[FFmpeg-trac] #11614(ffmpeg:new): concat demux: video from 2nd file missing in concatenated file

[FFmpeg]

#11614: concat demux: video from 2nd file missing in concatenated file
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             Reporter:  bzipitidoo      |                    Owner:  (none)
                 Type:  defect          |                   Status:  new
             Priority:  normal          |                Component:  ffmpeg
              Version:  7.1             |               Resolution:
             Keywords:  concat demuxer  |               Blocked By:
             Blocking:                  |  Reproduced by developer:  0
Analyzed by developer:  0               |
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Comment (by bzipitidoo):

 Maybe it's an issue with the colorspace?  I tried this:

 ffmpeg -ss 25 -i wp12.mp4 -c:v mpeg4 -c:a copy -b:v 400k -colorspace 1
 -color_primaries 1 -color_trc 1 wp12.mkv

 Then I concatenated the files.  Didn't work, the video from wp3.mkv still
 doesn't show up in wp123.mkv.

 Next, I tried:

 ffmpeg -ss 25 -i wp12.mp4 -c:v mpeg4 -c:a copy -b:v 400k -vf
 colorspace=all=bt470bg/bt709/bt709:iall=bt601-6-625:fast=1 -colorspace 1
 -color_primaries 1 -color_trc 1 wp12.mkv

 Still didn't work.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11614#comment:1>
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