The Browser-based CRT Simulation is an interactive visual simulation that models key characteristics of CRT broadcast and consumer displays, with a focus on signal-path behaviour rather than cosmetic effects. It runs entirely in a standard web browser and requires no software installation or plugins.
Unlike stylised “retro” filters, this tool is designed to demonstrate how analogue display properties such as signal bandwidth, scan structure, beam response, interlace behaviour, and field cadence affect the appearance of a video signal. The simulation operates on decoded video data and applies controlled degradations and transformations that approximate real CRT display behaviour within the constraints of modern browser rendering.
The tool supports both live webcam input and local video files, allowing users to explore how different sources respond to CRT-like signal characteristics. Adjustable parameters include brightness and contrast, noise, horizontal bandwidth limitation, scanline thickness and spacing, chromatic aberration, beam bloom on highlights, chroma bleed (PAL/NTSC-style), interlace strength, vertical jitter, and colour gain controls. Presets allow complete parameter sets to be stored and recalled, enabling fast comparison between different simulated display profiles (for example, broadcast monitor versus consumer television).
Because video decoding and colour processing are handled by the browser, some effects—particularly chroma-related artefacts—may be subtle or source-dependent. This limitation is intentional and reflects the realities of browser-based signal processing rather than exaggerated visual distortion.
The Browser-based CRT Simulation is intended as a visual and educational reference, useful for understanding legacy display behaviour, demonstrating analogue video concepts, and exploring how signal-path limitations influence perceived image quality. It complements the analytical approach used across other VMA Broadcast tools, providing historical and conceptual context rather than acting as a colour-accurate emulator or grading tool.
Keyboard shortcuts are provided for efficient operation: F1 opens the settings panel, F2 opens the help page, and ESC closes open panels.
👉 Launch the Browser-based CRT Simulation:
