[FFmpeg-trac] #4553(avcodec:new): Support G.729 stereo files

[FFmpeg]

#4553: Support G.729 stereo files
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               Reporter:  cehoyos      |                  Owner:
                   Type:  enhancement  |                 Status:  new
               Priority:  wish         |              Component:  avcodec
                Version:  git-master   |               Keywords:  g729
             Blocked By:               |               Blocking:
Reproduced by developer:  0            |  Analyzed by developer:  0
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 http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/193145
 A user uploaded a stereo G.729 file that is currently unsupported.
 {{{
 $ ffmpeg -i g729stereo.wav
 ffmpeg version N-72081-gec38a1b Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      54. 23.101 / 54. 23.101
   libavcodec     56. 38.101 / 56. 38.101
   libavformat    56. 33.101 / 56. 33.101
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 16.101 /  5. 16.101
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 [g729 @ 0x2897e80] Only mono sound is supported (requested channels: 2).
 [wav @ 0x2897460] Failed to open codec in av_find_stream_info
 [g729 @ 0x2897e80] Only mono sound is supported (requested channels: 2).
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, wav, from 'g729stereo.wav':
   Duration: 00:00:14.14, bitrate: 8 kb/s
     Stream #0:0: Audio: g729 ([131][0][0][0] / 0x0083), 8000 Hz, 2
 channels, 16 kb/s
 At least one output file must be specified
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/4553>
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