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Diffstat (limited to 'doc/filters.texi')
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1 files changed, 35 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 67c0da7bb6..39d353c8d1 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -10874,6 +10874,7 @@ Scale a subtitle stream to match the main video in size before overlaying @end example @end itemize +@anchor{selectivecolor} @section selectivecolor Adjust cyan, magenta, yellow and black (CMYK) to certain ranges of colors (such @@ -14289,6 +14290,40 @@ ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1]; @end example @end itemize +@section bench, abench + +Benchmark part of a filtergraph. + +The filter accepts the following options: + +@table @option +@item action +Start or stop a timer. + +Available values are: +@table @samp +@item start +Get the current time, set it as frame metadata (using the key +@code{lavfi.bench.start_time}), and forward the frame to the next filter. + +@item stop +Get the current time and fetch the @code{lavfi.bench.start_time} metadata from +the input frame metadata to get the time difference. Time difference, average, +maximum and minimum time (respectively @code{t}, @code{avg}, @code{max} and +@code{min}) are then printed. The timestamps are expressed in seconds. +@end table +@end table + +@subsection Examples + +@itemize +@item +Benchmark @ref{selectivecolor} filter: +@example +bench=start,selectivecolor=reds=-.2 .12 -.49,bench=stop +@end example +@end itemize + @section concat Concatenate audio and video streams, joining them together one after the |