(code from mplayer see their svn for detailed authorship)
parameters must be integers as we do not have mplayers parser
also the stuff passed to it through non constant globals is not supported
this should be fixed in mplayer first.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The gradfun filter was already integrated natively in libavfilter.
Both filters issue the same output, and have a comparable performance.
See thread:
Subject: [FFmpeg-devel] [PATCH] lavfi: remove gradfun mp wrapper
Date: Fri, 5 Aug 2011 00:19:04 +0200
This avoid a crash with in avfilter_merge_formats() in case one of the
filter formats list has multiple time the same entry.
Thanks to Mina Nagy Zaki for helping figuring out the issue.
Make the mp wrapper accept the syntax mp=filter=params as alternative
to mp=filter:params. The alternative syntax is sligthly more readable
and should simplify copy&paste of MPlayer filter strings to the mp
filter.