[FFmpeg-trac] #4924(avfilter:open): PTS/DTS timestamps get broken when concatenating MPEG-TS files using -f concat

[FFmpeg]

#4924: PTS/DTS timestamps get broken when concatenating MPEG-TS files using -f
concat
-------------------------------------+-------------------------------------
             Reporter:  jsnajdr      |                    Owner:  cus
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  concat       |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cus):

 * owner:   => cus
 * status:  new => open


Comment:

 You're right. avf->start_time is the start time of the output format
 context, that's why it is unset, the code should use the input format
 context, which is  cat->avf->start_time like you said.

 I'll make a patch and submit it to ffmpeg-devel.

 Thanks for figuring this out, and sorry for the regression.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4924#comment:4>
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