How to Extend AI Video Clips with Runway Aleph

On Astorie's canvas, drop the source clip into a video reference node. Then place a separate image reference (photo, painting, or storyboard frame) that defines the look the extension should land on. Aleph uses the image reference to bias the new footage's style while preserving the source's motion timing.

Aleph takes the source as a timing anchor. Trim the source to the segment immediately before the extension target, then route into the Aleph node along with the look reference. Aleph generates the new continuation that picks up at the source's end frame while shifting toward the reference image's style.

Aleph reads prompts as direction-giving rather than scene-defining. "Continue the camera move forward, transition the scene from afternoon golden hour into early evening blue hour, character's wardrobe shifts to darker tones." Aleph respects the source motion exactly and applies the directional shifts gradually across the extension.

Aleph is the right pick when the extension is not just "more of the same" but introduces a creative shift: time-of-day transition, palette change, mood pivot. Pixverse Extend cannot do this — it only preserves. Wan can attempt it but gives looser control. For the seasonal mid-clip pivot or an emotional shift in a narrative extension, Aleph delivers the tightest creative output.

On the canvas, route the source and the Aleph extension into the sequence builder. Because Aleph applies directional shifts gradually, the cut between source and extension is invisible — the look transition happens across several frames inside the extension. No cross-fade needed.

When the extension does not land cleanly, swap the look reference image rather than rewriting the prompt. Aleph reads visual references more strongly than language. If the seasonal pivot is supposed to feel cooler, swap to a cooler-toned reference image; if warmer, swap to a warmer one. Each reference swap is a single Aleph re-render.