PrismAudio is an AI-powered video to audio generator that automatically adds synchronized sound to your videos. Upload any video - silent or not - and PrismAudio analyzes every frame to create matching sound effects from scratch.

Key Features:

- Spatial Stereo Sound: Sounds come from where they should - left, right, near, far. The only tool that generates real stereo audio.

- Frame-Perfect Sync: Audio matches exactly what's happening on screen, down to the smallest movement.

- Ultra-Fast: Most videos are ready in under 1 second (0.63s average).

- AI Video Compatible: Works perfectly with videos from Sora, Veo3, Kling, and Runway.

- Complex Scene Support: Handles multiple overlapping sounds like rain + footsteps + traffic.

Built on research accepted at ICLR 2026 by Alibaba's FunAudioLLM team. Free to start - no credit card needed.