Runway Gen-4 (Runway)

Reference character consistency

Create cinematic close-up of character from reference image, maintain facial consistency across lighting

Scene generation

Image-to-video: gentle camera pan around the subject, 5s, cinematic grade

Video frame example

Edit: replace background with rainy city street, motion-matched reflections

Name

Type

Default

Notes

prompt

string

—

Required

image_url

string

—

For reference-based generation

aspect_ratio

string

TBD

21:9, 16:9, 1:1, 4:3, 3:4, 9:16

duration

select

TBD

5 seconds, 10 seconds 

seed

seed / integer

—

Optional

Mode

Estimated time

Required inputs

Typical use

Image → Video

1 minute

image_url, prompt

Animate stills

Video → Video

4 minutes

video_url, prompt

Restyle or reanimate video

Text → Image (if reference image is provided)

45~60 seconds 

Prompt, reference image

Character / environment generation

Option

Values / notes

Aspect ratio

21:9, 16:9, 1:1, 4:3, 3:4, 9:16

Formats

Image, Video

Notes

Reference consistency and production workflows: TBD