VideoTextRemover

The three modes are what make this useful: Select area repaints boxes you draw, Subtitles finds caption lines on its own, and All text also clears titles and timestamps. I like that the page is honest about limits, with a clear list of where it works best and where it leaves faint traces, such as large text or busy moving backgrounds. Since a 30 second clip takes 10 to 14 minutes, I would nudge people to test a few seconds of the free 30 first, because billing is per second of the part you pick.