Divx 5.1 released

[Batman]

Divx 5.1, the latest version of the popular divx codec has been released. It includes a "Redesigned encoder GUI" and improved decoding. www.divx.com for more information, downloads.

Divx 5.1 is the culmination of intensive research and betas from "Divx Labs" (http://labs.divx.com).

[The Edge]

Change log:

DivX v5.1 New:
Added a new high-quality psychovisual mode that includes the following features:

Texture cortex masking and rate distortion algorithm
Hybrid mode (with texture cortex masking)
peed optimization
Chroma operation (this option is not enabled by default for performance reasons; to enable it, create an empty file in C:\ called "DivxPvShapingChroma.txt" for "fast" mode and "DivxPvSimpleChroma.txt" for slow mode; testing shows only 1-2% gains in JND tests)

The decoder has been rearchitected and is now 10 to 30% faster on all CPU platforms.
The decoder now supports automatic post- processing during video playback.
Added new features to the rate control modes of the encoder, including:

A complexity vector log file
An API that allows real-time control of rate control
An API that allows forced I-frame insertion

Improved:

Redesigned encoder GUI. The new GUI is more accessible and simplifies overall usage.
DivX 3 compatibility. (There were no problems detected on any of the more than 60 hours of test content.)
Performance of Nth Pass strategy planning performance.

Fixed:

A bug that caused the quantizer to overshoot the bitrate following a transition to a complex scene.
A bug that limited the interframe change in quantizer to the ideal quantizer or plus or minus 2.
A bug in RGB32 to YUV conversion on Pentium 4 machines.
A minor bug that affected multiple CPU configuration.
A bug with the rate control video buffer verifier (VBV) that would enforce a "3 sec" max bitrate.
Several bugs that affected Nth Pass encoding strategy planning.
A bug that caused a different number of frames to be reported between different passes in VirtualDub.
A bug that caused motion vector (MV) reuse to be non-functional.
A bug that caused problems when MV reuse and psychovisual mode were used together.
Several bugs with the installer.
A bug that caused a crash when setting crop/resize values.

I'll have a look tonight Roll on XviD 1.0

Edge

[Kevin AMD]

I tried it to and I can really see the quality diference when I use all the options, but it is REALY slow to encode then.

It seems like it can better handle low bitrates now whit these extra algorithm and options.