Yeah but their problem was editing in 1080P causes problems. Even if they open it in 720P it still has to process and downscale from 1080P. They're better off just recording and editing in 720P. Similar goes for exporting a 1080p file into 720P it will take a little longer due to downscaling.
I also should have asked what the PC specs were and what software was being used. Because if it's Premiere, you usually need a CUDA hack if you're using an Nvidia Card that's below the x70 series. Even then, it doesn't utilise CUDA properly.
Exactly. It doesn't matter what Premiere resizes it as if the MP4 file itself is 1080p. I needed to covert the 1080p video to 720p and I was able to do that with Handbrake.
I don't know anything about CUDA or cards or any computer spec stuff. My computer is a HP pavilion dv6. It can edit in 1080p but it just takes a lot longer than it should and its frustrating because I have to wait for the preview screen to catchup to where I am on my timeline. That slight delay is a killer when editing. I make about 50-80 different cuts so I can't afford to have it lag.