xvid and avisynth

[prut]

I use bsplayer often to check avisynth scripts. When I open a divx or mpeg1/2 file this gives no problems. However, when I try to open an xvid movie using avisource I only get sound. Mediaplayer 6.4 opens the same script without any problems. I tried it with only the line avisource("moviename.avi"). BSplayer doesn't seem to find the xvid codec when a movie is opened this way.