Runway Act-One
Generate expressive character performances with video inputs
Runway Act-One launched on October 23, 2024 with 274 votes, #140 of 5,185 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Runway Act-One is a generative tool that creates expressive character performances using video and voice inputs. Designed for animators and content creators, it generates both live-action and animated performances based on provided source material. The tool applies generative AI to streamline character animation production by translating performance inputs into detailed character movements and expressions.
written from the facts on this page · September 2026
From the sources
Act-One is a new state-of-the-art tool for generating expressive character performances using video and voice performances as inputs. It represents a significant step forward in using generative models for expressive live action and animated content.
At Runway, our mission is to build expressive and controllable tools for artists that can open new avenues for creative expression. Today, we're excited to release Act-One, a new state-of-the-art tool for generating expressive character performances inside Gen-3 Alpha.
Act-One can create compelling animations using video and voice performances as inputs. It represents a significant step forward in using generative models for expressive live action and animated content. Traditional pipelines for facial animation often involve complex, multi-step workflows. These can include motion capture equipment, multiple footage references, manual face rigging, among other techniques. The goal is to transpose an actor's performance into a 3D model suitable for an animation pipeline. The key challenge with traditional approaches lies in preserving emotion and nuance from the reference footage into the digital character. Our approach uses a completely different pipeline,…from runway.com
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