Runway Aleph (by Runway)

Overview

Cinematic video-to-video model with high consistency.

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Quick facts

• Modes: Video → Video · Image + Video → Video

• Default clip length / output size: Variable

• Aspect ratios: Multiple aspect ratios supported

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What it's great for

• Video-to-video transformation

• High visual consistency

• Cinematic quality outputs

• Image-driven video modification

• Character performance animation (Act-Two)

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Parameters

Control	Type	Default	Notes
Video	Upload	—	Source video (required)
Prompt	Text	—	Natural-language instruction (required)
Reference Image	Upload	—	Optional for mixed mode
Seed	Number	Random	Optional for repeatable results

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Modes

Mode	Estimated time	Required inputs	Typical use
Video → Video	~220s	Prompt, Video	Transform existing video
Image + Video → Video	~220s	Prompt, Video, Image	Video with reference image

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Output options

Option	Values / notes
Duration	Matches input video

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Prompt tips

• Clear transformation instructions work best

• Reference images guide visual style

• Maintains high consistency throughout

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Safety

Text and image moderation are applied according to platform rules and the moderation parameter setting.

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