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