[FFmpeg-trac] #7604(avcodec:reopened): G.729B decoder not available.

FFmpeg trac at avcodec.org
Tue Dec 11 15:23:27 EET 2018

#7604: G.729B decoder not available.
             Reporter:               |                    Owner:
  sameerthapaevontech                |                   Status:  reopened
                 Type:  defect       |                Component:  avcodec
             Priority:  normal       |               Resolution:
              Version:  git-master   |               Blocked By:
             Keywords:  g729         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |

Comment (by cehoyos):

 Did you explain how you created the file you attached?

 I don't know how the ''2-byte Silence Insertion Descriptor'' is supposed
 to be detected, the following command lines allow to guess that the file
 likely contains SID's:
 $ ffplay -skip_initial_bytes 0 audio.g729
 $ ffplay -skip_initial_bytes 2 audio.g729
 $ ffplay -skip_initial_bytes 4 audio.g729
 $ ffplay -skip_initial_bytes 6 audio.g729
 $ ffplay -skip_initial_bytes 8 audio.g729
 I wonder if only the rtp level can detect the SID, and it may therefore be
 impossible to decode the provided file.

 Not necessarily related: Why are you not using FFmpeg's rtp stack?

Ticket URL: <https://trac.ffmpeg.org/ticket/7604#comment:5>
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