[MPlayer-users] Mencoder 1.0pre4 and DVD rip

[Ville Saari]

On Sat, May 08, 2004 at 02:31:08PM -0700, Loren Merritt wrote:

> Also, mbd=2 is always better than mbd=1 (aka vhq).

Always? Are you sure?

I encode mostly using constant quantizer. I assume the quality should
then be pretty much constant and better encoding options should produce
smaller files.

I once compared vhq and mbd=2 by encoding ten full-length movies using
both. Nine out of ten came out smaller with vhq! Some quite significantly,
up to five per cent. I couldn't see any perceptible difference in quality.

I've been stuck to vhq ever since. My lavcopts are usually something like
this:

vcodec=mpeg4:vmax_b_frames=2:v4mv:vhq:qpel:keyint=120:lmin=2:lmax=2:vb_qfactor=2

The resulting quantizers are 2 for non-B-frames and 4 for B-frames. That's
what 1.0pre2 used to do by default when requested bitrate was so high it
saturated the quantizers.

-- 
 Ville