gradfun: add notice from the MPlayer manual

Add notice telling that the filter is designed for playback only.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
oldabi
Stefano Sabatini 14 years ago committed by Anton Khirnov
parent 5ae4251c3b
commit 3eccfaa012
  1. 4
      doc/filters.texi

@ -471,6 +471,10 @@ regions by truncation to 8bit colordepth.
Interpolate the gradients that should go where the bands are, and
dither them.
This filter is designed for playback only. Do not use it prior to
lossy compression, because compression tends to lose the dither and
bring back the bands.
The filter takes two optional parameters, separated by ':':
@var{strength}:@var{radius}

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