doc/filters: add tmix examples

Signed-off-by: Paul B Mahol <onemda@gmail.com>

diff --git a/doc/filters.texi b/doc/filters.texi
index f31747ebf57dcede93ac261266cff9c2b5b6edff..1b817f374b53143cf27184c0caefac2936b1d772 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15615,6 +15615,28 @@ of each weight multiplied with pixel values to give final destination
 pixel value. By default @var{scale} is auto scaled to sum of weights.
 @end table
 
+@subsection Examples
+
+@itemize
+@item
+Average 7 successive frames:
+@example
+tmix=frames=7:weights="1 1 1 1 1 1 1"
+@end example
+
+@item
+Apply simple temporal convolution:
+@example
+tmix=frames=3:weights="-1 3 -1"
+@end example
+
+@item
+Similar as above but only showing temporal differences:
+@example
+tmix=frames=3:weights="-1 2 -1":scale=1
+@end example
+@end itemize
+
 @section tonemap
 Tone map colors from different dynamic ranges.