Two different ways to get the same video
Manual screen capture means opening the site, starting a recorder such as OBS, QuickTime or Screen Studio, scrolling, and stopping. The video is a copy of what your monitor displayed.
An automated cloud renderer means pasting a URL into a service that loads the page in a headless browser on its servers. It reads the whole page, then builds each frame of the scroll mathematically and encodes the file. Nothing is captured from a screen at any point.


