Is there a site where you just upload a video and they enhance it for you?

Question

Is there a site where you just upload a video and they enhance it for you?

Answer 1

Enhance video? No - video, like audio, is as good as it gets when you capture it. If it started blurry, it will always be blurry. If you panned or zoomed too much or too fast so it looks bad, it is what it is.

Answer 2

You'll need an editor to do anything.  "Enhance" is a bit subjective - you can change the colour balance or the brightness and contrast, much as you can with digicam images, but that might not be an improvement.