Booth craft organised in routes: timing, the room and the projector, and staying on air when something fails. Free, and written for the operator in the room.
Who writes this and how to read it.
Landing visuals on the beat and on the one of the bar.
Guessing the tempo by listening is a hard problem. Here is why it drifts worst exactly when you need it most.
Tempo is only the speed. Ableton Link adds a shared musical grid so visual beats and bar boundaries can land together.
Matching the tempo is only half of it. Visual changes have to land on the one of the bar the DJ is counting.
What happens between your output and the audience's eyes.
A cut that lands perfectly in the booth can look late forty metres away. It is not your timing: it is physics.
That recurring stutter is usually not your GPU. It is 50 Hz meeting 60 Hz.
Preparing for failure so the show stays on air.