It's a bit embarrassing - I used to encode from QT (either animation or MJPEG A codecs) to MsMPEG4v2 quite a lot; i haven't done it in quite a few months, and now i can't seem to do it at all, no matter what settings i choose! not sure if it's the new version or I've just forgotten a trick somewhere

"Error while opening codec for stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height"

I remember I used to have problems if the pixel sizes weren't multiples of 4 (or was it 16?), but all my current input (and output) if fine in that regard.

anyone have any insight?