RunDiffusion now supports Veo 3.1 Extend and Veo 3.1 Fast Extend, two tools built to lengthen existing clips while preserving visual continuity, pacing, and motion quality. This release gives creators a cleaner way to expand short shots into more complete narrative beats without rebuilding scenes from scratch.
Both tools are designed for timeline extension workflows. They take an existing video clip and generate an additional 7 seconds with coherent motion and cinematic consistency relative to your source footage.
Use Veo 3.1 Extend when you want balanced extension quality and control. Use Veo 3.1 Fast Extend when speed is the priority and you need rapid turnaround for iteration.
Veo 3.1 Extend
Veo 3.1 Extend is built to push a clip forward while staying faithful to the original video’s structure, tone, and motion language.
Core capabilities:
- Seamless extensions: Add 7 seconds of high-fidelity continuation to an existing clip
- Flexible framing: Choose 16:9, 9:16, or auto aspect ratio
- Cinematic resolution: Outputs at 720p for strong quality-to-speed balance
- Optional audio: Generate synchronized sound to match extended footage
Best suited for: Narrative continuation, polished scene extensions, and quality-focused postproduction workflows.
Architecture example with Veo Extend
Veo 3.1 Fast Extend
Veo 3.1 Fast Extend delivers the same extension concept with an emphasis on faster turnaround for high-velocity creative workflows.
Core capabilities:
- Rapid seamless extensions: Quickly add 7 seconds of new clip content
- Flexible framing: Supports 16:9, 9:16, or auto aspect ratio
- Cinematic resolution: 720p output for efficient production workflows
- Optional audio: Add synchronized soundscapes for a more complete result
Best suited for: Rapid iteration, social content pipelines, and fast-turn video production.
Architecture interior design example
Availability
Veo 3.1 Extend and Veo 3.1 Fast Extend are now available on RunDiffusion. Choose Veo 3.1 Extend for balanced quality-focused continuations, or Veo 3.1 Fast Extend when speed and iteration volume are your top priorities.



