Runway Act One

Runway Act One is a performance capture tool from Runway that uses AI to transfer human facial expressions and body movements to AI-generated or digital characters without requiring specialized motion capture equipment. The technology democratizes performance-driven animation that previously required expensive equipment and post-production work.

Act One's facial performance capture analyzes video recordings of human actors and maps the subtle facial expressions, micro-expressions, and lip movements to digital character rigs. The AI preserves the nuanced emotional performance of the actor while adapting it to the proportions and style of the target character.

The platform's body movement transfer extends beyond facial capture to include body movements and gestures, creating characters that move with the natural, fluid quality of human performance rather than mechanically animated motion. This full-body performance capture from standard video enables more accessible character animation.

Act One's workflow integrates with standard 3D animation pipelines, outputting character animation data in formats compatible with major 3D animation software. This compatibility allows studios to incorporate Act One-captured performances into their existing production workflows.

For animation studios and film productions that want to bring digital characters to life with authentic human performance but can't justify the cost and complexity of traditional motion capture setups, Act One provides an accessible alternative that captures the essential performance quality from standard video recordings.