u guys want to convert what?
If u want rm, rmvb, mkv ( as long as it's not avi format) convert to avi
Open notepad type
CODE
DirectShowSource("sourcepath.rmvb", fps=23.976)
lanczosresize(320,240)
Save it as .avs
Load avs file to virtualdub. And selecting compressor, config the kbitrate for your conversion.
Remember, if u are converting rmvb, the audio format is wave, so the file will be very big. Best is u put another code tag
killaudio(). Have to separate convert the audio.
I think you guys better don't use. I'm using it cos' i want a better quality for my mobile phone. The above is a simple avs script i used. please go
http://www.avisynth.org/ for more details. Recently i started using avisynth. Quite interesting. I got no problem converting H246/AVC codec in mkv, by using avs script then load into vdub to convert to avi.

Kinda tedious process.
If wants some easiest, go dl
Super converter. It's free, but the process is quite slow