Video
IMAG — Image Magnification
01 — Definition
The live camera relay of the stage onto large screens, so an audience far from the platform can see faces and detail. Cameras feed a switcher, and the programme feed goes to projectors or LED walls beside or above the stage. The constraint that governs everything is latency: the picture and its own PA audio have to stay close enough that lips and sound don't visibly drift — the processing chain has to be kept short.
02 — In the field
Keep the IMAG chain's latency low, and check lip-sync from the audience seats, not at FOH. If the screen visibly lags the live sound, shorten the video path or delay the PA to match — a long scaler/processor chain is the usual culprit.