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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 215 |
1 files changed, 110 insertions, 105 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 8fdcb19..9d387be 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -9037,6 +9037,111 @@ The command accepts the same syntax of the corresponding option. If the specified expression is not valid, it is kept at its current value. +@anchor{drawgraph} +@section drawgraph +Draw a graph using input video metadata. + +It accepts the following parameters: + +@table @option +@item m1 +Set 1st frame metadata key from which metadata values will be used to draw a graph. + +@item fg1 +Set 1st foreground color expression. + +@item m2 +Set 2nd frame metadata key from which metadata values will be used to draw a graph. + +@item fg2 +Set 2nd foreground color expression. + +@item m3 +Set 3rd frame metadata key from which metadata values will be used to draw a graph. + +@item fg3 +Set 3rd foreground color expression. + +@item m4 +Set 4th frame metadata key from which metadata values will be used to draw a graph. + +@item fg4 +Set 4th foreground color expression. + +@item min +Set minimal value of metadata value. + +@item max +Set maximal value of metadata value. + +@item bg +Set graph background color. Default is white. + +@item mode +Set graph mode. + +Available values for mode is: +@table @samp +@item bar +@item dot +@item line +@end table + +Default is @code{line}. + +@item slide +Set slide mode. + +Available values for slide is: +@table @samp +@item frame +Draw new frame when right border is reached. + +@item replace +Replace old columns with new ones. + +@item scroll +Scroll from right to left. + +@item rscroll +Scroll from left to right. + +@item picture +Draw single picture. +@end table + +Default is @code{frame}. + +@item size +Set size of graph video. For the syntax of this option, check the +@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}. +The default value is @code{900x256}. + +The foreground color expressions can use the following variables: +@table @option +@item MIN +Minimal value of metadata value. + +@item MAX +Maximal value of metadata value. + +@item VAL +Current metadata key value. +@end table + +The color is defined as 0xAABBGGRR. +@end table + +Example using metadata from @ref{signalstats} filter: +@example +signalstats,drawgraph=lavfi.signalstats.YAVG:min=0:max=255 +@end example + +Example using metadata from @ref{ebur128} filter: +@example +ebur128=metadata=1,adrawgraph=lavfi.r128.M:min=-120:max=5 +@end example + @section drawgrid Draw a grid on the input image. @@ -21498,6 +21603,11 @@ draw channels. Unrecognized or missing colors will be replaced by white color. @end table +@section adrawgraph +Draw a graph using input audio metadata. + +See @ref{drawgraph} + @section agraphmonitor See @ref{graphmonitor}. @@ -21863,111 +21973,6 @@ This filter supports the following commands: Close the current segment and step to the next one @end table -@section drawgraph, adrawgraph - -Draw a graph using input video or audio metadata. - -It accepts the following parameters: - -@table @option -@item m1 -Set 1st frame metadata key from which metadata values will be used to draw a graph. - -@item fg1 -Set 1st foreground color expression. - -@item m2 -Set 2nd frame metadata key from which metadata values will be used to draw a graph. - -@item fg2 -Set 2nd foreground color expression. - -@item m3 -Set 3rd frame metadata key from which metadata values will be used to draw a graph. - -@item fg3 -Set 3rd foreground color expression. - -@item m4 -Set 4th frame metadata key from which metadata values will be used to draw a graph. - -@item fg4 -Set 4th foreground color expression. - -@item min -Set minimal value of metadata value. - -@item max -Set maximal value of metadata value. - -@item bg -Set graph background color. Default is white. - -@item mode -Set graph mode. - -Available values for mode is: -@table @samp -@item bar -@item dot -@item line -@end table - -Default is @code{line}. - -@item slide -Set slide mode. - -Available values for slide is: -@table @samp -@item frame -Draw new frame when right border is reached. - -@item replace -Replace old columns with new ones. - -@item scroll -Scroll from right to left. - -@item rscroll -Scroll from left to right. - -@item picture -Draw single picture. -@end table - -Default is @code{frame}. - -@item size -Set size of graph video. For the syntax of this option, check the -@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}. -The default value is @code{900x256}. - -The foreground color expressions can use the following variables: -@table @option -@item MIN -Minimal value of metadata value. - -@item MAX -Maximal value of metadata value. - -@item VAL -Current metadata key value. -@end table - -The color is defined as 0xAABBGGRR. -@end table - -Example using metadata from @ref{signalstats} filter: -@example -signalstats,drawgraph=lavfi.signalstats.YAVG:min=0:max=255 -@end example - -Example using metadata from @ref{ebur128} filter: -@example -ebur128=metadata=1,adrawgraph=lavfi.r128.M:min=-120:max=5 -@end example - @anchor{ebur128} @section ebur128 |
