[FFmpeg-trac] #11146(avformat:new): "concat" demuxer with resizing filters generated output of incomplete video

[FFmpeg]

#11146: "concat" demuxer with resizing filters generated output of incomplete video
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             Reporter:  degradox    |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  concat      |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by MasterQuestionable):

 ͏    No source can be perfectly reliable.
 ͏    Blind trust only end in woes.

 ͏    Interesting alternative:
 ͏    https://www.ffmpeg.org/ffmpeg-filters.html#concat
 ͏    ; but for procedure reasons won't handle "-c copy".

 ͏    I wonder if it would be possible to utilize "-map"..?
 ͏    It appears many "concat" are mere simple join.
 ͏    So several "-map" piled together may then mean... exactly same
 things?
 ͏    E.g. !`-i "0" -i "1" -map 1 -map 0` ... seemed working?
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Ticket URL: <https://trac.ffmpeg.org/ticket/11146#comment:21>
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