[FFmpeg-trac] #1088(swresample:new): Arbitrary dropping channels is not supported

FFmpeg trac at avcodec.org
Sat Mar 17 10:22:29 CET 2012

#1088: Arbitrary dropping channels is not supported
             Reporter:  cehoyos      |                    Owner:  michael
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:
              Version:  git-master   |  swresample
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by Cigaes):

 Using {{{-ac}}} does not ''drop'' channels, it ''remixes'' them. The
 remixing code can only work if it knows what channel is what: you do not
 mix side-left and side-right the same way than lower-rear-center and

 Furthermore, I believe that ''dropping'' channels is already supported
 with the {{{-map_channel}}} option.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1088#comment:1>
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