Video playback is one common case scenario where efficiency is crucial and where a lengthy battery life is an infrequently found godsend. But what you may not realize is that the video player itself, and the format your videos are encoded in, can also have an impact on power consumption.
We're in the second week of a YouTube copyright enforcement crackdown whose most visible effects have been on the video gaming community. Each day turns up a new example of a video getting thrown in YouTube jail on a ridiculous technicality. The situation seems to defy common sense, but we'll try to explain it in common language, anyway.