M: What is the term for when a amateur video has been processed so that it’s stabilized? I don’t mean the usual version of stabilized – I mean, when a video was shaky enough that the processed version has large amounts of surrounding black space, with the video itself being rotated or otherwise adjusted so that it’s visually easier to track

G: The term you're looking for is "deshake with cropping disabled" or simply "unstabilized deshake."

Most video stabilization tools, like those in After Effects, DaVinci Resolve, or VirtualDub with the Deshaker plugin, have an option to either crop and zoom the stabilized footage or leave the full frame visible. When cropping is disabled, the original shaky frame is preserved, and the video moves within it, creating that large black border effect.

This effect is often seen in raw deshake previews or when analyzing camera motion.