USEABILITY AND AESTHETICS
Now, we've got to say, we've seen some pretty bad video backgrounds out there. These tend to come from companies that don't understand that video backgrounds are supposed to complement whatever is on top of them, not overpower it. Be it text or video on top, the background must not fight for the viewer's attention. These companies usually have little or no professional video production experience so they just don't know what really works and what doesn't. So they go for lots of "flashy" backgrounds. Consequently they may end up with some animations that are cool in their own right, but that doesn't mean they'll work as a video background and you end up with a large percentage of unuseable backgrounds.
We're always a bit perplexed when we see collections that feature video backgrounds with every color in the spectrum and several layers of random shape motion blasting all over the place. This is to be avoided. Lots of motion and color can work in a few instances (nightclub dancefloors for example,) but rarely in most video productions. It's amazing how many collections out there are wall to wall with these types of flashy video backgrounds.
We believe subtlety is usually the best course of action when creating a background. If you're a "drag and drop" person (you use the backgrounds just as they are with no tweaking) you'll enjoy subtle video backgrounds that work great "out of the box."
Now, there are a few backgrounds in our collection aimed at advanced users that can take somewhat "wacky" video backgrounds and do really cool things with them by manipulating them and combining them with other elements. As you get more skilled, you probably will too. These "wacky" backgrounds are usually not intended to be dropped behind your text right out of the box, but rather manipulated and incorporated into a new motion graphics piece.