[FFmpeg-trac] #11619(avcodec:new): "libopus" downmix (5.1 -> 2ch) unintended volume clipping

[FFmpeg]

#11619: "libopus" downmix (5.1 -> 2ch) unintended volume clipping
---------------------------------+-----------------------------------
             Reporter:  Marco    |                    Owner:  (none)
                 Type:  defect   |                   Status:  new
             Priority:  normal   |                Component:  avcodec
              Version:  7.1      |               Resolution:
             Keywords:  libopus  |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  1        |
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Comment (by Marco):

 Thank you for the reply.
 Sure, first downmixing to WAV and then converting WAV to OPUS does the
 job, but I would like to downmix directly to OPUS, and that sounds like an
 issue since it should give the same output as WAV.

 Tried your command and it outputs many errors, the first lines of error
 are:
 {{{
 [Parsed_channelmap_0 @ 0x7f4a000047c0] input channel 'DL' not available
 from input layout '5.1(side)'
 [Parsed_channelmap_0 @ 0x7f4a000047c0] input channel 'DR' not available
 from input layout '5.1(side)'
 }}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/11619#comment:3>
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