Systems
Why did it look fine in rehearsal and fail live?
Because live conditions changed one of the hidden variables and the system had no margin for it.
Diagnostic pageLuma / 0–100 IRE
RGB paradeChannel separation
VectorscopeChrominance
Incident trace: slightly looser spread, controlled irregularity.
01//Likely causes
Cause
Different room fill or audience presence changing perceived contrast.
Cause
Late asset swaps or playback changes.
Cause
Lighting cues altered after rehearsal.
Cause
No stable reference workflow, so small changes cascaded everywhere.
02//Check first
First move
What changed after rehearsal
First move
Asset versioning
First move
Room conditions
First move
Reference monitoring discipline