#9436: Strange subtitles "Chapter 01" added when input has chapters and output
is
mp4
-------------------------------------+-------------------------------------
Reporter: Andre | Owner: (none)
Type: defect | Status: closed
Priority: normal | Component:
| undetermined
Version: unspecified | Resolution: invalid
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by mkver):
* status: new => closed
* resolution: => invalid
Comment:
It does not appear "out of nowhere", it appears because the source file
contained chapters and ffmpeg by default tries to preserve them. That it
appears as a subtitle stream is an oddity of mp4, where chapters and
subtitles are muxed similarly. But a proper player can distinguish between
them, as ffmpeg/ffprobe do: They show it as data stream (notice the
"Data:"), not as subtitle.
If your mp4 player got confused by this, you can disable copying of
chapters with -map_chapters -1.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9436#comment:1>
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