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Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 58 |
1 files changed, 51 insertions, 7 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index d2f2b2e8ef..4c85d71be3 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -3630,7 +3630,6 @@ The list of the currently supported filters follows: @item ivtc @item kerndeint @item mcdeint -@item noise @item ow @item perspective @item phase @@ -3657,12 +3656,6 @@ Adjust gamma, brightness, contrast: @example mp=eq2=1.0:2:0.5 @end example - -@item -Add temporal noise to input video: -@example -mp=noise=20t -@end example @end itemize See also mplayer(1), @url{http://www.mplayerhq.hu/}. @@ -3692,6 +3685,57 @@ noformat=yuv420p,vflip noformat=yuv420p:yuv444p:yuv410p @end example +@section noise + +Add noise on video input frame. + +This filter accepts a list of options in the form of @var{key}=@var{value} +pairs separated by ":". A description of the accepted options follows. + +@table @option +@item all_seed +@item c0_seed +@item c1_seed +@item c2_seed +@item c3_seed +Set noise seed for specific pixel component or all pixel components in case +of @var{all_seed}. Default value is @code{123457}. + +@item all_strength, as +@item c0_strength, c0s +@item c1_strength, c1s +@item c2_strength, c2s +@item c3_strength, c3s +Set noise strength for specific pixel component or all pixel components in case +@var{all_strength}. Default value is @code{0}. Allowed range is [0, 100]. + +@item all_flags, af +@item c0_flags, c0f +@item c1_flags, c1f +@item c2_flags, c2f +@item c3_flags, c3f +Set pixel component flags or set flags for all components if @var{all_flags}. +Available values for component flags are: +@table @samp +@item a +averaged temporal noise (smoother) +@item p +mix random noise with a (semi)regular pattern +@item q +higher quality (slightly better looking, slightly slower) +@item t +temporal noise (noise pattern changes between frames) +@item u +uniform noise (gaussian otherwise) +@end table +@end table + +Some examples follow: +@example +Add temporal and uniform noise to input video: +noise=alls=20:allf=t+u +@end example + @section null Pass the video source unchanged to the output. |