[John Connor] "I do fair amount of editing with WMV files, AVI files. These files are usually converted into WMV or AVI from different format, such as MKV(h.264), or from fraps (AVI)."
The GPU does not accelerate decoding media.
[John Connor] "I was wondering if the gtx 480 would benefit me. I always use Premiere Pro and After Effects to edit (using dynamic link). I do all the previews and cuts in Premiere Pro, while effects on After Effects. I use effects from CC, lots of twitch. 3D camera movements. Multiple layers of colour correction (mojo, curves, exposure, tritone). Will I see a big difference using the GTX 480 (CUDA)?"
AE's GPU acceleration is limited to the new 3D ray-tracing renderer. Classic 3D rendering and effects such as you have listed will render on the CPU, not the GPU (Mojo may be an exception here, but if it is GPU acclerated, it's not likely dependent on CUDA).
Premiere's effects pipeline IS GPU-accelerated, so if you could do your color correction with Premiere's effects, you should see a noticeable difference with a CUDA card.
Check out Todd Kopriva's blog post
CUDA, OpenCL, Mercury Playback Engine, and Adobe Premiere Pro [link] for a full description of what features are hardware-accelerated by the GPU.
Walter Soyka
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