How to tint a car's windows so the driver cannot be seen

Last updated 2026-09-10 · 8 min read

What is the short version?

Darkening a car window is easy and looks like a black rectangle stuck to the car. What makes it read as tinted glass is that the surface still reflects the sky while the interior disappears behind it — and that the mask moves exactly with the window rather than nearly with it.

1. Go to Vizard Agent with the shot.
2. Say the driver must not be identifiable.
3. Say it should look like tinted glass, not paint.

What do you need before you start?

The shot and a clear standard for what "not visible" means. There is a difference between a silhouette you cannot identify and no sign of anyone at all, and the second costs more of the shot's realism than the first.

• The clip with the car in it.
• Who must not be identifiable. Driver, passengers, both.
• How complete. No silhouette, or just not recognisable.
• Which windows. Side, rear, windscreen.
• Whether reflections may go. Usually they should stay.

What do you type into Vizard Agent?

Ask for the look as well as the effect. "Darken the windows" gets you darkness; adding "so it looks like real tint, with the reflections still on the glass" tells Vizard Agent that the surface has to survive the treatment.

Prompt

Variants worth knowing:

• "Like proper tinted glass." Rules out a flat fill.
• "Nobody can tell there is anyone." The standard you want.
• "It should not shake." The fault that appears in motion.

What does Vizard Agent actually do?

Here is the order Vizard Agent worked in on a real shot of a moving car whose driver had to be hidden. The first attempt works and looks wrong, and everything after it is about making the treatment behave like glass.

1. Tracks the side windows across the whole clip.
2. Checks the mask's accuracy against the frames.
3. Confirms only the glass is selected and nothing around it.
4. Lays a dark semi-transparent film over the windows.
5. Checks how the darkening moves and whether the driver still shows.
6. Builds a natural tint that keeps the highlights on the glass.
7. Checks how natural it looks in motion rather than on a still.
8. Hides the interior detail while keeping the external reflections.
9. Checks the driver's silhouette has gone with the reflections intact.
10. Isolates the silhouette for targeted darkening where it persists.
11. Checks that mask specifically before applying it.
12. Feathers the tint's edges and strengthens the privacy.
13. Smooths the mask's movement from one frame to the next.
14. Checks the edges on adjacent frames for jitter.

Step eight is the difference between tint and paint. A window that reflects nothing is not glass, so the treatment has to remove what is behind the surface while leaving what is on it — and that distinction is what the eye is actually reading.

Step three is a small guard worth having. A mask that creeps a few pixels past the window takes the door frame or the pillar with it, and a treatment that darkens part of the bodywork reads as a mistake far faster than one that misses a sliver of glass.

Step thirteen is the fault nobody sees on a still. A mask calculated per frame is very slightly different in each one, which shows up as a shimmer along the window edge the moment the car moves, and it has to be smoothed across frames rather than tightened within them.

What does the result look like?

A car with tinted windows: dark enough that nobody inside can be made out, still glassy enough to catch the sky, with edges that sit exactly on the window frame and do not crawl as the car drives through the shot.

Nobody watching thinks anything was done to it.

When does this not work well?

Glass that is barely visible cannot be treated convincingly. A shot where the window is a thin sliver, where the reflections are blown out, or where the camera moves fast enough to blur the frame leaves the mask very little to hold onto.

• Very small windows in frame. The mask has nothing to track.
• Fast camera movement. Tracking loses the edges.
• Reflections already blown out. There is nothing to keep.
• A windscreen head-on. Much harder than a side window.
• Legal anonymisation. This is a look, not a guarantee.

How do you fix a result that came back wrong?

Say what you can still see and whether it is worse in motion. Vizard Agent keeps the window track and the masks it built, so a fix strengthens or feathers what is there rather than starting the tracking again.

• "I can still see him." The silhouette isolated and darkened.
• "It looks painted on." Reflections restored to the surface.
• "The edges crawl." The mask smoothed across frames.
• "You can see the join." Edges feathered further.

How does Vizard Agent compare to doing it yourself?

By hand this is a dark shape tracked onto the window, judged on a paused frame where it looks fine. The reflections go with it, so the car ends up with two black holes in the side, and the jitter only appears once it is playing.

Common questions

Will it look like real tint? That is the aim. Vizard Agent keeps the reflections on the glass.

Can it hide passengers too? Yes. Name which windows and Vizard Agent treats them.

What about the windscreen? Harder head-on, but Vizard Agent will try and show you.

Will it shake when the car moves? Not once smoothed. Vizard Agent checks adjacent frames.

Can it darken just the person? Yes. Vizard Agent can isolate the silhouette specifically.

Does the rest of the car change? No. Vizard Agent confirms only the glass is selected.

Is this enough to anonymise someone legally? No. What Vizard Agent applies is a visual treatment, not a legal guarantee.

Can it match a real tint level? Yes. Say how dark and Vizard Agent works to it.

What if the window is reflective already? Better — Vizard Agent then has more surface to keep.

Can it do this on several shots? Yes. Vizard Agent builds the track per shot.

Will it work on a still photo? Yes, and Vizard Agent finds it much simpler on a still.

Can it remove a reflection instead? A different job, but yes — Vizard Agent can do that too.

Does the file get re-encoded? Only the affected section unless you need otherwise.

Why keep the reflections? Because a surface that reflects nothing is not read as glass, and the moment it stops being glass the treatment becomes visible.