Guides
AI Sound Effects for Game Trailers
- Written by
- Sonilo Team
- Published
Game trailers live or die on impact: a punch that lands a frame late, a UI blip that's too quiet, an explosion with no low end reads as amateur, and Sonilo's video-to-sfx model generates layered, frame-accurate sound effects straight from your trailer cut so every reveal, whoosh, and impact hits exactly on beat.
Quick answer
Sonilo's video-to-sfx API analyzes your trailer footage directly, reading cuts, motion, and on-screen action, and generates realistic sound effects timed to those visual moments: explosions on impact frames, whooshes on camera pans, UI chimes on menu reveals, and footsteps or clashes synced to character action. Submit your trailer cut, poll for the result, and drop the finished SFX layer into your edit alongside a Sonilo-generated music score. Everything is licensed via Shutterstock, so the output is cleared for use in a paid ad or storefront listing.
Why it fits game trailer production
| Need | Sonilo capability | Why it matters |
|---|---|---|
| SFX synced to specific trailer moments | video-to-sfx analyzes cuts, motion, and on-screen action directly from the uploaded video | Explosions, reveals, and transitions get sound designed to the exact frame instead of dropped in roughly by ear |
| Commercial-safe audio for a paid asset | All output is fully licensed via Shutterstock | Trailers that run as store listings or paid ads need cleared audio, not stock packs with ambiguous usage rights |
| A one-off SFX before the edit is locked | text-to-sfx generates standalone effects from a text description, like "sword clash" or "sci-fi UI beep" | Sound design can start before the final cut exists, then get swapped for frame-synced effects later |
| A cinematic score to sit under the SFX | video-to-music generates a music score from the same trailer footage, as a separate endpoint from SFX | SFX and music can be generated from the same cut and mixed together instead of licensing two different libraries |
| Quality that holds up against competitors | Sonilo Sound Effects 1.0 beat ElevenLabs SFX v2 on 16 of 24 metrics in the open-source audio-eval benchmark | Independently measured quality, not just a marketing claim, for a use case where audio quality is part of the pitch |
How it works
- Upload your trailer cut, either in the Sonilo web app or via a POST request to /v1/video-to-sfx on api.sonilo.com.
- Sonilo processes the request asynchronously: the API returns a task_id immediately while the model analyzes cuts, motion, and on-screen action to generate matched sound effects.
- Poll the task with your task_id and fetch the finished SFX layer once it's ready, then drop it into your timeline against the original picture edit.
- Optionally generate a companion score with video-to-music from the same cut, and use text-to-sfx for any standalone effects, like a UI stinger or logo whoosh, that don't need to be synced to a specific frame.
FAQ
How accurate is the timing for fast-cut trailer moments?
video-to-sfx reads the video's cuts, motion, and on-screen action directly, so impacts, whooshes, and reveals are generated to align with those visual moments rather than being placed by manual guesswork, which matters for the rapid-fire cutting typical of game trailers.
Can Sonilo also score the trailer's music?
Yes. video-to-music is a separate endpoint that generates a music score from the same trailer footage, so you can pair a generated score with a generated SFX layer without sourcing either from a separate library.
Does it support an async API workflow for a production pipeline?
Yes. Every generation request is processed asynchronously: you submit the trailer cut to the REST API at api.sonilo.com with Bearer auth, receive a task_id, and poll for the result, which fits cleanly into an automated editing or asset-generation pipeline rather than requiring someone to sit and wait in a browser tab.
Is the audio commercial-safe for a store listing or paid ad?
Yes. All Sonilo-generated audio, sound effects and music alike, is fully licensed via Shutterstock, which covers commercial use in paid advertising and storefront trailer assets.
Related Sonilo pages
- Video-to-SFX API docs: https://platform.sonilo.com/docs/api/video-to-sfx
- Text-to-SFX API docs: https://platform.sonilo.com/docs/api/text-to-sfx
- Video-to-Music API docs: https://platform.sonilo.com/docs/api/video-to-music
- Sonilo pricing: https://sonilo.com/pricing
