On 8/1/17, Tobias Rapp <t.r...@noa-archive.com> wrote: > On 01.08.2017 13:03, Paul B Mahol wrote: >> Signed-off-by: Paul B Mahol <one...@gmail.com> >> --- >> doc/filters.texi | 13 ++ >> libavfilter/Makefile | 1 + >> libavfilter/allfilters.c | 1 + >> libavfilter/vf_premultiply.c | 307 >> ++++++++++++++++++++++++++++++++++++------- >> 4 files changed, 277 insertions(+), 45 deletions(-) >> >> diff --git a/doc/filters.texi b/doc/filters.texi >> index 4089135..a50696a 100644 >> --- a/doc/filters.texi >> +++ b/doc/filters.texi >> @@ -14532,6 +14532,19 @@ ffmpeg -i INPUT -vf trim=duration=1 >> >> @end itemize >> >> +@section unpremultiply >> +Apply alpha unpremultiply effect to input video stream using first plane >> +of second stream as alpha. >> + >> +Both streams must have same dimensions and same pixel format. >> + >> +The filter accepts the following option: >> + >> +@table @option >> +@item planes >> +Set which planes will be processed, unprocessed planes will be copied. >> +By default value 0xf, all planes will be processed. >> +@end table > > IMHO using a flags-like string "planes=rgb" would be more user-friendly > than a bitmask. At least the documentation should tell which bit refers > to what channel.
It is directly related to pixel format. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
