[FFmpeg-trac] #3335(undetermined:reopened): Audio Rematrix error going from 16ch

FFmpeg trac at avcodec.org
Sat Mar 1 21:51:20 CET 2014

#3335: Audio Rematrix error going from 16ch
             Reporter:               |                    Owner:
  zcybercomputing                    |                   Status:  reopened
                 Type:  defect       |                Component:
             Priority:  important    |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Changes (by Cigaes):

 * priority:  normal => important


 Replying to [comment:7 zcybercomputing]:
 > C:\Users\3ABN>"C:\Users\3ABN\Another Gui\ffmpeg-20140115-git-
 785dc14-win64-static\bin\ffmpeg.exe" -i "F:\test.mov" -y -vcodec prores
 -profile:v 1 -acodec pcm_s16le -ar 48000 -ac 2 "F:\Capture0000test.mov"

 Your file has 16 channels, you ask to make that two. How? Take the first
 two and drop the others? Mix the 0-7 together and 8-15 together? Mix the
 even ones together and the odd ones together? None of the above?

 FFmpeg does not guess that kind of thing, this is not a magic trick:

 > [auto-inserted resampler 0 @ 000000000525ac60] [SWR @ 0000000002940900]
 Rematrix is needed between 16 channels and stereo but there is not enough
 information to do it

Ticket URL: <https://trac.ffmpeg.org/ticket/3335#comment:9>
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