[XviD-devel] question about gmc
skal
skal at planet-d.net
Fri Mar 7 13:08:32 CET 2003
Hi,
On Thu, 2003-03-06 at 18:10, Christoph Lampert wrote:
>
> GMC can be switched on/off for every frame. In fact one just decides
> whether to use P-VOP (no GMC) or S(GMC)-VOP (with GMC). At the moment,
> S(GMC) is chosen if and only if non-translational global motion is
> detected. You can also decide whether to use GMC on a macroblock level,
> this is just SAD based, so there is plenty of room for optmization.
btw,
Did someone (Radek?) tried using the average motion vector from
previous frame as (EPZS) predictor also?? I think i works well
for sequences taken from a DV camera, but I'm not sure...
(and it might help GMC, too...)
bye,
Skal
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