[MPlayer-users] Fast motion video in low bitrate - with cmp?

Alexey com at nforum.de
Fri Feb 11 15:58:32 CET 2005

You can have much better quality with two-pass-encoding. That means you
have to encoode the video two times with EXACTLY the same settings
except that first pass=1 and the second time pass=2. Also I would rather
use a static target size and not a static bitrate. You just have to
enter the bitrate as a negative value and this will be considered as
target size in KB. If you have even more time you can try the gmc option
(global motion compensation) especialy with amateur shooting it can help
a lot



On Fri, 2005-02-11 at 14:19 +0100, CrimeDog wrote:
> Dnia 11-02-2005, pią o godzinie 03:15 +0000, Martin Collins napisał(a):
> > On Thu, 10 Feb 2005 20:16:17 +0100
> > CrimeDog <crimedog at wp.pl> wrote:
> > 
> > > I have DVD from my school prom, there are many fast motion scenes
> > ...
> > > but without *cmp option I'll get much higher quality (in fact I only
> > > checked the first 2 minutes with VERY fast motion scenes).
> > > Which *cmp values do you propose?
> > 
> > I have seen jerky motion when using *cmp, try without them. Otherwise
> > 2 is nearly as good as 3 and much faster.
> Thanks for your reply.
> Agrr, all night of encoding (I had to wake up on 5' to start second
> pass), reading DOCS, manuals, TODO etc. to notice that XVID produce
> better (visual) quality with default options!
> I know, that image provided by XVID is blur, but be honest - which
> windows user is using postprocessing to deblock? With lavc I had very
> blocky image, especially on fast moving and flat (walls) objects. 
> <flame mode=on>Sorry to say, but Xvid is better ;-) <flame mode=off>
> My command:
> mencoder dvd://1 -ovc xvid -xvidencopts
> pass=1:bitrate=922:vhq=4:me_quality=6:trellis -oac mp3lame -vf
> kerndeint,scale=512:384,hqdn3d=2:1:2 -mc 0 -noskip -o Studniowka.avi
> What you think about that?

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