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author | Arwa Arif <arwaarif1994@gmail.com> | 2015-02-24 09:47:30 +0300 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2015-03-07 15:07:10 +0300 |
commit | 48b5be65aedbc4ae12b3a0c32ed5d86a12dd039a (patch) | |
tree | aa9688c9f30605f8e9781af8748ac5fd310b7349 /doc/filters.texi | |
parent | 3499a1c0a91c8bc81556d837c87bf991ef6657c1 (diff) |
avfilter: Add FFT domain filter.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 0c72145d80..b15087c0e1 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -4591,6 +4591,44 @@ fade=t=in:st=5.5:d=0.5 @end itemize +@section fftfilt +Apply arbitrary expressions to samples in frequency domain + +@table @option +@item dc_Y +Adjust the dc value (gain) of the luma plane of the image. The filter +accepts an integer value in range @code{0} to @code{1000}. The default +value is set to @code{0}. + +@item dc_U +Adjust the dc value (gain) of the 1st chroma plane of the image. The +filter accepts an integer value in range @code{0} to @code{1000}. The +default value is set to @code{0}. + +@item dc_V +Adjust the dc value (gain) of the 2nd chroma plane of the image. The +filter accepts an integer value in range @code{0} to @code{1000}. The +default value is set to @code{0}. + +@item weight_Y +Set the frequency domain weight expression for the luma plane. + +@item weight_U +Set the frequency domain weight expression for the 1st chroma plane. + +@item weight_V +Set the frequency domain weight expression for the 2nd chroma plane. + +The filter accepts the following variables: +@item X +@item Y +The coordinates of the current sample. + +@item W +@item H +The width and height of the image. +@end table + @section field Extract a single field from an interlaced image using stride |