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doc/filters: complete and correct vmafmotion section

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Gyan Doshi 2019-11-22 19:55:35 +05:30
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doc/filters.texi
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@ -19315,16 +19315,23 @@ vignette='PI/4+random(1)*PI/50':eval=frame
@section vmafmotion
Obtain the average vmaf motion score of a video.
It is one of the component filters of VMAF.
Obtain the average VMAF motion score of a video.
It is one of the component metrics of VMAF.
The obtained average motion score is printed through the logging system.
In the below example the input file @file{ref.mpg} is being processed and score
is computed.
The filter accepts the following options:
@table @option
@item stats_file
If specified, the filter will use the named file to save the motion score of
each frame with respect to the previous frame.
When filename equals "-" the data is sent to standard output.
@end table
Example:
@example
ffmpeg -i ref.mpg -lavfi vmafmotion -f null -
ffmpeg -i ref.mpg -vf vmafmotion -f null -
@end example
@section vstack