http://www.divx.com/divx/windows/beta/
 
DivX Manihi Codec Beta 1
What's New:
View a summary of new features
 
High Quality encoding mode  
Different motion estimation criteria  
Rate distortion algorithm  
High Quality psychovisual mode  
Texture cortex masking and Rate distortion algorithm  
Hybrid mode (Texture cortex masking)  
High Quality B frame mode  
The motion estimation for B frame has been improved  
Quantization modulation is changed  
Feedback mode  
Allows visual feedback during encoding  
Decoder rearchitecture  
Decoder is 10 to 30% faster on all CPU platforms  
Decoder supports auto-postprocessing  
Encoder GUI  
The codec GUI has been redesigned to ease accessibility and simplify overall usage.  
RC modes:  
Enabled complexity vector logfile, and experimental texture / motion modulation switch  
RC to support real time control through API support  
I frame insertion forced through API support  
Fixed:
 
Fix for quantizer overshoot when over bitrate following a transition to a complex scene  
Change in quantizer from one frame to next limited to change in ideal quantizer or +-2  
Fix for a bug in RGB32 to YUV conversion on P4  
A minor issue with Multiple CPU configuration  
Fix for broken B-frames ('P' in FrameSpec was occasionally producing an I frame)  
3.11 Compatibility improved (NO mismatach at all on ALL the clips tested, more than 60 hours of contents!)  
RC VBV enforce "3 sec" max bitrate  
Bugfixes, performance improvements in nth-pass strategy planning  
MV reuse is functional  
Qpel, B frames and slow and slowest mode doesn't generate artifacts anymore
 
  je viens de voir ça
si kkun a testé, je fais 2-3 tests de mon coté

d'après kk tests fait par des forumeurs de Doom9, pas de différence et qui plus est il est un peu plus lent à l'encodage avec les mêmes options.