Real-time Broadcast Compositing System

Reality Engine from Zero Density is the ultimate real-time broadcast compositing system enabling real-time visual effects pipelines featuring video I/O, keying, compositing and rendering in one single machine.  As the most photo-realistic real-time production solution, Reality Engine provides the tools to create the most immersive content possible and revolutionize story-telling in broadcasting, media and cinema industry.

Reality Engine uses NVidia Quadro GPUDirect technology for high performance video I/O in order to streamline real-time 4K UltraHD workflows.


TFO’s children show powered by three Reality Engines and Reality Keyer. Set designed by TFO’s in-house team. Images courtesy of TFO.

portal window reality engine


Reality Engine uses Unreal Engine by Epic Games, the most photo-realistic real-time game engine, as the 3D renderer. With the advanced real-time visual effects capabilities, Reality System ensures the most photo-realistic composite output possible.


Tracking Technology and Lens Calibration

Reality Engine, the broadcast compositing system supports industry standard mechanical and optical camera tracking systems. Reality can use the lens calibration data sent by the tracking devices.


Talent Tracking

When the talent tracking data acquired by Reality Engine, the engine positions the talent inside the virtual world in the correct position and depth. This technology automatically enables the creation of accurate reflections and refractions of the talent. Interaction between the real and physical is achieved with utmost realism thanks to Reality Engine’s industry first and only feature of compositing in 3D space. All process happens in one single machine.


TF1 2018 FIFA World Cup Russia broadcast utilizing green screen keying, portal window, and ceiling extension. Set designed by Dreamwall. Images courtesy of TF1.

compositing in 3d space

Compositing in 3D space

As a unique approach in the market, in Reality, green screen image is composited with graphics in 3D scene. This technique results in real-time realistic reflections and refractions of the physical objects and the people inside the green screen on top of the graphics. Also blooming effects and lens flares are composited over the real elements. All of the compositing is made in 16 bit floating point, for HDR precision.

ray tracing

Real-time Ray Tracing

Reality Engine takes advantage of latest powerful technologies from world’s most leading companies like Nvidia RTX GPU technology to produce high quality and realistic rendering possible in the industry today. Real-time ray tracing technology brings cinematic quality rendering capability to live production and provides realistic lighting, shadows and reflections.

portal window reality engine

Videowall and Portal Window

Reality Engine can feed your videowalls with high-resolution 3D graphics. By using camera tracking data, you can even convert your videowall into a portal to a virtual environment. Reality Engine System easily connects to the videowall through SDI, HDMI or display port. Combining portal window with ceiling extension, you will be able to have a virtual studio without green screen.


Astro’s FIFA World Cup 2022 broadcast powered by three Reality Engines, marked as their first-ever virtual studio production. Set designed by Astro’s in-house team. Images courtesy of Astro.

Hardware Specifications

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