[MEncoder-users] VHS capturing 2 avi

[Phil Ehrens]

RC wrote:
> On Thu, 15 Dec 2005 21:43:46 +0100
> M Daniel R M <4.mdr.magarzo at gmail.com> wrote:
> 
> > -lavcopts vcodec=mpeg4:vhq:vbitrate=2800:keyint=45:scplx_mask=0.2 -vf
> 
> vhq has been obsoleted by mbd=2, and you might want to use "trell" also.
>  
> Are you sure you want a keyint value that low?
> 
> You are generally better off using vqscale instead of vbitrate for
> single-pass encoding.
> 
> > crop=720:540,denoise3d,pp=de,scale=352:288 
> 
> You really need to use a deinterlacer (before cropping).  
> 
> I suggest trying the lavcopts "nr=" option rather than denoise3d filter,
> for both speed (and, IMHO, quality).  Start around "nr=400" and raise it
> a bit if you still get too much noise, and lower it if the video gets
> noticably blocky.

Note that using nr in single pass mode can be very different from 2-pass
mode, the value may need to be somewhat lower... with high values causing
a strange washout (whitening) of the image.