HKUST
MMAudio V2
Adds a soundtrack to a silent video: sound effects and ambience in time with what happens on screen, from a prompt. The result is the start of your video, as many seconds as you ask for (up to 30), with the new sound. On Leap, it sits beside 130 other models in one studio.
- Video to audio
- Up to 30 s
- Start free, no card
- Every top model, one account
- Pay per run, priced before it starts
- 01Describe what you want to see
- 02See the exact price, then press go
- 03Keep it in your library, or take it further
Start with an idea
Bring a photo to MMAudio V2
MMAudio V2 works on a picture you already have. Open it in the studio, add your photo, and see the result in seconds.
Side by side
More video models on Leap
Questions
MMAudio V2 on Leap, answered.
- Is this the real MMAudio V2?
- Yes. Leap sends your request to HKUST's model through its provider and gives you back what it makes. Switch to any other model in the same studio when an idea needs it.
- What does it cost?
- In dollars, per run: the provider's list price plus 10%. You see the exact price before every run, a run that fails costs nothing, and there is no subscription. Every model's price is on the pricing page.
- Do I need a HKUST account?
- No. One Leap account and one balance run MMAudio V2 and every other model, in the studio, through the API and from your agents.
- What happens to what I make?
- It stays in your library while your account is active, ready to use anywhere.
Your idea, MMAudio V2.
Start free, no card. Every run shows its price before it starts.
Make it with MMAudio V2For developers
Run MMAudio V2 from code
- Model ID
- hkust/mmaudio-v2
- Makes
- Video
- Pricing
- Per run, quoted first: POST /v1/quotes
Inputs
What the model takes. Leave out anything with a default.
The request
The same envelope for every model; only the model and its input change. With prefer: wait=60 the answer holds the result. Agents can call it through the MCP server at mcp.tryleap.ai.
curl https://api.tryleap.ai/v1/generations \ -H "x-api-key: $LEAP_API_KEY" \ -H "content-type: application/json" \ -H "prefer: wait=60" \ -d '{ "model": "hkust/mmaudio-v2", "input": { "video": "file_...", "prompt": "A paper boat drifting down a rainy street at dusk" } }'