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| author | Gyan Doshi <ffmpeg@gyani.pro> | 2021-01-23 15:41:52 +0530 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2021-01-23 15:41:52 +0530 |
| commit | e8b46b2c73a89c3554a4335f1de9de71f5c37846 (patch) | |
| tree | 983ed5a1dca78d90f614e1a3a838eb3e5b4b1839 /doc | |
| parent | c52ced7ca25d85bbc94bd4283eba8f0ccdc6525e (diff) | |
| download | ffmpeg-e8b46b2c73a89c3554a4335f1de9de71f5c37846.tar.gz | |
doc/ffmpeg: restore location of stray passage
Added in 88fc1438c69, this passage was separated from its original
context over the years with unrelated entries sandwiched in between.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/ffmpeg.texi | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 470ce961ce..96f6737412 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -1659,6 +1659,22 @@ graph will be added to the output file automatically, so we can simply write ffmpeg -i video.mkv -i image.png -filter_complex 'overlay' out.mkv @end example +As a special exception, you can use a bitmap subtitle stream as input: it +will be converted into a video with the same size as the largest video in +the file, or 720x576 if no video is present. Note that this is an +experimental and temporary solution. It will be removed once libavfilter has +proper support for subtitles. + +For example, to hardcode subtitles on top of a DVB-T recording stored in +MPEG-TS format, delaying the subtitles by 1 second: +@example +ffmpeg -i input.ts -filter_complex \ + '[#0x2ef] setpts=PTS+1/TB [sub] ; [#0x2d0] [sub] overlay' \ + -sn -map '#0x2dc' output.mkv +@end example +(0x2d0, 0x2dc and 0x2ef are the MPEG-TS PIDs of respectively the video, +audio and subtitles streams; 0:0, 0:3 and 0:7 would have worked too) + To generate 5 seconds of pure red video using lavfi @code{color} source: @example ffmpeg -filter_complex 'color=c=red' -t 5 out.mkv @@ -1773,22 +1789,6 @@ On by default, to explicitly disable it you need to specify @end table -As a special exception, you can use a bitmap subtitle stream as input: it -will be converted into a video with the same size as the largest video in -the file, or 720x576 if no video is present. Note that this is an -experimental and temporary solution. It will be removed once libavfilter has -proper support for subtitles. - -For example, to hardcode subtitles on top of a DVB-T recording stored in -MPEG-TS format, delaying the subtitles by 1 second: -@example -ffmpeg -i input.ts -filter_complex \ - '[#0x2ef] setpts=PTS+1/TB [sub] ; [#0x2d0] [sub] overlay' \ - -sn -map '#0x2dc' output.mkv -@end example -(0x2d0, 0x2dc and 0x2ef are the MPEG-TS PIDs of respectively the video, -audio and subtitles streams; 0:0, 0:3 and 0:7 would have worked too) - @section Preset files A preset file contains a sequence of @var{option}=@var{value} pairs, one for each line, specifying a sequence of options which would be |