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Customize your input with more control.
Customize your input with more control.
Hint: Drag and drop video files from your computer, video from web pages, paste from clipboard (Ctrl/Cmd+V), or provide a URL. Accepted file types: mp4, mov, webm, m4v, gif
Type # to reference inputs.
Customize your input with more control.
Your request will cost $0.001 per second.
MMAudio V2 generates synchronized audio for video content at $0.001 per second. With specialized audio synchronization, this model takes existing video and adds contextually appropriate sound effects, music, or ambient audio based on your text descriptions. Built for developers who need to add audio layers to silent AI-generated videos or enhance existing footage with programmatic sound design.
Use Cases: AI Video Post-Production | Programmatic Advertising Audio | Content Localization | Social Media Video Enhancement
MMAudio V2 operates on a duration-based pricing model at $0.001 per second, making it significantly more cost-effective than full video generation pipelines that include audio synthesis. You're paying only for audio processing rather than complete video regeneration.
| Metric | Result | Context |
|---|---|---|
| Processing Duration | 1-30 seconds | Configurable audio length via duration parameter |
| Inference Steps | 4-50 steps (default 25) | Higher steps improve audio-video synchronization quality |
| Cost per Second | $0.001 | 1,000 seconds of audio generation per $1.00 on fal |
| Input Flexibility | Video + text or text-only | Accepts MP4, MOV, WebM, M4V, GIF formats |
| Related Endpoints | sync.so lipsync | Specialized lipsync generation |
MMAudio V2 uses a conditional audio generation architecture that analyzes video frames to produce temporally aligned audio tracks. Unlike text-to-video models that generate both modalities from scratch, this model specializes in audio synthesis conditioned on existing visual content, preserving your original video while adding synchronized sound layers.
What this means for you:
Visual Fidelity: Generate audio without re-encoding or degrading your source video quality. The model outputs a new video file with synchronized audio track added
Prompt-Driven Sound Design: Describe the audio you need ("Indian holy music", "urban traffic ambience", "dramatic orchestral score") and the model synthesizes audio matching both your text and video content
Flexible Duration Control: Generate audio tracks from 1 to 30 seconds through the duration parameter, matching your video length requirements
Classifier-Free Guidance: Adjust cfg_strength (0-20, default 4.5) to control how closely audio follows your text prompt versus video content. Higher values prioritize text adherence
| Spec | Details |
|---|---|
| Architecture | MMAudio V2 |
| Input Formats | Video: MP4, MOV, WebM, M4V, GIF; Text prompts with optional negative prompts |
| Output Formats | Video file with synchronized audio track (MP4 container) |
| Audio Duration | 1-30 seconds configurable |
| License | Commercial use permitted |
API Documentation | Quickstart Guide | Enterprise Pricing
MiniMax Video 01 Live – MMAudio V2 complements rather than competes with full video generation models like MiniMax. Where MiniMax generates complete videos from text (including visual and audio elements), MMAudio V2 specializes in adding or replacing audio tracks for existing video content. Combine MMAudio V2 with any video generation endpoint when you need custom audio.