[FFmpeg-trac] #4142(avcodec:new): Fourth Generation Vocoder

[FFmpeg]

#4142: Fourth Generation Vocoder
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             Reporter:  cehoyos      |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  qcp          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by richardpl):

 I managed to decode this file (first you need to add 16bit frame type to
 each packet and convert bitstream from bigendian to little endian) with
 reference decoder EVRC-B.
 Reference decoder EVRC-C with its executable with name fourgv did not
 correctly decoded file. So this file probably is not EVRC-WB.

 I failed to find GUID as used in qcp on internet and fourcc (if) used in
 3gpp2 files.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4142#comment:7>
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