[FFmpeg-user] Strange CPU usage in MPEG2 encoding

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Aug 12 18:34:18 CEST 2014

SF <sylvain <at> lahiette.com> writes:

> *  If i add "maxrate" and "bufsize" options, then 
> it varies between 5 ms and 80ms (yes !) for the 
> same video sequence. 

> It seems to be related to movement in the scene, 
> but i do not see the relationship between the 
> maxrate/bufsize parameters and the movement.

I don't know much about motion compensation and rate 
control but I find the relationship unavoidable.

Is the performance issue you see reproducible with 
"ffmpeg" (the application)?

Carl Eugen

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