[XviD-devel] GMC material with 3 warppoints?

[Marco Al]

From: "skal" <skal at planet-d.net>

> All the more that
> a good ME pass may be greedy on finding motion
> vectors that eagerly lowers the bit-count at the
> expense of the smoothness of the motion field.
> But as far as GMC is concerned, a good motion
> vector for bitcount might be a bad one for evaluating
> the overall motion :(

Why not try to make the full pel search "true motion" and
do R-D optimization afterwards? Lets you use a better
rate model too (although still not optimal of course, you
cant find the optimal MVs in a R-D sense in a single pass).
As skipping examplifies rather well, the simple forward
only R-D optimization can lead to poor results.

Marco