Wait. I'm not sure you quite understood what he posted. Your GoPro produces h.264 MP4 files, which are sub-optimal for editing just due to the fact that they're compressed to hell and gone. It can be somewhat CPU taxing to edit in it.
You can transcode it to anything, but you'll lose
some amount of quality each time you do that. And the question you have to answer is: to what format are you transcoding to, and will doing that
plus the time it takes to edit the file and then re-transcode it on export save you anything over just editing the MP4 raw?
Likely: it won't save you a lick of time. It'll more than likely add significant time to the entire process.
It's almost always better to edit natively from an
overall time perspective. That includes the time it takes to ingest the footage, the time it takes to edit it, and then the time it takes to export it. If you have to
also spend time with transcoding during the ingestion or editing phase, you'll end up with a longer project overall.
My suggestions:
- Upgrade your video card to a supported GTX680, or an unsupported GTX780. Either one will work in your Mac Pro, and give you a significant boost in performance, assuming that you:
- Change out to Adobe's Premiere Pro (either CS6 or CC). A quick file edit on either of them and the software will be able to take full advantage of the kick-ass video card you've just put into the machine.
- Double your RAM. Eight Gigs really isn't enough.
After you've done those 3 things, check the improvements in the project time. Does the software ingest, edit, and export the video any faster than before? I'll bet a dollar it does, and you've completed it without touching your CPU.