You can understand it but you can't interpret the value. How many movies is a CD? Or a DVD? Or a 1TB SSD? Or even Avatar in 3D (presumably not 1)? How many movies have even been released in total/last year?
The number awes non-tech savvy folk but it doesn't really inform them of anything. You could just as well write "more movies than you will ever need".
And besides that, I personally think that news should try to educate folk. I'm completely fine with a comparison in the article. But why in the headline?