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author | Michael Niedermayer <michaelni@gmx.at> | 2015-05-02 22:00:01 +0300 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2015-05-02 22:15:48 +0300 |
commit | 94340e4b28cc73ca7f9895892a2768df68d027a0 (patch) | |
tree | b3a749c6825d9506146d19603a669316e22e232e /doc/filters.texi | |
parent | 4e8ee7acb858747b2bcdfb2384f9504df3b00a3a (diff) |
avfilter: add find_rect filter
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index b7a9c9be81..68ad41314e 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -5163,6 +5163,36 @@ framework. It does not take parameters. +@section find_rect + +Find a rectangular object + +It accepts the following options: + +@table @option +@item object +Filepath of the object image, needs to be in gray8. + +@item threshold +Detection threshold, default is 0.5. + +@item mipmaps +Number of mipmaps, default is 3. + +@item xmin, ymin, xmax, ymax +Specifies the rectangle in which to search. +@end table + +@subsection Examples + +@itemize +@item +Generate a representative palette of a given video using @command{ffmpeg}: +@example +ffmpeg -i file.ts -vf find_rect=newref.pgm,cover_rect=cover.jpg:mode=cover new.mkv +@end example +@end itemize + @anchor{format} @section format |