[FFmpeg-trac] #10498(avcodec:new): Concetrating videos with same attributes in ffmpeg result much longer in time invalid output video (300hours+) than 1hour.

FFmpeg trac at avcodec.org
Mon Jul 31 14:54:03 EEST 2023


#10498: Concetrating videos with same attributes in ffmpeg result much longer in
time invalid output video (300hours+) than 1hour.
-------------------------------------+-------------------------------------
             Reporter:  elias        |                    Owner:  (none)
  tsolis                             |
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avcodec
              Version:  5.1.3        |               Resolution:
             Keywords:  black        |               Blocked By:
  screen, ivalid time                |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by elias tsolis):

 UPDATE: Using libx264 fixed the problem. But with libx265 not.

 {{{
  for avii in *.mp4;   do ffmpeg -i "$avii" -vcodec  libx264 -vb 20M  -r 30
 -crf 17  -c:a copy -fflags +genpts "ab_${avii//.*}.avi"   ; done;

 fmpeg -fflags +igndts -f concat -safe 0  -i vids.txt -c copy  -shortest
 finalvideo_.mp4
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10498#comment:1>
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