You can't send any videos from a blackbery (sucks i know) you will have to connect your phone to the computer and transfer it to your desktop, and then upload it from your desktop to facebook.
you can upload photos using the Facebook application on your Blackberry phone, you cannot upload videos with the app. Or maybe you deleted or disabled the app on your phone. Often, the Blackberry Facebook app is a major resource hog slowing down your phone's performance and causing memory issues. If you want to share your videos on Facebook or you don't have the app, you can still upload photos and videos to Facebook from your Blackberry using a personalized upload email address.