Inside the Gallery: How a Multi-Camera Show Is Cut Live

By the time a vision mixer sits down at the desk, most of the switching has already been decided. I build the signal path first: each camera feed is labelled, checked at the source and again at the switcher, and every input is given a name the whole gallery uses. If the director says camera three, nobody should have to wonder which monitor that is.

Early autumn brings a run of indoor concerts and studio programmes, and the setup before them follows a pattern. We confirm the sync reference, check that every cable run is tested and walk the tally lights through every input. It is dull work that nobody in the audience sees, and it is the reason a cut lands on the right picture.

I also sit with the vision mixer for a few minutes before rehearsal to agree how the desk is laid out. Hannah, for instance, likes her most-used camera on the left of the bus so her hand never travels far. Small preferences like that are written into the setup notes for each show.

• Name every input clearly
• Test tally lights on each camera
• Agree the desk layout with the mixer

A cut is the end of a short conversation. The director calls the shot, the vision mixer repeats it or acknowledges it, and camera operators hear what is coming next on their own channel. I look after that comms system, because a gallery that cannot hear itself cannot switch cleanly.

We keep talkback tidy on purpose. The director speaks in short, fixed phrases: ready camera two, take two, then the next shot is lined up. Camera operators do not chat on the open channel during a show. When someone needs to ask a question, they wait for a pause or use a separate line.

On a fast song with sixty or more cuts, that discipline matters more than any single piece of equipment. A missed word means a late cut, and a late cut is visible. Rehearsing the phrases is as much a part of preparation as framing the shots.

A good mixer cuts on the beat of the performance, not on a timer. In rehearsal the vision mixer listens to the arrangement and notes where a change of angle feels natural: a chorus, a drum fill, a singer stepping forward. Those moments are marked in the script or on the rundown so the director can call them in advance.

Not every show has a clear structure to follow. A panel programme or a studio discussion moves with the conversation, and the mixer has to anticipate who speaks next. Hannah watches body language, a breath taken or a hand raised, and has the next camera ready a beat before the voice arrives.

I watch the preview monitors beside her, looking for anything that would spoil a cut: a boom pole drifting into frame, a camera slightly out of focus, a dark shot that looks too harsh against the one before. If I see a problem, I flag it on talkback so the camera operator can fix it before that angle goes to air.

• Mark musical changes on the rundown
• Prepare the next shot before it is called
• Flag framing problems early

Most cuts are plain cuts. A dissolve or a wipe is used sparingly and only when the show calls for it. The difficulty is not choosing the effect, it is choosing the moment, and keeping the picture steady while doing it.

Timing is judged against the programme monitor, not the preview. There is a slight delay between pressing the button and seeing the result, and an experienced mixer learns to press fractionally early. We check that delay in the setup so nobody has to guess.

Matching levels matters too. If one camera is graded warmer than another, every cut between them draws the eye. Before a show I compare the cameras on the same scene and adjust until the images sit together, so the audience notices the performance and not the switching.

Live work means problems turn up at the worst time. A camera loses its feed, a radio mic drops out, a lighting change leaves one angle too dark to use. The first rule in the gallery is that the show keeps moving. The vision mixer moves to another camera, the director rearranges the shots, and the fault is fixed behind the scenes.

My part is to find the cause quickly and quietly. I keep spare cables, a spare feed path and a plan for each critical camera, so a failure means a swap and not a search. The rest of the crew hears only a short note on talkback, never a running commentary.

Afterwards we review what happened. Not to assign blame, but to adjust the setup for the next show: a more secure connector, a clearer instruction, a different position for a camera that kept getting bumped.

• Keep the show moving first
• Hold spare feeds ready for key cameras
• Review every fault after the show

The best result of all this work is that nobody notices it. Viewers follow the song, the speaker or the match without thinking about who chose each angle. When switching is working, it simply feels like watching the event itself, with a little more clarity than being in the room.

That is what we aim for with every show. The preparation, the clear talkback, the rehearsed timing and the calm response to faults all point at one outcome: pictures that arrive on time and in the right order.

If you are planning a live production this autumn and want to know how many cameras and what kind of gallery it would need, it is worth talking through the running order with us early. Most of the decisions that make a show smooth are made well before the day.