If you are a software tester, you can bind the "Record Last 30 Seconds" hotkey. You use your software normally, and the moment a glitch occurs, you hit the hotkey. You now have a perfect video file of the error to send to the developers, without filling your hard drive with hours of footage of the software working correctly.
Interestingly, a common misspelling is "Screen Bite." This leads to a different, biological metaphor. In UX (User Experience) design, a "screen bite" refers to a tiny snippet of information designed to be consumed instantly—like a notification badge or a status bar icon. It is the UI equivalent of a "soundbite." screenbits