[FFmpeg-devel] Some footage for H264 on kdenlive.org

Carl Eugen Hoyos cehoyos
Wed Feb 25 00:42:44 CET 2009

Jean-Michel Pour? <jm <at> poure.com> writes:

> Skip B-Frames during display (which is already an option in Kdenlive,
> but is not powerfull enough on single-cores).

I tested a few random videos (all with B-Frames) today on different hardware,
and I always saw more than 50% speed improvement (= less than half needed
processor time) for skiploopfilter=all:skipframe=nonref

I severely doubt there is any processor where multithreaded h264 decoding will
make the difference between usable and non-usable, except that the user may then
use deblocking on B-frames while editing in real-time where he has to live with
P frames without loop-filter currently.

Carl Eugen

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