GrandVJ

GrandVJ is a real-time video mixing and playback software developed by AV Stumpfl, an Austrian company known for its audiovisual hardware and software used in live events. The software is designed for VJs and live visual designers to create, mix, and output dynamic visuals during performances and installations. GrandVJ supports multiple video and image inputs, a library of visual effects, and real-time compositing across multiple layers, enabling performers to mix media in response to music and live cues.

Key capabilities include multi-output support for projectors, LED walls, and other displays, which makes it suitable for large-scale video walls and immersive environments. It provides clip-based playback and a timeline or cue-based workflow, with real-time rendering that leverages the host computer’s GPU. The software includes mapping and warping tools to align visuals with irregular surfaces and curved screens, as well as support for 3D transformations for spatial effects.

External control is possible through MIDI controllers and other show-control devices, allowing hands-on triggering, crossfader-style mixing, and synchronized playback with lighting and other systems. GrandVJ integrates with other AV Stumpfl products and is commonly used within standard live production workflows alongside media servers, lighting consoles, and audio systems.

Licensing is commercial, with updates and support provided by AV Stumpfl. The software has been used in clubs, festivals, corporate events, and installations worldwide, valued for its real-time performance capabilities and stability in demanding live environments.