[FFmpeg-trac] #4616(avformat:open): Closed Captions: Data Ignored since exceeding screen width

FFmpeg trac at avcodec.org
Thu Aug 27 13:07:23 CEST 2015


#4616: Closed Captions: Data Ignored since exceeding screen width
-------------------------------------+-------------------------------------
             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  cc mov       |               Blocked By:
  videolan                           |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  1            |
-------------------------------------+-------------------------------------

Comment (by er.anshul.maheshwari@…):

 With your command "-c copy " it ignores eia-608 stream and copy only audio
 and video.

 In mov as I know there is lot of atoms inside atoms so correct way would
 be to see why cdat atom is ignored and copied in pkt->data. cdat atom
 should be parsed while demuxing and inserted while muxing in my opinion.

 In CCextractor we usually check 2 atoms for Closed caption ("cdat" and
 "cdt2")

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Ticket URL: <https://trac.ffmpeg.org/ticket/4616#comment:14>
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