Nikon D90 Video Quality Problem?

Well my friends and I skateboard and upload videos of it on youtube and I usually take pictures, bu when i record a video, after i put it up it says it'll only go to 480p however in the D90 menu, I have selected the 720p option. Anyone with the same problem?

I've not had this problem with my Nikon D90, but if I did, I'd research these D90 video users.

I suspect it is your computer s/w that is having the problem.