doc/filters: move drawgraph to video filters chapter

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