[FFmpeg-trac] #625(avcodec:closed): support 2/3/5bit IMA ADPCM

FFmpeg trac at avcodec.org
Tue May 3 21:33:58 CEST 2016

#625: support 2/3/5bit IMA ADPCM
             Reporter:  ami_stuff      |                    Owner:
                 Type:  enhancement    |                   Status:  closed
             Priority:  wish           |                Component:  avcodec
              Version:  git-master     |               Resolution:  fixed
             Keywords:  adpcm roundup  |               Blocked By:
             Blocking:                 |  Reproduced by developer:  1
Analyzed by developer:  0              |

Comment (by ami_stuff):

 Yes, but the same happens with mono files, so there is a bug in decoder
 (it supports 100% correctly only 4-bit mode) - at least it proves that
 3bit stereo sample could be decoded not only by cool edit/audition.

 here is the mono output:


 I can upload 36kb dvi plugin from cool edit if you want to investigate
 this issue.

Ticket URL: <https://trac.ffmpeg.org/ticket/625#comment:21>
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