avfilter/vf_waveform: add graticule support

Signed-off-by: Paul B Mahol <onemda@gmail.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/doc/filters.texi b/doc/filters.texi
index 4ec7507044..3f7153d398 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -13161,6 +13161,20 @@ Similar as above, but shows difference between blue and red chroma.
 @item color
 Displays actual color value on waveform.
 @end table
+
+@item graticule, g
+Set which graticule to display.
+
+@table @samp
+@item none
+Do not display graticule.
+
+@item green
+Display green graticule showing legal broadcast ranges.
+@end table
+
+@item opacity, o
+Set graticule opacity.
 @end table
 
 @section xbr