Runway Gen:48, the running time allowed: 1 to 4 minutes, made inside the 48-hour window. From 1 source page, read 2026-09-25; no maker pays to be listed.
Create a 1-4 minute video that uses Runway video tools and optionally Epidemic Sound tools
1 Billion AI Film Award, AI for Good Film Festival, Bochnia International AI Film Festival, Chroma Awards, Human vs. AI Film Festival, Reply AI Film Festival, Runway AI Festival and World AI Film Festival have this reading, “a minimum and a maximum”: 9 festivals in all.
It reflects the rules published for the latest edition on the reading day.
Running time can rule out a finished AI film on its own. A 60-second cap, a 314-second cap and a three-minute minimum cannot all be met by one cut, so a film meant for several festivals may need more than one version.
For an entrant reading “Runway Gen:48”, this is what SceneMixer publishes about the film its pipeline hands over:
Paste a scene or a short script and SceneMixer gives you a storyboard — numbered shots with framing and seconds — and then a moving version of each segment, which you can join into a rough cut of the scene.
Video is 16:9 landscape by default, with 9:16 vertical available; you set it once per project. Segments are typically 4 to 15 seconds, and some model tiers go to 30.