#9862: Can't render subtitles on a transparent video
-----------------------------------+---------------------------------------
Reporter: fduck | Type: defect
Status: new | Priority: normal
Component: avfilter | Version: unspecified
Keywords: subtitles | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-----------------------------------+---------------------------------------
Rendering subtitles on a transparent video track (with the alpha option
set to 1) results in subtitles that don't disappear when they should.
Later subtitles are drawn right over earlier.
{{{
ffmpeg -y\
-ss 0 -t 15 -i 'video.mov'\
-filter_complex "
nullsrc=size=1080x1080 [subtitles];
[subtitles] subtitles=subtitles.srt:alpha=1 [subtitles];
[0][subtitles] overlay=x=0:y=0:shortest=1 [out]
"\
-map [out] \
'../test.mp4'
}}}
ffmpeg version 5.1
built with Apple clang version 13.1.6 (clang-1316.0.21.2.5)
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9862>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
[email protected]
https://ffmpeg.org/mailman/listinfo/ffmpeg-trac
To unsubscribe, visit link above, or email
[email protected] with subject "unsubscribe".
