Act-Two

byRunway

Transfer expressive human performance, dialogue lip-sync, and nuanced upper-body gestures directly onto custom character art and video

How Runway Act-Two works

Upload your character asset, record your driving performance on any standard camera, and calibrate expression intensity to generate fluid character video.

runway act two workflow input

Provide your character asset

Upload a front or three-quarter image or video of your character, keeping hands and upper body in frame for full performance tracking.

runway act two workflow direction

Record driving performance footage

Supply a clear 3 to 30 second webcam or camera clip of an actor delivering speech, head turns, and hand gestures.

runway act two workflow model and generated output

Tune expression intensity and render

Adjust the expression intensity slider from subtle realism to theatrical animation, toggle body control, and generate your video.

What Runway Act-Two is good at

Explore full-body gesture tracking, intensity scaling, and dynamic environmental lighting designed for rapid narrative animation.

Full-Body Gesture Transfer

Map expressive hand movement, torso posture, and head turns directly from driving reference footage onto stylized 2D illustrations or 3D renders with automatic environmental lighting.

Fine-Grained Expression Scaling

Control emotional delivery on a calibrated 1 to 5 intensity scale, tailoring micro-expressions from understated photorealism to bold, exaggerated animation.

Dynamic Secondary Motion

Automatically generate cohesive secondary movement across hair, clothing, and cast shadows that dynamically adjust to the character's rotational momentum.

Flexible Duration Window

Animate sequences ranging from 3 to 30 seconds using single-camera driving clips without multi-rig motion capture suits or manual facial rigging.

Made with Runway Act-Two

Discover how creators map human performance across 3D renders, physical sculptures, 2D sketches, and stylized digital avatars.

Precision performance mapping on polished metallic characters

Textured puppet character with expressive speech delivery

Articulated wooden figure animated from webcam reference

Dynamic 2D charcoal sketch brought to life with full dialogue capture

Stylized low-poly avatar driven by mobile camera video

What people build with Runway Act-Two

See how directors, game developers, fashion studios, and animators use performance transfer to accelerate character production.

Cinematic Narrative Pre-Visualization

01

Block complex character dialogues and emotional beats in pre-production without staging multi-actor motion capture sessions.

Indie Game Character Prototyping

02

Test dialogue animations, NPC idle gestures, and narrative cutscenes quickly by recording driving performances straight from a webcam.

High-Fashion Lookbook Motion

03

Bring static editorial portraits and avant-garde character concepts to life with fluid posture, subtle head tilts, and wardrobe physics.

Brand Commercials and Virtual Avatars

04

Produce talking-head brand ambassadors, digital mascots, and social video hosts matching human vocal cadence and hand gestures.

Animated Storyboarding and Comic Dubs

05

Transform static 2D illustrations and graphic novel panels into moving dialogue sequences with synchronized speech and expressive acting.

Runway Act-Two specs

Plans and credits
Inputs
Character Video (video), Character Image (image), Reference Video (video)
Output
video
Aspect ratios
1280:720 Horizontal, 720:1280 Vertical, 960:960 Square, 1104:832 Horizontal, 832:1104 Vertical, 1584:672 Landscape
Cost
69–4,133 credits per run

Frequently Asked Questions

You need a driving reference video and either a character image or character video. The reference video should be a 3 to 30-second clip of an actor with clearly visible facial features and upper body under even lighting. Your character reference can be a 2D illustration, 3D render, clay model, or photorealistic image.

Expression Intensity is a control from 1 to 5 that dictates how dramatically facial movements transfer. Lower settings (1 or 2) are recommended for photorealistic humans to keep lip-sync natural and prevent skin distortion. Higher settings (4 or 5) suit cartoon characters, monsters, or stylized avatars where exaggerated expressions look natural.

Enable Body Control when your character asset and driving video both clearly show the upper torso and hands at rest. This transfers hand gestures, posture shifts, and head movement. If your character asset is a tight headshot without visible hands, keep Body Control disabled to avoid distorted hand generation.

Avoid fast action choreography, martial arts, combat sequences, and scenes requiring characters to hold or interact with handheld props like phones or weapons. Act-Two is designed for dialogue and upper-body gestures; rapid physical movements or full sideways profile angles cause tracking loss.

Driving reference videos must run between 3 and 30 seconds in duration. Act-Two supports six native aspect ratios: 1280:720 horizontal, 720:1280 vertical, 960:960 square, 1104:832 horizontal, 832:1104 vertical, and 1584:672 widescreen landscape.

Try Runway Act-Two on Fuser

Transfer expressive human performance, dialogue lip-sync, and nuanced upper-body gestures directly onto custom character art and video