I decided to get to the bottom of the issue I was having with my bsplayer today. I couldn’t play mp4 files properly for a long time and I suspected an outdated ffdshow version. I found out it’s probably something in the order I installed it instead because my friend had an even older version and it played mp4 fine. However! When I installed the new version of ffdshow I could play mp4 fine but now I had a different problem: can’t play any avi (divx, xvid) anymore. Good, Great! How bothersome. It appears the top checkbox was left unchecked and that solved the problem for me:
So Filter Management, check the box where it says “Allow intermediate filters”.