Runway

Aleph

Aleph 2.0 is a video-to-video editing model for source clips from 2 to 30 seconds. The source establishes the shot and timing, the prompt describes the desired change, and up to five image keyframes can guide selected moments. Optional edit ranges limit every keyframe to a defined window.

How to use this model

  1. 1

    Upload a 2–30 second source clip and select the exact segment to edit.

  2. 2

    Describe the change while identifying what should remain consistent with the source.

  3. 3

    Add up to five image keyframes and place each one at a precise time when visual guidance is needed.

  4. 4

    Enable edit ranges only when every keyframe should affect a bounded, whole-second window.

2.0Available

Aleph 2.0

Use Aleph 2.0 when an existing shot supplies the timing and composition but its content or treatment needs to change. Up to five fractional-second keyframes can guide exact moments; range mode applies all keyframes within explicit whole-second edit windows.

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Properties

  • Input: one 2–30 second source-video segment plus an optional prompt and up to five image keyframes.
  • Keyframes support fractional-second timestamps; optional edit ranges use whole seconds and must be enabled for all keyframes together.

How to use this model

  1. 1

    Select the source segment before placing keyframes; their times are relative to that segment.

  2. 2

    Write a direct editing instruction describing both the intended change and preserved elements.

  3. 3

    Place image keyframes with 0.01-second precision and correct any marker that falls outside the selected clip.

  4. 4

    When using ranges, give every keyframe an integer start and exclusive end that contains its timestamp.

Parameters

Edit instructions

prompt
Optional

Source video

source_video
Required

Keyframes

keyframes
Optional

Target aspect ratio

target_aspect_ratio
Optional

  • 16:9

  • 4:3

  • 3:2

  • 1:1

  • 2:3

  • 3:4

  • 9:16

  • 21:9

Seed

seed
Optional
Range: 0 – 4294967295