Runway has begun testing a ground breaking real-time scene editing feature inside its Gen-3 video model. The capability allows users to modify elements while the video is still being generated, marking one of the most advanced interactive video AI features released so far.
Edit Scenes Mid-Generation for Total Creative Control
The new feature enables creators to:
- Change objects or characters during video rendering
- Adjust lighting, motion, or background instantly
- Replace elements without restarting generation
- Experiment live without losing progress
This massively speeds up creative workflows.
A Major Shift Toward Interactive AI Filmmaking
Real-time control transforms how creators think about AI video.
- No need for full re-renders
- Faster iteration cycles
- More experimentation in storyboarding and design
- Dynamic scene composition on the fly
Gen-3 becomes closer to a true digital filmmaking tool rather than just a generator.
Why This Feature Is a Breakthrough for Creators
This capability benefits a wide range of users:
- Filmmakers adjusting scenes frame-by-frame
- Marketers creating fast variations of ads
- Content creators refining stories in real time
- Designers prototyping visual concepts instantly
The feature drastically reduces production time and cost.
Powered by Runway’s Improved Live Rendering Engine
Under the hood, Runway has upgraded its live rendering system for:
- Faster frame updates
- On-the-fly object manipulation
- More consistent visual coherence
- Smooth transitions between edited elements
This engineering step is key to enabling real-time interactivity.
Early Tests Suggest a New Standard for AI Video Tools
Testers report that scene adjustments feel immediate and intuitive.
- Edits apply within seconds
- Minimal visual disruption
- High accuracy in object replacement
- Strong stability, even during rapid changes
Runway seems positioned to outpace competitors with this innovation.

