AI Sound Effects — Generate SFX from Video or Text Online Free
AI Sound Effects
Create production-ready sound effects from a video or a text description.
Advanced
Estimated credits
4 credits per second · 4-credit minimum
Sign in to generate and keep your history.
Your sound will appear here
Upload a video to create audio timed to the action.
Why AI Sound Effects?
Create timed sound effects from video action or a detailed text description
Two Generation Modes
Video to SFX follows the action in an uploaded clip, while Text to SFX builds a standalone effect from your description.
Transparent Duration Pricing
Credit estimates update with duration before you generate — video mode uses 4 credits per second, text mode uses 1 credit per second, with a 4-credit minimum.
Four Audio Formats
Export as AAC, MP3, WAV, or FLAC. AAC is the default for broad playback compatibility.
Preview & History
Listen before you download, then reopen past generations from history whenever you need them again.
How to Use AI Sound Effects
Three simple steps to generate production-ready sound effects
Choose a Mode
Select Video to SFX to sync with on-screen action, or Text to SFX to create a standalone effect from a prompt.
Configure Input
Upload a clip or write a concrete sound description. Review duration, output format, and estimated credits.
Generate & Download
Run generation, preview the audio, download the result, or revisit it later from history.
Use Cases
Built for product demos, campaigns, interface audio, and creative production
Technical Specifications
AI Sound Effects combines video-synced and text-driven workflows so you can generate impacts, ambience, transitions, and interface tones without a full foley session.
- Dual workflows: Video to SFX and Text to SFX
- Duration range from 1 to 180 seconds
- Video mode: 4 credits/sec · Text mode: 1 credit/sec · 4-credit minimum
- Output formats: AAC, MP3, WAV, FLAC
- In-browser preview plus reusable generation history
- Generated audio can be used in commercial projects
Frequently Asked Questions
Everything you need to know about AI Sound Effects
AI Sound Effects is an online tool that generates timed audio from either an uploaded video or a text description. Use it for product clips, campaign assets, interface tones, and creative production.
Video to SFX follows the timing and action of an uploaded clip. Text to SFX creates a standalone effect at the duration you choose.
Video mode uses 4 credits per source second and text mode uses 1 credit per output second, with a minimum charge of 4 credits. Estimates are shown before generation.
You can generate AAC, MP3, WAV, or FLAC audio. AAC is selected by default for broad playback compatibility.
Both modes support durations from 1 to 180 seconds. Video mode uses the verified source duration when available.
Name concrete sound sources and materials instead of mood words alone. Mention timing, distance, environment, and intensity when those details matter.
Yes. Generated sound effects can be used in commercial projects. Always review brand, platform, and compliance requirements before publishing.
Yes. Successful results appear in history so you can preview, download, or reuse them later without regenerating from scratch.
Ready to Generate AI Sound Effects?
Pick Video to SFX or Text to SFX, review duration-based credits, and create production-ready audio in minutes.
Get Started Free