I would avoid WMV. Probably my choices would be in this order:
1) image sequence (JPG, TGA, PNG)
2) AVI with HuffYUV codec
3) AVI with DivX codec
Also, make sure the “use new method of loading AVIs” is NOT checked. That will use the older (but faster) AVI loading code, but doesn’t support DV AVIs (which you’re not using if you use my choices above).
Note that this setting doesn’t make a difference for images.
Also, in the OpenGL page of Preferences, try it with the “do not use texture RAM” option checked and unchecked — see which is faster. Easiest way to do this is to start a new project, add an image sequence or AVI, no emitters, and hit PLAY. See what framerate you get. Then change this setting and see if the framerate changes much.
Alan.
http://www.wondertouch.com