If you are just uploading to youtube for normal viewing, then 30fps is fine. Hell, take a flight video of you flying a pattern with your 60fps camera and then switch it to 30 and play them back side by side. I will bet they will be really close. The props will look different, but the actual scenery will be virtually the same in the video. But don't take my word for it, go fly, get video and play it back.