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author | Michael Niedermayer <michaelni@gmx.at> | 2015-03-08 01:22:34 +0300 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2015-03-08 17:02:49 +0300 |
commit | 8fabbd0dcf3ac91bfced555fdf4819f500b6a88e (patch) | |
tree | 10d4abc7ba47ac0db312c9158758e096585d804a /doc/filters.texi | |
parent | 0b69c53a610af9cc9d4690929e009594f096e846 (diff) |
doc/filters: Add some random examples for fftfilt
Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index b15087c0e1..b0ea2ca2ca 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -4629,6 +4629,29 @@ The coordinates of the current sample. The width and height of the image. @end table +@subsection Examples + +@itemize +@item +High-pass: +@example +fftfilt=dc_Y=128:weight_Y='squish(1-(Y+X)/100)' +@end example + +@item +Low-pass: +@example +fftfilt=dc_Y=0:weight_Y='squish((Y+X)/100-1)' +@end example + +@item +Sharpen: +@example +fftfilt=dc_Y=0:weight_Y='1+squish(1-(Y+X)/100)' +@end example + +@end itemize + @section field Extract a single field from an interlaced image using stride |