Turn Twitch VODs into clips

Paste a Twitch VOD or clip URL and get captioned vertical clips, the same path as a YouTube link.

Streams are long, so the scoring matters more here than anywhere else: the difference between a good tool and a bad one on a four hour VOD is entirely in which minutes it picks.

Stacked layouts come from the same pipeline, so a stream with a webcam in the corner is reframed as gameplay on top and camera below rather than cropped to one or the other.