How much memory would a 45 minute video take at 1080p? More than a gig?

[0sean0cooper0]

I want to know how many 45 minute videos, each at 1080p, I can store on my USB.

 

[Gam3r01]

There are alot of variables when it comes to file sizes like that, but a general "guess" is somewhere around 4-5GB per hour.