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MMAudio AI Video Sound Generator

Transform silent footage into immersive experiences. Our **AI Video Sound Generator**, powered by MMAudio, automatically analyzes visuals to **sync audio to video** with precision. Generate realistic **sound effects** and ambient textures directly from video or text inputs.
Demo of AI video sound generator creating synchronized audio and sound effects for video
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How to Use the AI Video Sound Generator

Follow this simple guide to add immersive sound to your silent footage. Our MMAudio integration makes it easy to produce synchronized audio that matches your video's visual context.
Step 1

Upload Video or Text Input

Start by uploading a silent video clip or entering a descriptive text prompt. The AI analyzes visual cues or text to prepare for audio synthesis.
Step 2

Define Sound Context

Optionally, add a prompt to guide the style. Specify if you want to **generate sound effects**, cinematic scores, or realistic ambient noise.
Step 3

Sync Audio to Video

Click Generate. The model uses advanced feature extraction to **sync audio to video**, aligning sounds like footsteps or impacts perfectly with the motion.
Step 4

Preview and Download

Review the result. Once satisfied with the synchronized audio track, download your complete video with its new, high-fidelity soundtrack.
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Why Our AI Video Sound Generator Leads the Industry

Experience the next generation of audio synthesis. Powered by MMAudio, our tool offers frame-perfect synchronization, deep semantic understanding of visual scenes, and dual-mode control for creating immersive soundscapes in seconds.

Frame-Perfect Audio Sync

Eliminate manual editing. Our advanced synchronization module analyzes motion at the frame level to automatically **sync audio to video**, ensuring footsteps, impacts, and speech align perfectly.
Try Audio Sync

Context-Aware Sound Effects

Generate audio that truly fits. Whether it's a rainy street or a sci-fi explosion, the AI understands visual semantics to **generate sound effects** and ambient noise that match your scene's reality.
Generate Effects

Video & Text Dual Control

Enjoy ultimate creative freedom. Upload a video for automatic **video-to-audio synthesis**, or add text prompts to guide the specific mood, style, and texture of the sound.
Learn Prompting
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Pricing for MMAudio AI Video Sound Generator

Transparent pay-as-you-go pricing. Whether you are generating sound effects for a short clip or a full scene, you only pay for the duration of the synchronized audio generated.
Name & RoleCredits
Base Rate
1 Credit per second
1
5s Video Clip
5 Credits total
5
10s Video Clip
10 Credits total
10
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Freq. Asked Questions about AI Video Sound Generator

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What is the MMAudio AI Video Sound Generator?

It is an advanced tool powered by the MMAudio model that **transforms silent video into sound-rich content**. It automatically analyzes your video to **sync audio to video**, producing realistic **sound effects**, ambient noise, and background tracks that match the visual context.

Can I add sound to silent AI videos from Sora or Kling?

Yes, absolutely. Our tool is the perfect solution to **add sound to silent AI videos** generated by platforms like OpenAI Sora, Kling AI, Runway Gen-3, or Luma Dream Machine. Simply upload your MP4, and the AI will generate matching audio instantly.

How does the AI sync audio to video?

The model uses deep semantic understanding to analyze the motion and content of your video frame-by-frame. It identifies visual cues—like footsteps, rain, or car engines—and performs **video-to-audio synthesis** to align these sounds perfectly with the on-screen action.

Can I control the audio style with text prompts?

Yes. While the AI automatically detects context, you can also use text prompts to guide the specific style. For example, input 'cinematic sci-fi score' or 'lo-fi beats' to ensure the **generated audio** fits your creative vision.

Are the generated sound effects copyright-free?

Yes. The audio generated by our **AI Video Sound Generator** is unique to your input. You generally hold the commercial rights to the output, making it safe for use in YouTube videos, social media content, and commercial projects (subject to Toolplay's standard terms).

How much does it cost to generate audio?

Pricing is simple and transparent: **1 Credit per second** of generated audio. For example, adding sound to a standard 5-second AI video clip will cost exactly 5 credits.

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