Sonilo
Generate sound effects that actually sync to your video's timing, either from a text prompt or straight from the footage itself.
The verdict on Sonilo: Video creators who need sound effects timed to on-screen action instead of a close-enough stock library match Sonilo's specific job is sound effects that sync to on-screen action, not generic audio pulled from a stock library. Pricing: Usage-based API pricing via fal, no flat subscription. Last reviewed: August 2026.
Best For
Video creators who need sound effects timed to on-screen action instead of a close-enough stock library match
Standout Feature
Analyzes a video's visible action and generates sound effects synced to what's actually happening, not generic audio
TL;DR
Fills a real gap for timed sound design, it's API-only and very new with limited independent review of output quality.
Alternatives
Overview
Sonilo generates realistic sound effects from a written prompt or directly from a video clip, syncing the generated audio to on-screen action instead of leaving creators to search stock-sound libraries for a close-enough match. Point it at a video and it can analyze the visible action and generate sound effects timed to what's happening on screen, or skip the video entirely and generate an effect from a text description alone. It's available through fal as the exclusive API launch partner, so teams already using fal for other generative media can add sound-effect generation into the same pipeline without integrating a separate vendor.
Pricing is usage-based through the API rather than a flat subscription. Sonilo fits video editors, game developers, and content creators who need sound effects that actually match footage timing without digging through stock libraries or hiring a sound designer for every project.
Our Take
Video creators doing post-production who need sound timed to what's actually happening in a shot, footsteps landing, objects hitting surfaces, environmental cues, are the target user, not someone looking for background music. It's API-only through fal and very new, so there's limited independent review of how it performs across different content types. If you're already in the fal ecosystem and doing video post-production work, it's worth testing directly, but set realistic expectations given how early-stage it is.
Key Features
- Generates sound effects from text prompts or directly from video
- Automatic timing sync to on-screen action
- Available via fal's API as launch partner
- Usage-based pricing with no subscription lock-in
- • Fills a real gap for timed, video-synced sound effects rather than generic stock audio
- • Simple API access through fal for teams already in that ecosystem
- • No flat subscription, pay only for what you generate
- • Very new, limited independent reviews of output quality across genres
- • API-only access, no standalone app or UI yet
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Workflows Using This Tool
Step-by-step playbooks that put Sonilo to work.