Version 5.1.1 released 2003-11-19

New:

Support for generic MP4 FourCC codes which can be enabled/disabled in the DirectShow configuration dialog box.

Changed:

Psychovisual modeling disabled by default.
Feedback mode disabled by default.
Feedback mode can now be globally disabled when running.
All frames are now displayed in feedback windows.
Cosmetic GUI changes have been made to avoid confusion when using MV reuse and specific performance modes.
Deinterlacing is back in the Standard codec.
Added bottom field first encoding.
Smoother DivX logo fade.

Fixed:

Encoder fixes:

DivX 5.1.1 encoder is up to 112% faster (standard mode) than 5.1 (up to 30% faster than 5.05).
Standard mode is 105% faster than 5.1.
Slow mode is 67% faster than 5.1.
Slowest mode is 79% faster than 5.1.
The Quality produced by "Fastest" has been significantly improved.
Blinking bottom line in "fastest" mode fixed.
Fixed issues with capture applications.
Various Cosmetic CLI fixes.
New CLI option "-tff" for "top field first".

Decoder fixes:
Resolved a severe performance hit when using the Deringing mode in Postprocessing.
DirectShow filter property page had a cosmetic issue caused by using large fonts (120dpi).
Avoids buffer overruns with extremely small picture sizes (less than 80x32).
Fixed a bug caused by "Auto Post-processing" and SMP/HyperThreading CPUs.
Issue with n B frames and Deblocking fixed.

http://download.divx.com/divx/DivXPro511Bundle.exe