Yes, keyint=1 is what I used to test the concept with x265 in Handbrake. Unfortunately, even on an 18-core Intel i9, my encoding speed in Handbrake is, er, 5fps.
Yes, the filesize is large, but it's still a fraction of the size of ProRes and CineForm and it's much faster on the timeline. I mean, it's really fast, faster than any intermediate I've ever used in Premiere.
I guess if intra-only is not an option (which seems odd), what would be the recommendation for NvEnc encoding that could produce similar speed on the Premiere Pro timeline? I'm guessing it would need to follow the similar principle of trading filesize for speed but I'm cool with that.
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