[FFmpeg-trac] #9337(ffmpeg:new): 'atempo' didn't work unless '-map 0' was added

FFmpeg trac at avcodec.org
Thu Jul 22 18:26:08 EEST 2021

#9337: 'atempo' didn't work unless '-map 0' was added
             Reporter:  markfilipak  |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:  atempo       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Comment (by markfilipak):

 Replying to [comment:2 Gyan]:
 > `-map 0 -map "[v]" -map "[a]"` will first include the source
 (unmodified) tracks and then the filtered tracks. Check the stream mapping
 in the log of 3.cmd
 From 3.log, you can't tell which output tracks are from the graph and
 which tracks are from '-map 0'.
Ticket URL: <https://trac.ffmpeg.org/ticket/9337#comment:3>
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