diff options
Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index c16703704d..cca15fc03f 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -2805,6 +2805,42 @@ boxblur=luma_radius=min(h\,w)/10:luma_power=1:chroma_radius=min(cw\,ch)/10:chrom @end example @end itemize +@section codecview + +Visualize information exported by some codecs. + +Some codecs can export information through frames using side-data or other +means. For example, some MPEG based codecs export motion vectors through the +@var{export_mvs} flag in the codec @option{flags2} option. + +The filter accepts the following option: + +@table @option +@item mv +Set motion vectors to visualize. + +Available flags for @var{mv} are: + +@table @samp +@item pf +forward predicted MVs of P-frames +@item bf +forward predicted MVs of B-frames +@item bb +backward predicted MVs of B-frames +@end table +@end table + +@subsection Examples + +@itemize +@item +Visualizes multi-directionals MVs from P and B-Frames using @command{ffplay}: +@example +ffplay -flags2 +export_mvs input.mpg -vf codecview=mv=pf+bf+bb +@end example +@end itemize + @section colorbalance Modify intensity of primary colors (red, green and blue) of input frames. |