Rubbrband - Make movies using AI
Create movies from screenplay, while controlling dialogue, sound, and shots.
Hey YC, we’re Rubbrband from the W23 batch! We’re building a new way to make movies using AI.
Here’s a quick demo:
https://youtu.be/m48rxBNuhQc
What is Rubbrband?
Rubbrband helps you turn a script into a film.
You control dialogue, sound, and shots.
Heres how it works:
Upload a script. Lock in characters and costumes. Record or upload voices for each character. Generate OST. Export an MP4.

Who are we?
We’re college roommates from UC Berkeley!
- Jeremy — worked on ML + audio at CNMAT.
- Darren — ML researcher (MRI focus) at Berkeley.
- Abhinav — RL/ML at BAIR.
The problem
It’s currently hard to make long-form movies using AI tools.
Filmmakers need one place where the world, the shots, the voices, and the music stay in sync.

Our solution
A tool that keeps context on a film and lets you generate inside it.
- Script breakdown: characters, scenes, dialogue.
- Character design: bring your art or generate; lock a base look + costumes.
- Voices: record or clone. One default voice per character.
- Shot list: type, lens, angle, move.
- OST: generate cues per scene; loopable; stems when supported.
- Final movie: assemble into a timed cut with dialogue + music. Export MP4
Our ask
- Comment me for early access (we’re rolling seats out weekly) at jeremy@rubbrband.com
- Intros to directors, showrunners, or previz leads are welcome