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

FFmpeg trac at avcodec.org
Thu Aug 27 12:42:06 CEST 2015

#4616: Closed Captions: Data Ignored since exceeding screen width
             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  cc mov       |               Resolution:
  videolan                           |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by cehoyos):

 Works fine (?) here:
 $ ffmpeg -i Full\ Episode\ 2.mp4 -c copy out.mov
 But that wasn't my question, what I meant was: If the mov demuxer removes
 the header bytes that the cc decoder doesn't understand, would the mov
 muxer have all necessary information to recreate the header if somebody
 implemented it? Or would the information be lost?
 Or in other words: Is a separate codec id necessary for closed captions in
 mov because it contains different data than closed captions in mpeg
 streams or is it possible to stream copy both from mov and mpeg to mov and
 therefore one codec id is correct?

Ticket URL: <https://trac.ffmpeg.org/ticket/4616#comment:12>
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