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doc/filters: add metadata information for blackframe 

Reviewed-by: Moritz Barsnick <barsnick@gmx.net>
Signed-off-by: Lou Logan <lou@lrcd.com>
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Martin Vignali 2016-10-23 17:16:12 +02:00 committed by Lou Logan
parent 2d9433ded9
commit d0d6902444
1 changed files with 4 additions and 0 deletions
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doc/filters.texi
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@ -4539,6 +4539,10 @@ the position in the file if known or -1 and the timestamp in seconds.
In order to display the output lines, you need to set the loglevel at In order to display the output lines, you need to set the loglevel at
least to the AV_LOG_INFO value. least to the AV_LOG_INFO value.
This filter exports frame metadata @code{lavfi.blackframe.pblack}.
The value represents the percentage of pixels in the picture that
are below the threshold value.
It accepts the following parameters: It accepts the following parameters:
@table @option @table @option