[FFmpeg-trac] #1482(undetermined:new): FFMPEG fails to create a SRT file when extracting Subtitles

FFmpeg trac at avcodec.org
Thu Jun 28 22:11:47 CEST 2012


#1482: FFMPEG fails to create a SRT file when extracting Subtitles
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             Reporter:  ramitbhalla  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by Cigaes):

 I have several problems with this issue:

 First of all, in your WTV file, none of the subtitles packets have the
 keyframe flag. As a consequence, {{{-scodec copy}}} does not copy
 anything. And with {{{-copyinkf:s}}}, I get the infamous {{{non
 monotonically increasing dts}}}.

 Second, if I remux only the video, not the subtitles, then
 {{{ccextractor}}} sees the subtitles in the resulting TS file. That means
 that the CC subtitles are not in fact in the subtitle stream but in the
 video stream. I do not know whether that is normal or whether the WTV
 demuxer is at fault.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1482#comment:9>
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