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doc/filters: correct description of overlay_vaapi

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Signed-off-by: Fei Wang <fei.w.wang@intel.com>
Reviewed-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
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Fei Wang 2022-08-05 14:11:18 +08:00 committed by Haihao Xiang
parent baf1f5dfb2
commit 4e0686df39
1 changed files with 2 additions and 2 deletions
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doc/filters.texi
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@ -26181,8 +26181,8 @@ Set the height of the overlaid video on the main video.
Default value is the height of input overlay video.
@item alpha
Set blocking detection thresholds. Allowed range is 0.0 to 1.0, it
requires an input video with alpha channel.
Set transparency of overlaid video. Allowed range is 0.0 to 1.0.
Higher value means lower transparency.
Default value is @code{0.0}.
@end table