A way to create demo from UI components: create video in the browser directly, so the recordings can be changed, replayed or its speed can be updated.

The reason I will never go back: it is code, so it is repeatable. A stat is wrong? Change a number and rerun. A beat feels rushed? Nudge one timestamp. Want the same demo for four different products? Loop over four pages and render them all while you make coffee. There is no take to redo and no quality lost to another export.

It seems what the UI does can be a browser extension.