Sonilo

Sonilo is a video-aware music and sound-effects generator with speech translation and re-voicing tools. It suits video creators who want audio shaped around their footage, and developers who need generation through an API. Its strongest case is the mix of visual matching and text-based creation; commercial licensing and default model-improvement use deserve careful consideration.

Overview

Upload an MP4 or MOV file, or describe the sound you want. Sonilo analyzes the visuals rather than the existing soundtrack, leaving the original audio available to keep, adjust, replace, or layer. It produces several variations by default, with an optional prompt to guide the style. That visual focus is useful when music or effects need to follow a clip’s mood and scene changes, while text generation offers a cheaper route when matching footage is not essential.

Video-to-music and video-to-sound-effects cost 18 credits per output second; text-to-music costs 5, and text-to-sound-effects 4. A 15-second and 200-credit minimum applies, so short outputs still have a floor. The listed maximum clip length is 180 seconds.

Key features

Sonilo also translates speech, re-voices videos, supports lip-sync re-rendering, and accepts SRT or VTT subtitles. The API covers all four video- and text-based music and sound-effects modes, along with audio ducking, task polling, and account-usage access. Plugins are available for Adobe Premiere Pro, Unity, Godot, Epic Games Fab, Roblox Studio, and Defold, making it relevant to both editing and game-development workflows.

Sonilo says its models use licensed music datasets, including content authorized through Shutterstock. That addresses the stated basis for its training material, but not how a customer’s own uploads are used: the privacy policy says videos, prompts, outputs, and related data may be used for AI training and product improvement by default, without a separate opt-out. It also prohibits uploading sensitive categories such as minors’ data, biometrics, health information, government IDs, and confidential third-party business materials unless authorized in writing. Those terms make it a poor choice for sensitive or restricted footage.

Pricing

Sonilo is freemium, with a free plan and a free trial. Free costs nothing and provides 2,000 credits every two weeks, preview-quality exports, videos up to 3 minutes, 500 MB of storage, and one task. The allowance is framed as roughly seven 15-second video soundtracks, six minutes of text-to-music, or eight minutes of text-to-sound-effects. It is a useful way to try the workflows, but exports are preview quality and the plan is limited to personal, non-commercial use.

Pro costs $11.99 a month, billed yearly as $143.88~~$240~~. It includes 40,000 credits per month, videos up to 8 minutes, 1.5 GB of storage, 800 seconds of video translation per language, unlimited tasks, and unlimited free downloads. Its credit equivalents are about 148 15-second video soundtracks, 133 minutes of text-to-music, or 166 minutes of text-to-sound-effects. Pro grants commercial-use rights, so it is the entry point for routine commercial work.

Premium costs $23.99 a month, billed yearly as $287.88~~$480~~. It raises the monthly allowance to 100,000 credits, video length to 30 minutes, storage to 3 GB, and translation to 2,000 seconds per language, while keeping unlimited tasks and downloads. Its approximate equivalents are 370 15-second video soundtracks, 333 minutes of text-to-music, or 416 minutes of text-to-sound-effects. It fits heavier use or longer source videos better than Pro, though video translation remains capped.

Enterprise has custom pricing and includes volume credit rates, no minimum charge, 20 seats, custom credits and upload limits, a dedicated dashboard, an account manager, and priority support. It is the plan for teams needing negotiated capacity and support. The published starting price is 4.99 /mo (annual), but the individual Pro and Premium prices are higher, so check the plan terms before choosing on price alone.

Platforms

Sonilo is available on Android, iOS, and the web, with API access for developers. Its editor and engine plugins extend the workflow to Adobe Premiere Pro, Unity, Godot, Epic Games Fab, Roblox Studio, and Defold.

Who it's for

Choose Sonilo if you need music or effects that respond to video visuals, want text-based generation as a lower-credit alternative, or need translation alongside audio creation. Developers can use the API for generation and audio ducking. Look elsewhere if you need commercial rights on a free plan, have sensitive footage covered by the upload restrictions, or require a clear opt-out from product-improvement use.

Pros and cons

• Pros: Video-aware and text-driven generation cover distinct creative needs, and multiple variations are produced by default.
• Pros: Translation, re-voicing, lip-sync re-rendering, API access, and editor integrations extend its use beyond soundtrack creation.
• Pros: Pro and Premium include commercial-use rights, unlimited tasks, and unlimited free downloads.
• Cons: Video-based generation costs more credits per second than text generation, and minimum duration and credit charges can weigh on short jobs.
• Cons: Free exports are preview quality and non-commercial; even paid translation has per-language caps.
• Cons: Default use of uploads, prompts, and outputs for model improvement, alongside strict upload exclusions, may rule it out for confidential projects.

Alternatives

AI Sound Effect Generators is a useful place to compare other sound-effects tools. Choose Mirelo instead if you prefer its API, macOS, web, and Windows platform mix; its Creator plan costs €20 a month and includes 24,000 credits and 20 projects.

Async offers a free plan with 10 lifetime AI credits, one hour of media upload to AI chat, up to 720p export, and 2 GB storage, a different option for readers who want to start with a small lifetime allowance. AudioGen is a free, self-hosted alternative for Linux or API use, with local inference requiring a GPU with at least 16 GB memory. HueFold is another freemium option, available on Android and the web.

Morphic offers a web-based free tier capped at 20 credits for one user, while Pixazo AI SFX Generator has a 7-day trial with 100 bonus credits that lapse afterward, no API access, and no commercial rights during the trial. SeedAudio offers a first generation without sign-up, 20 credits on sign-up, and generations up to 60 seconds. SFX Studio is a free web and API option with signup credits and no watermark; its Pro plan costs $9.50 a month.

Verdict

Sonilo is a strong fit for video creators and developers who want sound generated around footage, with text creation, translation, and API tools in the same product. Paid plans add commercial rights and substantial monthly credits, but the high per-second cost of video generation, capped translation, and default data use are real trade-offs. Choose it for its combined video-aware workflow; look elsewhere for sensitive material or when commercial use without a paid plan is essential.