[MEncoder-users] Call for video encoding settings

[Rich Felker]

On Tue, Jul 19, 2005 at 04:28:58PM -0700, Corey Hickey wrote:
> predia=2:dia=2:preme=2:vme=5:naq
> 
> All these individually gave slightly higher PSNR on my test clip, and
> didn't seem to make a visual difference.

vme=5 is experimental and currently same as the default of 4. why are
you including it?

also naq does nothing unless you're using adaptive quantization..

> qns=2
> 
> Qns lowers PSNR slightly but ends up dramatically reducing the amount of
> ringing artifacts around sharp borders. This makes a large difference
> when bitrate is low enough that ringing would normally be there, but
> little difference when bitrate is already high enough to alleviate the
> ringing. There doesn't seem to be any adverse effect to using it when
> it's not needed, though.
> http://article.gmane.org/gmane.comp.video.mplayer.user/26054/
> http://article.gmane.org/gmane.comp.video.mplayer.user/26148/

..but maybe qns counts as adaptive quant.

rich