Would it convert 30fps to 24fps too?
I would suggest trying loiloscope, it only has basic features but is very very fast if you have the right type of graphics card.
I purchased MAGIX Video Pro X before I had a 5DII and initially it was hopeless with the 5DII files. After a visit from my brother in law who suggested that I remove all the codecs from my system and install the K-Lite Codec Pack and to my amazement Video Pro X absolutely flies. It is about 50 times faster than Adobe Premier or Sony Vegas (I downloaded the demos and tested them) All my tests have been on the raw files straight from the camera, no trans-coding, I have read that trans-coding speeds thing up? Down load the demos first.
K-Lite Codec Pack (free) http://www.codecguide.com/
Super LoiLoScope http://loilo.tv/product/1/desc/1
MAGIX Video Pro X http://www.magix.com/us/video-pro-x/-- hide signature --