[FFmpeg-trac] #8081(avcodec:new): support of g729b codec

[FFmpeg]

#8081: support of g729b codec
-------------------------------------+-------------------------------------
             Reporter:  AlexanderU   |                     Type:
                                     |  sponsoring request
               Status:  new          |                 Priority:  normal
            Component:  avcodec      |                  Version:
                                     |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 ffmpeg can't decode g729b codec. I would be nice to have decoder for this
 codec. Sample file, original codec and reference output attached.

 How to reproduce:
 ffmpeg -i 662478440-short.wav a1.wav
 {{{
 ffmpeg version N-41686-g91459bd Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Apr 30 2015 12:25:50 with gcc 4.9.2 (Ubuntu
 4.9.2-0ubuntu1~14.04)
   configuration: --extra-cflags=-I/home/alex/work/ffmpeg/include --extra-
 ldflags='-L/home/alex/work/ffmpeg/lib -L/usr/lib64'
 --bindir=/home/alex/bin --extra-libs=-ldl --enable-gpl --enable-nonfree
 --enable-version3 --enable-libfdk_aac --enable-libmp3lame --enable-
 libvorbis --enable-libvpx --enable-libx264 --enable-libopencore-amrnb
 --enable-libvo-amrwbenc --enable-libopencore-amrwb --enable-libspeex
   libavutil      54.  7.100 / 54.  7.100
   libavcodec     56.  1.100 / 56.  1.100
   libavformat    56.  4.101 / 56.  4.101
   libavdevice    56.  0.100 / 56.  0.100
   libavfilter     5.  1.100 /  5.  1.100
   libswscale      3.  0.100 /  3.  0.100
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  0.100 / 53.  0.100
 [wav @ 0x3292c80] Estimating duration from bitrate, this may be inaccurate
 [wav @ 0x3292c80] Could not find codec parameters for stream 0 (Audio:
 none (5[1][0][0] / 0x0135), 8000 Hz, 2 channels, 17 kb/s): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 662478440-short.wav: could not find codec parameters
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, wav, from '662478440-short.wav':
   Duration: 00:00:20.17, bitrate: 17 kb/s
     Stream #0:0: Audio: none (5[1][0][0] / 0x0135), 8000 Hz, 2 channels,
 17 kb/s
 No decoder for stream #0:0, filtering impossible
 Error opening filters!
 }}}

 Any help are very appreciated!
 Thank you.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8081>
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