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Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 2741f96e4f..b45df573f7 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -1166,6 +1166,9 @@ See @var{start_frame}. @item nb_frames, n See @var{nb_frames}. +@item alpha +If set to 1, fade only alpha channel, if one exists on the input. +Default value is 0. @end table A few usage examples follow, usable too as test scenarios. @@ -1181,6 +1184,9 @@ fade=in:0:25, fade=out:975:25 # make first 5 frames black, then fade in from frame 5-24 fade=in:5:20 + +# fade in alpha over first 25 frames of video +fade=in:0:25:alpha=1 @end example @section fieldorder |