ffmpeg exists, if you don't like it and can't use (don't want to learn) the shell and ffmpegs commands, there is OBS with all those features and more. I don't see the usecase.
FFmpeg and OBS are extremely powerful tools, but they require local installation, CLI knowledge, and manual configuration. Showesome is a Chrome extension that records screen, tab, or camera entirely in-browser, with built-in zoom/highlight effects. Lightweight, zero-install, and free — ideal for quick demos or tutorials without extra setup.