[MPlayer-users] Two-passes encoding - What happens exactly?

[D Richard Felker III]

On Thu, Jun 03, 2004 at 09:36:00AM +0200, Alain Barthélemy wrote:
> > Is that the highest resolution your tv card is capable of? I use 
> > "width=720:height=576".
> 
> Normally it should be 640x480 but I made lately a quick test with resolution
> 720x576 and it worked.

It depends on whether you have NTSC or PAL.

> > > -lavcopts vcodec=mpeg4:vbitrate=1800:mbd=2:acodec=mp3:v4mv -oac mp3lame
> > MP3 from Libavcodec (acodec=mp3) or lame (-oac mp3lame)?
> 
> True! I was wondering myself if -ovc lavc -lavcopts ...:acodec=mp3:abitrate=96
> or -oac mp3lame -lameopts ...:br=96 was not saying the same thing. What
> disturbed me was that acodec and abitrate were options of -ovc (v for "video").

-lavcopts acodec and abitrate are useless unless you're using -oac
lavc. For -oac mp3lame you use -lameopts!

> > "-vf denoise3d=5:4:7" should give better quality than "-vf pp=tn" (But 
> > needs more CPU-time).
> 
> I'm not familiar with denoise. Still learning about video compression (and still dumb).

Well don't use pp=tn. It removes noise but ADDS blocking artifacts
which are much worse!

Rich