Four-dimensional (4D) capture in Virtual Production

Four-dimensional (4D) capture is a Performance Capture term in filmmaking. In virtual production, the nuances of this term take on special meaning. Here, we break down the definition to give you a starting point.

View the full Virtual Production Glossary here »

Basic Definition:

What is Four-dimensional (4D) capture in virtual production?

It allows filmmakers to record performances from multiple angles over a period of time, while capturing details such as facial expressions and body movements that wouldn't be possible with traditional filming methods. 

Typically, four-dimensional (4d) capture involves using an array of cameras, lights, and sensors surrounding the subject in order to provide data for subsequent post-processing. This equipment can include robotic arms, motion capture suits, tracking systems, and other specialized hardware to help create a realistic three-dimensional environment. Additionally, software such as Autodesk’s MotionBuilder or Unity 3D may be used to process the captured data into usable formats. 

The importance of four-dimensional (4d) capture lies in its ability to recreate scenes virtually without needing physical sets. As such, it can be used to save money on production costs and decrease turnaround times significantly. Moreover, this technology provides unprecedented levels of control over how a scene appears on screen by allowing directors to edit it after the fact.  

When working with four-dimensional (4d) capture, some best practices should be followed. First, it's important to make sure all equipment is calibrated properly before shooting begins. Furthermore, technical accuracy is key; all synchronized components need to sync up perfectly in order for the final product to look natural. Finally, setting up markers around the stage will help with accurate camera placement and movement during recordings.