From a15c5c44e262c115f5e5820b35447012aa214955 Mon Sep 17 00:00:00 2001 From: Dave Rice Date: Tue, 8 Jul 2014 23:41:47 -0400 Subject: [PATCH] doc/filters: add a signalstats example Signed-off-by: Dave Rice --- doc/filters.texi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index ada33a78dd..b736b3fe31 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -7745,6 +7745,22 @@ ffprobe -f lavfi movie=example.mov,signalstats -show_entries frame_tags=lavfi.si Playback video while highlighting pixels that are outside of broadcast range in red. @example ffplay example.mov -vf signalstats="out=brng:color=red" +@end example + +@item +Playback video with signalstats metadata drawn over the frame. +@example +ffplay example.mov -vf signalstats=stat=brng+vrep+tout,drawtext=fontfile=FreeSerif.ttf:textfile=signalstat_drawtext.txt +@end example + +The contents of signalstat_drawtext.txt used in the command are: +@example +time %@{pts:hms@} +Y (%@{metadata:lavfi.signalstats.YMIN@}-%@{metadata:lavfi.signalstats.YMAX@}) +U (%@{metadata:lavfi.signalstats.UMIN@}-%@{metadata:lavfi.signalstats.UMAX@}) +V (%@{metadata:lavfi.signalstats.VMIN@}-%@{metadata:lavfi.signalstats.VMAX@}) +saturation maximum: %@{metadata:lavfi.signalstats.SATMAX@} + @end example @end itemize