[MPlayer-users] using mencoder with -mf, pixelation
bcboy at thecraftstudio.com
Sat Mar 26 22:05:06 CET 2005
On Fri, Mar 25, 2005 at 09:53:25PM -0600, Jeff Clagg wrote:
> On Sat, Mar 26, 2005 at 01:05:28AM +0000, Martin Collins wrote:
> > Try:
> > mencoder mf://'*jpg' -mf type=jpeg -vf scale=352:288 -ovc lavc \
> > -lavcopts vcodec=mpeg1video:mbd2:v4mv:trell:cbp:vbitrate=500 \
> > -nosound -ofps 25 -of mpeg -o filename.mpg
> This is wrong in a couple of different ways. v4mv is not possible in
> mpeg1 and mpeg2. "mbd2" is not a lavcopt - you probably mean mbd=2.
> Trying *cmp=2 or *cmp=3 is good in my experience, or *cmp=6 to trade off
> a large amount of speed against a small additional quality gain.
Thanks for all the replies! I'm getting much better results now.
Regarding the frame rate, mpeg1 seems to be very limited. I need it
much lower than the standard video rates, like 24 or 25 fps, but the
encoder doesn't allow anything below 24 as far as I can tell. I haven't
found docs on the subject. I guess I could duplicate frames before
encoding them, to get integer dividers of the supported rates. Is
there any other way to get lower frame rates?
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