Parameter reference

Everything lives on one Setup tab, plus Utilities. Listed here in panel order.

The action row

Parameter	Default	What it does
Output COP	—	Opens the borderless output window for the COP network wired into the input.
Close Output	—	Closes this node's window. Does nothing if it isn't open.
Status	(read-only)	Source resolution and channel count, then the measured time to read one frame and the frame rate that implies.
Blackout	Off	Blacks the output instantly without closing the window. Off is just as instant, and the image comes back current.

Status is the one to read when the frame rate disappoints. That ceiling is the COP network's own cook cost, not this node's — if it's lower than you want, the answer is COP resolution.

In Scene View and Both modes, Blackout hides the viewport window instead, which also stops it cooking.

Source

Parameter	Default	What it does
Source	Copernicus	Copernicus (the COP image) — read through our own sRGB shader, and the one to trust for grading. Scene View (3D only) — a borderless viewport framed on the COP canvas, reading no COP at all. Both (3D over the COP) — a reference view; its gamma is approximate, not exact sRGB.
Output Index	0	Which output of the display node to show. Most COP chains end in a single-output node, so this is almost always 0.
Max FPS	60	Upper limit on how often the COP is re-read. 0 means no limit — not "off", and not 1.
Test Pattern (toggle)	Off	Replaces the image with a built-in alignment pattern: grid, centre crosshair, aspect circle, colour bars, gamma ramp. Works with nothing wired.
Test Pattern (resolution)	Match COP	The pattern's resolution, which sets its aspect. Match COP uses the wired network's own resolution (1920×1080 when nothing is wired); the presets — 1920×1080, 3840×2160, 1600×1200, 1080×1080, 1080×1920 — are for aiming at the aspect the content will have.

The pattern goes through the same path as real content, so Fit, Zoom, Offset and the flips all apply to it. That's what makes it useful for aiming a projector rather than just proving the window opens.

Window

Parameter	Default	What it does
Screen	(primary)	Which display the window opens on. The list is the screens Qt can see right now, so a projector appears once Windows has it. It's also an indicator — middle-drag the window elsewhere and this updates to name where it landed.
Fullscreen	Off	Fills the screen. Off gives a window at exactly the COP's resolution, centred. Double-clicking the window toggles it too.
Always On Top	On	Keeps the window above everything else — what you want on a projector, and what you may not want while grading.
Auto-Open On Load	Off	Opens the window automatically when the scene loads, using the saved Screen and Fullscreen settings. Does nothing if there's no COP wired and no test pattern on.
Hide Cursor	Off	Hides the pointer over the output window. It still drags and clicks normally.

Image

Parameter	Default	What it does
Fit	Fit (letterbox)	Fit (letterbox) — the whole image, bars where the aspect differs. Fill (crop) — fills the screen, cropping the long axis. 1:1 pixels — one image pixel per screen pixel. Stretch — distorts to fill.
Smooth Scaling	On	Bilinear filtering when the image is scaled. Turn it off to see the real pixels — what you want when projecting a low-resolution source deliberately.
Offset	0, 0	Moves the image inside the window, in screen pixels. Right-dragging the image writes straight into this.
Zoom	1.0	Scales the image about the centre of the window, on top of the fit mode. The wheel writes here too.
Flip Horizontal	Off	Mirrors left to right — for rear projection.
Flip Vertical	Off	Mirrors top to bottom — for a ceiling-mounted projector.
Reset Position	—	Puts offset, zoom and both flips back to their defaults. Leaves the screen choice, the fit mode and the grade alone.

Everything in this section is saved with the scene, so a projector alignment survives a save and travels with the hip.

Grade

Parameter	Default	What it does
Exposure	1.0	Linear multiplier applied before the sRGB display transform.
Gamma Trim	1.0	Extra gamma on top of the sRGB display transform, for matching a projector that isn't sRGB. 1 is no trim.

Both are display trims. They change nothing upstream in the COP network — do the real grading there.

Utilities

Parameter	Default	What it does
Show Diagnostics	Off	Draws a readout in the bottom right of the output window: frame, source, resolution, measured read time, and the frames actually reaching the screen. Costs nothing when off.

Show Diagnostics updates every frame, which Status deliberately does not — that one is a parameter, so it's rounded and written only when it changes.

Underneath sit the window's input bindings, and links to the store page, these docs, the Discord and the YouTube channel.

Version signals

Every jvtools node carries these at the bottom of its parameter list:

Parameter	What it does
Current Version	The product version of the asset you have installed.
(update notice)	Appears when a newer version is available on the store.