Screen Capture

Screen Capture is SignalRGB’s technology that analyzes what’s displayed on your monitor and translates it into dynamic RGB lighting effects. Whether you’re gaming, watching movies, or just browsing, Screen Capture creates an immersive ambient lighting experience that extends your screen’s content into your physical space.

This technology powers two major features in SignalRGB:

Screen Ambience Effects: General ambient lighting that mirrors your screen’s colors
Game Integration Effects: Specialized effects designed for specific games with custom event triggers

How It Works

Screen Capture analyzes your display at a configurable frame rate and processes the visual information to determine:

Dominant colors on different areas of your screen
Brightness and contrast levels
Color transitions and movement
Specific visual patterns (for Game Integration Effects)

This information is then translated into lighting commands sent to your RGB devices, creating an ambient glow that mirrors and extends your screen content into your room.

Screen Ambience Effects

Screen Ambience creates ambient lighting that reflects what’s on your screen, making your entire setup feel more immersive.

How it works:

Your screen is divided into zones to interpret display information and determine dominant colors
Those colors are mapped to corresponding devices in your layout based on their position in the canvas
The result is ambient lighting that mirrors your screen content

Common uses:

Gaming: Your RGB reacts to game environments and action
Movies and streaming: Immersive lighting that extends the cinematic experience
Music players with visualizers: Lighting that responds to on-screen visualizers like those in Spotify, Apple Music, or standalone visualization apps
General computer use: Subtle ambient lighting that adapts to what you’re doing

Game Integration Effects

Game Integration Effects take Screen Capture further with game-specific programming. These effects are built on top of Screen Ambience but add custom animations triggered by specific in-game events.

For more information, see How To Configure Game Integration Effects.

Requirements

Display Configuration:

Fullscreen Borderless mode (Windowed or Fullscreen modes won’t work)
HDR disabled (both in-game and Windows Display Settings)
Primary display (if using multiple monitors)

System Requirements:

Screen capture permissions enabled in Windows Privacy settings
SignalRGB running with proper permissions

Not Required:

Pro subscription for basic Screen Ambience (Pro required for Game Integration Effects)
Specific hardware — works with any SignalRGB-supported RGB device

Customization

Capture frame rate, monitor selection, and compatibility mode are adjustable in Settings > Application > Video. Some effects also allow brightness, color, and zone configuration from the Lighting tab.

Selecting Your Monitor Updated

If you use multiple monitors, you can choose which one SignalRGB captures from. Go to Settings > Application > Video and select your display from the Monitor Select dropdown. Screen Capture only works on your primary display — set the target monitor as your primary display in Windows Display Settings if needed.

Capture Region Updated

Some effects support a configurable capture region — a cropped area of the screen that the effect reads from instead of the full display. When a region is available, you can drag and resize it in the effect’s settings panel to focus on a specific part of your screen, such as the gameplay area only.

Compatibility Mode Updated

If Screen Capture is not detecting your screen content, enable Compatibility Mode in Settings > Application > Video. This uses an alternate capture method that works with some display configurations where the default method does not. Compatibility Mode may have slightly higher CPU usage.

Nvidia GPU Capture Updated

On systems with Nvidia GPUs, SignalRGB can use Nvidia’s screen capture API for improved compatibility. This is enabled automatically when available. If you have issues with capture on an Nvidia system, verify your GPU drivers are up to date.

USB Capture Devices Updated

If you are using a USB capture card (for example, to capture a console), SignalRGB can use that capture device as the source. Select the capture card as the input source in Settings > Application > Video > Monitor Select.

Performance

Screen Capture uses minimal CPU and GPU resources. If you notice performance impact, lowering the capture frame rate in Settings usually resolves it.

Privacy

Screen Capture processes color and brightness information locally — nothing is recorded, stored, or transmitted.