I've been experiencing some very strange artifacts while playing back Xvid-encoded avi files I have downloaded. I often see a green sort of blur/pixilization during playback and also I've noticed that at times, when there is motion, portions of the video fail to update properly and have an effect similar to what one gets when first tuning to a digital cable channel which does not have frequent key frame transmissions.
My guess is that this may have something to do with lack of key frames, but I was hoping that there would be some method of telling the player to build the frame from the previous data.
Things I have tried
Codecs:
Xvid (latest)
ffdshow
Players:
Xvid;-) Player
Media Player Classic
Windows Media Player
VLC player
I've tried a number of different post-processing settings as well as various other scaling and rendering settings. The behavior occures in all players and with all settings.
I thought at first, that it might simply be a bad encoding of the file, but it seems to happen to frequently to be that.
Any advice would be appreciated

