DivX Tahanea

[symonjfox]

Hi, I've just discovered this nice codec ...
On the official site there's no documentation.
Can someone tell me what are the major improvements over Divx 5.05?

thanks

[Acaila]

Read What is DivX Labs? (http://forum.doom9.org/showthread.php?s=&threadid=55220) (and follow the link there) for more info.

[stax76]

on a short test I couldn't find a improvement

[symonjfox]

Ah, ok, thanks.

[temporance]

This site looks very intesting to me. Recently, DivX has released it's developments in fairly large steps (6 months - 1 year for codec featureset improvements). Now we might see weekly updates from the "labs".

Now all the major codecs have a VHQ/EHQ mode, although DivX calls it a "rate distortion algorithm" (a somewhat generic term). It seems like a certain performance ceiling has been reached and people are trying to find ways to throw CPU at the encoding problem to get quality improvements. Next step - try to get xHQ quality by using new, improved heuristics learnt from the xHQ work (in other words make it faster!).

The only problem I can see with the labs is that performance increases now are pretty small. A 1dB PSNR improvement is just about visible, but probably won't be noticed even in a doom9-style codec shootout. So how do we know if the new stuff is any good?