Hello, creators and storytellers!
If you’re into character animation or video production, Runway’s latest innovation, Act-One, is about to blow your mind. Imagine being able to create expressive character animations—complete with eye movements, subtle expressions, and natural pacing — using nothing but a single video and image. No complicated rigging, no motion capture setups, just your creativity and a regular camera. Let’s break down what makes Act-One so revolutionary and how it opens up new doors for digital storytellers everywhere.
What Exactly is Act-One?
Act-One is the latest addition to Runway’s Gen-3 Alpha, and it’s designed to transform how we think about character animation. Traditionally, turning an actor’s performance into a digital animation required a lot of equipment and time — think facial rigs, motion capture suits, and specialized software. Act-One changes all of that by allowing creators to animate characters just by capturing a single video of an actor’s performance. It preserves all the essential details of that performance — like eye movements, expressions, and timing — bringing digital characters to life in a way that feels genuine and effortless.
What’s particularly exciting? You can take any reference image of a character and sync it with a driving video to create an animation that looks natural and emotive, even if the character’s proportions differ from the actor. No more manual adjustments or complex pipelines — just plug in your reference, add a video, and let Act-One handle the rest!
How It Works: Simple Setup, Stunning Results
The beauty of Act-One is its simplicity. All you need is a basic video of an actor performing the actions or expressions you want to see in your character. Upload the video, select a character image, and Act-One does the rest. It reads the nuances of the performance, whether it’s a slight eyebrow raise or a soft smile, and applies those to the animated character.
This means you can get professional-level animation quality with minimal equipment. No more need for costly setups or motion-capture gear —you’re good to go with just a camera and an idea.

Real-World Applications
One of the first things people notice with Act-One is its potential for creative storytelling. Here are just a few ways you could use it:
∘ Cinematic Scenes: Want to add lifelike character animations to your indie film? Act-One can help you create expressive performances without requiring a big-budget setup.
∘ Marketing Content: Imagine creating a brand character that can “speak” directly to your audience with expressive, animated messages. Engaging, right?
∘ Social Media: For content creators, this tool makes it possible to quickly animate characters and create fresh, unique content that grabs attention.
And here’s an exciting twist: you can even use a single actor’s performance to animate multiple characters. Picture a dialogue scene where one person’s performance drives two characters with distinct looks and expressions — perfect for animated storytelling!
What’s Next for Act-One and You?
Act-One is now gradually rolling out, giving you the chance to experiment with this groundbreaking tool. It’s not only about cutting-edge technology — it’s about empowering storytellers to create in new, unrestricted ways. So, if you’ve ever dreamed of creating animated performances with minimal hassle, Act-One is here to make it happen.
What story will you tell? The possibilities are endless, and with tools like Act-One, the only limit is your imagination.




