Don’t video player controls seem dumb?
Desktop and web-based players alike allow the user to jump forwards or backwards by 5 or 10 seconds, or possibly speed up and slow down playback. These controls operate identically no matter what the user is watching – there’s no connection between the content of the video, and the controls.
DVDs were the first format I know of that allowed you to skip via chapters, but even something as basic as those coarse-grained content-aware controls aren’t available in things like YouTube videos today.
Here’s an idea for how to identify the salient points in a video that a user might want to skip to: the good news is that this could all be done automatically, and with very little overhead; I’ll leave the bad news to the end!