[FFmpeg-devel] [PATCH]Fix pullup documentation (second try)

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Oct 30 10:33:45 CET 2013


The combination of pullup and fps filters unfortunately does not work 
correctly (the wrong frames are always dropped), it is necessary to use -r.

I tested more extensively this time, I was unable to make -vf pullup -r drop 
the wrong frames for files containing audio and video no matter where in the 
telecine cadence I started decoding.

Please comment, Carl Eugen
-------------- next part --------------
diff --git a/doc/filters.texi b/doc/filters.texi
index 14692a2..4a1d0dc 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -6422,9 +6422,11 @@ The main purpose of setting @option{mp} to a chroma plane is to reduce CPU
 load and make pullup usable in realtime on slow machines.
 @end table
-For example to inverse telecined NTSC input:
+To get best results (without duplicated frames in the output file), it is
+necessary to change the output frame rate, for example to inverse telecine
+NTSC input:
+ffmpeg -i input -vf pullup -r 24000/1001 ...
 @end example
 @section removelogo

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