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

FFmpeg trac at avcodec.org
Tue Oct 13 01:00:39 CEST 2015


#4924: PTS/DTS timestamps get broken when concatenating MPEG-TS files using -f
concat
-------------------------------------+-------------------------------------
             Reporter:  jsnajdr      |                    Owner:
                 Type:  defect       |                   Status:  new
             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):

 * cc: cus@… (added)


Comment:

 The main cause of the regression is that avformatcontext->start_time is
 unset after opening the stream, but set after reading the first packet.

 With my inpoint patch concat demuxer was changed to use the start_time
 before reading the first packet.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4924#comment:2>
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