Mostly an FYI about current limitations for GPU decode acceleration (nv and ati) on h.264 encoding settings:

I'm pretty disappointed actually... it's apparently very limited as to what options you can use when encoding h.264 that will actually make use of GPU acceleration--at least currently.

These shouldn't impact most commercial BDs, but the requirements are inflexible if you are encoding your own h.264 files, making it impossible to optimize certain aspects for example.

Maybe things will improve in future driver releases.