Audiovisual Dictionary Get to know the terms of the audiovisual ecosystem TODAS0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ GSM (Good Shot Mark) Sony system that was used in the past to mark the good shots of a camera recording. Our Services TV Production CentresTeleportRadio Production SystemsPlay Out BACK TO INDEX GSM (Good Shot Mark) ← Solid State Recorder HD-SDI →