048576 seeks:0 frames:50
 Input #0, s16le, from '/dev/zero':
   Duration: N/A, bitrate: 7056 kb/s
     Stream #0:0, 50, 1/44100: Audio: pcm_s16le, 44100 Hz, 10 channels,
 s16, 7056 kb/s
 Successfully opened the file.
 detected 8 logical cores
 Parsing a group of options: output file -.
 Applying option map (set input stream mapping) with argument [a1].
 Applying option f (force format) with argument null.
 Applying option t (record or transcode "duration" seconds of audio/video)
 with argument 1.
 Successfully parsed a group of options.
 Opening an output file: -.
 Successfully opened the file.
 Parsing a group of options: output file -.
 Applying option map (set input stream mapping) with argument [a2].
 Applying option f (force format) with argument null.
 Applying option t (record or transcode "duration" seconds of audio/video)
 with argument 1.
 Successfully parsed a group of options.
 Opening an output file: -.
 Successfully opened the file.
 [graph 0 input from stream 0:0 @ 0x2deaa20] Setting 'time_base' to value
 '1/44100'
 [graph 0 input from stream 0:0 @ 0x2deaa20] Setting 'sample_rate' to value
 '44100'
 [graph 0 input from stream 0:0 @ 0x2deaa20] Setting 'sample_fmt' to value
 's16'
 [graph 0 input from stream 0:0 @ 0x2deaa20] Setting 'channels' to value
 '10'
 [graph 0 input from stream 0:0 @ 0x2deaa20] tb:1/44100 samplefmt:s16
 samplerate:44100 chlayout:(null)
 [audio format for output stream 1:0 @ 0x2deb1c0] Setting 'sample_fmts' to
 value 's16'
 [audio format for output stream 0:0 @ 0x2dead60] Setting 'sample_fmts' to
 value 's16'
 [Parsed_asplit_0 @ 0x2dea4c0] auto-inserting filter 'auto-inserted
 resampler 0' between the filter 'graph 0 input from stream 0:0' and the
 filter 'Parsed_asplit_0'
 [AVFilterGraph @ 0x2de6cc0] query_formats: 8 queried, 19 merged, 3 already
 done, 0 delayed
 [auto-inserted resampler 0 @ 0x2dee540] Cannot select channel layout for
 the link between filters auto-inserted resampler 0 and Parsed_asplit_0.
 [auto-inserted resampler 0 @ 0x2dee540] Unknown channel layouts not
 supported, try specifying a channel layout using
 'aformat=channel_layouts=something'.
 Error configuring complex filters.
 Invalid argument
 [AVIOContext @ 0x2ce6320] Statistics: 1048576 bytes read, 0 seeks
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/5218>
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