English isn't my mother language, so I don't understand the term "Broadcast bumper" in the below phrase:
Fast handling of multiple graphic and video layers in real-time preview is another example of Aura's productivity advantage. Given a multi-layered broadcast bumper and a client with a need for a quick change, an Aura user can update the order of the layers in seconds with a few simple and quick click-and-drag movements, see the result instantly, and be ready right then to go to tape or broadcast. With most other software a user would need twenty minutes to make the change and have the rendered result ready to use.
The broadcast bumper is the animation/transition used to either go from one story to another or going to/coming back from commercial. You can see the best examples on FOX news when they go to commercial or quickly change stories. The graphics change and introduce the new content. Regular television stations also do this when coming back from commercial---for example you may see a TBS spot about other shows that air on the channel just before the scheduled program returns from commercial. That is a broadcast bumper.