你用的MPEG-4 Video CODEC 是 DivX , XviD, Microsoft MPEG-4 Video Codec 還是其它 ?
版本是 ?

DivX: 有 DivX, DivX Pro
最新版本是 DivX 5.2.1, DivX Pro 5.2.1
www.divx.com
http://www.divx.com/divx/divxpro/versions/
http://www.divx.com/divx/windows/versions/
http://www.divx.com/divx/divxpro/faqs/
DivX 5.1.1 encoder is up to 112% faster (standard mode) than 5.1 (up to 30% faster than 5.05).
DivX Pro for Windows is the advanced version of the DivX codec we originally designed for our professional users. It offers universal playback of all DivX® content ever created, unmatched video compression ratios (30% better than the DivX codec), and fast encoding speeds.
意思是:
DivX Pro 5.2.1 > DivX 5.2.1 > DivX 5.1.1 > DivX 5.1 > DivX 5.05


XviD 版本有很多：
Nic's XviD 版本:
http://nic.dnsalias.com/xvid.html
Koepi's XviD 版本:
http://koepi.roeder.goe.net/xvid.shtml
ffdshow 版本:
http://sourceforge.net/project/show...?group_id=53761