One of the most common worries we hear from directors who haven’t shot virtual production before is about performance. “Won’t my actors feel lost on a green screen?” “Don’t they need to see the world to react to it?” “Aren’t LED stages a better fit if performance is the priority?” These are fair questions, and they come up often enough that we wanted to write down what we have learned at Vedri North Wales about directing on a green screen VP stage — what changes, what doesn’t, and how to give actors the conditions they need to do their best work.
You’re Not Asking Actors to Imagine — You’re Asking Them to Commit
The framing matters. Acting has always involved committing to a fictional reality. A theatre actor on a bare stage is not “imagining” the castle wall behind them; they are making decisions as if it is there. Film actors do this constantly — squibs that haven’t fired, doors that aren’t really locked, co-stars who have already gone home. Green screen is one more variation on that, not a different category of work.
What changes on a VP stage is the quality of information the actor has access to. On a location, the world is everywhere — peripheral vision, ambient sound, the grain of the ground underfoot. On green screen, you have to be deliberate about replacing that information. The good news is that on a real-time VP stage, you can. We can show actors the composite on a monitor between takes, dial in the right colour temperature on the lights so the world feels physically present in the room, and use specific reference objects in their eyelines instead of asking them to “look slightly up and to the left at the dragon.”
Pre-Visualisation Is the Cheapest Insurance You’ll Ever Buy
The single most useful thing a director can do before stepping onto our stage is build a previs of the scene — even a rough one. We can help with this. Because we are running an Unreal Engine pipeline driven by Mo-Sys camera tracking, the same scene file you shoot inside on the day can be loaded into Unreal a week before, with stand-in characters, blocked camera moves, and lighting roughed in. The director can scrub through it, change a lens, move the camera, try a new angle, and find the geography of the scene without burning a single second of stage time.
This is also where actors first meet the world. Sending a previs walk-through video to your lead the night before a shoot does more for performance than any amount of on-the-day explanation. They arrive having already pictured the room. Their eyelines are pre-baked. They know which way the sun is coming from.
Show Them the World Before They Step Onto It
When the cast arrives, we walk them through the virtual environment on a large monitor before any blocking happens. Not as a tech demo — as a location scout. Where are the doorways? What’s outside the window? Where would the sound of traffic be coming from? If the scene calls for the actor to glance at something off-camera, we point at the spot in the virtual set and put a piece of camera tape on the floor to mark it.
This sounds obvious, but the difference between an actor who has been told “the cliff is over there” and an actor who has stood next to the virtual cliff edge in the Unreal viewport is the difference between a guess and a grounded performance. We have seen scenes change shape entirely after a five-minute scout that costs nothing and would have been impossible on a green screen stage without real-time rendering attached to it.
Eyelines, Reference Objects, and Specific Cues
“Look at the spaceship” is a useless direction. “Look at the top of that C-stand, then track left to where Sam is standing” is a workable one. We keep a small kit of reference objects — tennis balls on poles, taped Xs on the floor, a couple of practical lights that match the colour of key elements in the virtual environment — and we use them shot by shot. If a character is supposed to react to a creature whose head sits eight feet up and to the left, we put something physical at eight feet up and to the left. The actor’s eyes find it without having to do mental geometry.
Practical lights matter more than people expect. If the virtual world has a fire on the actor’s left, we put a flicker box with the right colour temperature on the actor’s left, even if it is not the key source. The eye, the cheek, and the iris all pick up that warmth and the brain registers it as truth. Performance follows.
Rehearse the Camera, Not Just the Performance
One quiet advantage of shooting VP on a green screen stage is that camera moves can be rehearsed against the live composite without any of the constraints of a real location. We can fly the Pyxis through a wall that doesn’t exist yet, pull off a crane move in a corridor that is twelve feet wide on screen and twenty feet wide in the room, or repeat the same dolly track exactly because the StarTracker remembers where it was. That gives the actor consistency. The same beat lands on the same point in the move, take after take, which is what they need to refine a performance rather than just survive it.
It also gives the director something a location often denies: the freedom to ask for one more take from a different angle without losing the light. The light is whatever the engine says it is. The geography of the world is whatever the previs said it was. The actor can keep working without the day collapsing around them.
Watch the Composite as You Go
Because our render pipeline runs at sub-two-frame latency, the director and the actor can both see the composite live on a monitor. We have found that letting actors watch a take back, in the world, between setups changes how they pitch the next take. It is the same feedback loop a stage actor gets from an audience or a screen actor gets from a playback monitor — except now they can see themselves inside the scene instead of standing in front of a green wall.
This is not the same as letting them direct themselves. It is a tool, used carefully, and some actors prefer not to use it at all. But for performances that depend on physical relationship to the environment — chasing something, hiding from something, reacting to scale — a single live composite review can save an afternoon of trying to describe what isn’t yet there.
A Different Kind of Directing — Not a Worse One
Directing on a green screen VP stage is not directing with one hand tied behind your back. It is directing with a different set of tools. Some of those tools — previs you can walk through, repeatable camera moves, live composite playback, full creative control of light and weather — are tools no location offers at any budget. Others, like the easy ambient richness of a real place, you have to build deliberately rather than receive for free. The trade is worth understanding before you book a stage, but it is not a trade against performance. It is a trade for control.
If you are a director thinking about your first VP shoot and you are not sure how it will land with your cast, come and visit us. We are happy to walk a scene through with you on the stage with no crew, no clock, and no commitment, just to show you what the day actually feels like for the people standing in front of the camera.
