Which file format renders the fastest?

I'm a student and I'm editing variety of file formats and codecs like .wmv, .mp4 (h.264/aac), .mpeg, .mov, and others...
What project settings should I use to render or export these videos fast?
Or, if that is not possible...
What file format should I convert all the videos before editing?
(Like if you are using Final Cut Pro, you convert it to Apple ProRes422 first before you edit)
Thanks guys!

We have two i5 laptops. I ran some tests with intermediate CODECs (Cineform and Matrox). In the case of HD footage it didn't help improve workflow or playback quality at all. The bottleneck is the architecture of a laptop - they just can't move the data around fast enough. CPU wasn't under much strain, GPU (Nvidia in our case) wasn't being taxed and 8GB of RAM should be plenty for basic editing. Ours fly editing DV and do OK with HDV but full HD is just beyond reach for more than a couple of streams or any kind of keying. We do have MXO2 Max units and also eSATA drives attached - the 1st gen i5 systems with Nvidia GPUs are plenty powerful for SD and simple HD jobs. Encoding the Matrox is fast to H.264 - which is great for BD, Vimeo, iPad etc. The reason you see variations in decoding and transcoding speed is that codecs vary in complexity. Many are designed for distribution rather than editing OR in the case of AVCHD (and other Mpeg4 variants) highly compressed to save space/bandwidth. As such they need a lot of computing grunt to decode them. Laptops definitely have limited architecture compared to most desktops. Think of them as having a good engine and tyres but a lousy gearbox.

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Edited by: Christoph Bergemann on Apr 8, 2010 8:49 PM
Edited by: Christoph Bergemann on Apr 8, 2010 8:50 PM
Edited by: Christoph Bergemann on Apr 8, 2010 8:54 PM

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