Shotcraft
Video generation

Runway Act-Two

Runway Act-Two is a video generation model from Runway.

A video generation model by Runway · read 2026-08-14 · sourcing medium

Up to
30 seconds
Resolution
720p
Aspect ratios
1280:720, 1584:672, 1104:832, 720:1280
Weights
Not released
API
Yes
Commercial use
Not established

Performance transfer model. You supply a character as an image or video plus a driving reference video of a person performing, and Act-Two maps that performance onto the character. Exposed via a dedicated /v1/character_performance endpoint; added to the API on 2025-07-21.

Commercial use — Not established

The research notes for this model record other terms but do not state a commercial-use position, and no licence page was retrieved, so it is not established here. Check the vendor's own terms.

The licence notes recorded during research were read for a commercial-use position and did not state one. Read the licence before you rely on any of this. Nothing on this page is legal advice, and this site does not tell you a model is cleared for commercial use.

Specification

Vendor figures, read 2026-08-14Read from Runway's own documentation on 2026-08-14. Vendors change these between model versions without announcing it, so check theirs before you commit a shot to a number. Sourcing for this entry is mixed. Some fields came from pages we retrieved, others could not be confirmed and are left blank. Check the vendor's current documentation

What it takes in
video, image
What it makes
video
Maximum duration
30 seconds
Maximum resolution
720p
Aspect ratios
1280:720, 1584:672, 1104:832, 720:1280, 832:1104, 960:960
Controls
reference-character-consistency, image-to-video
Weights
Not released
API
Yes
Pricing
credit-based; API 5 credits per second at $0.01 per credit ($0.05/sec)
Released or updated
2025-07-21

Strengths

  • Driving performance videos of 3-30 seconds, longer than most generative clips
  • Accepts either a still image or a video as the character
  • Cheap at $0.05/sec
  • Works from ordinary phone-shot performance footage

Weaknesses

  • Requires a clearly visible face throughout the character input
  • Duration is bounded by the reference video rather than freely chosen
  • No documented resolution above the 1280:720 ratio tier
  • Not a general animation tool

Best for

Where the sources disagree

Recorded rather than resolved. Picking the tidier number would hide the fact that the vendor's own pages do not agree.

What to understand before using it

Explainers naming the mechanisms this model's own documentation mentions.

MCP servers that front Runway

Servers in the media MCP directory whose own description or homepage names this vendor. Absence of a server here is not evidence that none exists: most publish no tool list at all.

9 further servers name Runway with lower confidence and are not listed, because a server naming a vendor may be using it for text rather than media.

See it from the vendor

Shotcraft hosts no sample output. Judging a model means watching its own showreel with your own eyes, and a clip re-hosted here would be a clip we chose.

Nearby in the directory

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Runway's current flagship generation model, producing video from text alone or from a starting image. Announced 2025-12-01 for the web app and added t

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Runway Gen-4 Aleph

First-generation Aleph video-to-video editing model, which introduced prompt-driven in-context editing of existing footage at Runway. Discontinued on

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Sources

Read on 2026-08-14. A source that has changed since then will not be reflected here until the next pass.