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Add format and noformat filters.

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Originally committed as revision 20390 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini
2009-10-27 21:40:43 +00:00
parent 51135d1d8e
commit fcbed3c735
5 changed files with 193 additions and 1 deletions
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doc/libavfilter.texi
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@@ -111,6 +111,40 @@ corner of the input image.
The default value of ``width'' and ``height'' is 0.
@section format
Convert the input video to one of the specified pixel formats.
Libavfilter will try to pick one that is supported as the input to
the next filter.
The filter takes as argument a list of pixel format names, separated
by ``:'', for example ``yuv420p:monow:rgb24''.
The following command:
@example
./ffmpeg -i in.avi -vfilters "format=yuv420p" out.avi
@end example
will convert the input video to the format ``yuv420p''.
@section noformat
Force libavfilter not to use any of the specified pixel formats as the
input to the next filter.
The filter takes as argument a list of pixel format names, separated
by ``:'', for example ``yuv420p:monow:rgb24''.
The following command:
@example
./ffmpeg -i in.avi -vfilters "noformat=yuv420p, vflip" out.avi
@end example
will make libavfilter use a format different from ``yuv420p'' as the
input to the vflip filter.
@section null
Pass the source unchanged to the output.