Новый кодек XviD-1.0-Beta2, появился 5.12.03
XviD-1.0-Beta2 или на официального сайта http://www.xvid.org

Changes since 1.0.0 beta1 (Aloha):
xvidcore:
MPEG4 compliance is back (beta1 was missing the VOS header)
matrix quantization is finally thread safe
improved vop type decision
2pass2 plugin: min key interval was a misleading name. It's been renamed to kfthreshold. And as the kfthresholding behavior was a bit too aggressive, it's been disabled until we decide how it should behave w/o hurting quality
single plugin: fixed quant capping
interlacing artefacts fixed.

VFW fontend:
some misuses of xvidcore were fixed
min key frame widget renamed and moved to the 2pass panel

Debian package:
small errors in the control file reported and fixed by Nicolas Boos

Знатоки, скажите стоит ли его использовать или со старым оставаться?

Ну наверно надо сначало проверить, а потом давать результаты.
Я включал кодирование 5 минут фильма - вроде нормально. Интерфейс кодека упростили, наверно к лучшему...