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author | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2009-10-22 00:57:30 +0400 |
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committer | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2009-10-22 00:57:30 +0400 |
commit | 190c166960b88f1b27932e1f274dd494862e8449 (patch) | |
tree | 53f8afd16ea216e451a4635ede5af84e4b2040c7 /doc | |
parent | 9abba21ad3474ff5c49dd5cf17facc8330386a95 (diff) |
Add video crop filter.
Originally committed as revision 20342 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'doc')
-rw-r--r-- | doc/libavfilter.texi | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/doc/libavfilter.texi b/doc/libavfilter.texi index f8189f1c38..7253abfa0f 100644 --- a/doc/libavfilter.texi +++ b/doc/libavfilter.texi @@ -84,4 +84,35 @@ Below is a description of the currently available video filters. Pass the source unchanged to the output. +@section crop + +Crop the input video to x:y:width:height. + +@example +./ffmpeg -i in.avi -vfilters "crop=0:0:0:240" out.avi +@end example + +``x'' and ``y'' specify the position of the top-left corner of the +output (non-cropped) area. + +The default value of ``x'' and ``y'' is 0. + +The ``w'' and ``h'' parameters specify the width and height of the +output (non-cropped) area. + +A value of 0 is interpreted as the maximum possible size contained in +the area delimited by the top-left corner at position x:y. + +For example the parameters: + +@example +"crop=100:100:0:0" +@end example + +will delimit the rectangle with the top-left corner placed at position +100:100 and the right-bottom corner corresponding to the right-bottom +corner of the input image. + +The default value of ``w'' and ``h'' is 0. + @bye |