Apple Silicon, Rosetta, and the M1/M2/M3 Chip
TechSmith Snagit Mac 2021.3.0 and later is now a Universal app that fully supports Apple Silicon. From the menu bar, select Snagit > Check for Updates to install the latest version.
Prior versions of TechSmith Snagit do not natively support Apple Silicon, but will work via Rosetta on Macs with the M1/M2/M3 Chip.
In order to record System Audio on an M1/M2/M3 chip, please follow the steps here, unless you're running macOS Ventura (13) or later. System audio is built-into macOS 13 or later.