What is MMAudio?
MMAudio is a web-based video-to-audio generator. You upload a silent MP4 or paste a video URL, add an optional text prompt, and it creates sound matched to the motion and scene. It also offers text-to-audio, background music and text-to-speech, and it runs on credits with a small daily free allowance.
AI video generators often output silent clips, and finding and syncing sound effects by hand is tedious. MMAudio analyzes the video's context, movement and environment and generates audio timed to what happens on screen. A prompt lets you steer the sound, for example rain, footsteps or crowd noise. Note that mmaudio.net does not state who operates it or its link to the open-source MMAudio research model.
Main Features
- Video-to-audio generation synced to motion and scene context.
- Upload MP4 files up to 50 MB or import a video by URL.
- Generates up to 8 seconds of audio per video clip.
- Text prompts to steer the type of sound.
- Text-to-audio and 30-second text-to-music generation.
- Text-to-speech billed at 1 credit per 1,000 characters.
How to Get Started with MMAudio
- Sign up at mmaudio.net, no credit card required.
- Upload a silent MP4 or paste a video URL.
- Add an English prompt describing the sound you want and choose a model.
- Generate, preview and download the audio or video.
MMAudio Pricing
The free plan gives 1 credit per day plus login rewards. Paid plans start at $49.90 per year (Starter, 150 credits per month); video-to-audio costs 1 credit per generation.
Who Should Use It?
- Video editors adding sound effects
- Creators using silent AI-generated video clips
- Social media teams making short videos
- Hobbyists experimenting with AI audio
MMAudio Alternatives
- Meta's Audiobox: Meta research model for audio generation
- Fish Audio: focused on text-to-speech voices
- Lyria 3: Google music generation rather than sound effects
Frequently Asked Questions
Is MMAudio free?
Partly. The free plan gives 1 credit per day plus daily login rewards, enough for one short video-to-audio generation. Paid plans start at $49.90 per year for 150 credits per month.
How long can MMAudio clips be?
The site generates up to 8 seconds of audio per clip and accepts MP4 uploads up to 50 MB. For longer videos, generate audio in segments and join them in your editor.
Is mmaudio.net the official MMAudio project?
The site does not say who runs it or whether it is affiliated with the open-source MMAudio research model. Treat it as a hosted service and check its terms before commercial use.