#11462: Cannot embed .scc file into .mp4 using -c:s copy
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Reporter: Zach | Owner: (none)
Type: enhancement | Status: new
Priority: important | Component:
| undetermined
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Zach):
Replying to [comment:1 Marth64]:
> It is not possible in this way.
> Closed Caption bytes are embedded into the video stream's SEI bytes or
user data, so a stream copy will not achieve a presentable result (also I
do not believe MP4 can house a discrete EIA608 stream, not that it would
be useful). Likely this will have to be a BSF filter.
I don't know what exact mechanism is required, but I do know it is
possible to embed 608 captions into the user data of an mp4 file. I have
provided links to such files with issue #11461 that can be referenced. I
used the term copy because I want to preserve and copy the 608 data. I
would expect such a bitstream filter to align the captions codes with
their respective frames via timecode and present the new video stream to
next part of the code.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11462#comment:2>
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