In reply to xplorer:
The best videos are those that tell a story.
Who's the climber? Why is he climbing? Why this route? Why today? What does it mean to him? What's he thinking at the crux? Can you get the viewer's pulse racing?
Agree that other angles are a must. This is difficult if you only have one camera (but smartphones and compact cameras have made it a lot easier.). You can also shoot some footage before and after the climb to splice in. Establishing shots, views. Get high. Get low. Walk for ten minutes in that direction to get a shot of the whole crag.
Music is a very personal thing. I tend to think less is more. For me, the best soundtrack is one that adds to the film without the viewer noticing it (but if you took it away, the viewer would complain).