avfilter/paletteuse: add diff_mode

1 files changed, 15 insertions, 0 deletions

diff --git a/doc/filters.texi b/doc/filters.texi
index e5bf3a294f..485efcbe59 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -7026,6 +7026,21 @@ visible pattern for less banding, and higher value means less visible pattern
 at the cost of more banding.
 
 The option must be an integer value in the range [0,5]. Default is @var{2}.
+
+@item diff_mode
+If set, define the zone to process
+
+@table @samp
+@item rectangle
+Only the changing rectangle will be reprocessed. This is similar to GIF
+cropping/offsetting compression mechanism. This option can be useful for speed
+if only a part of the image is changing, and has use cases such as limiting the
+scope of the error diffusal @option{dither} to the rectangle that bounds the
+moving scene (it leads to more deterministic output if the scene doesn't change
+much, and as a result less moving noise and better GIF compression).
+@end table
+
+Default is @var{none}.
 @end table
 
 @subsection Examples