[FFmpeg-trac] #7949(undetermined:new): libopus ocl=downmix fails

FFmpeg trac at avcodec.org
Tue Dec 3 00:50:25 EET 2019

#7949: libopus ocl=downmix fails
             Reporter:  omniplex     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  OPUS         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by omniplex):

 [https://tools.ietf.org/html/rfc7845#section- RFC 7845] supports
 the observed FFmpeg behaviour, or IOW, Opus is not Vorbis and has its own
 ideas about ''channel mapping families''. But ''"cannot downmix stereo to
 stereo"'' still violates my idea of the
 [https://en.wikipedia.org/wiki/Principle_of_least_astonishment principle
 of least astonishment].😛

Ticket URL: <https://trac.ffmpeg.org/ticket/7949#comment:4>
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