Introducing Kuaishou Kling Video-to-Audio on WaveSpeedAI
Try Kuaishou Kling Video-to-AudioKling Video-to-Audio Is Now Live on WaveSpeedAI
The gap between stunning AI-generated visuals and immersive, cinema-quality audio has just closed. WaveSpeedAI is proud to announce the availability of Kling Video-to-Audio, a powerful model from Kuaishou Technology that transforms silent video clips into fully realized audiovisual experiences—complete with synchronized sound effects, ambient textures, and background music.
Whether you’re producing short-form content, trailers, product demos, or creative films, Kling Video-to-Audio eliminates the tedious post-production audio workflow. Upload your video, describe what you want to hear, and let the model handle the rest.
What Is Kling Video-to-Audio?
Kling Video-to-Audio is built on Kling-Foley, a state-of-the-art multimodal diffusion transformer developed by Kuaishou’s AI research team. Unlike traditional sound design workflows that require hours of manual foley work, library searching, and audio syncing, this model synthesizes high-fidelity audio that is both semantically aligned and temporally synchronized with your video content.
The technology leverages a sophisticated architecture combining:
- Visual Semantic Representation: ViT-bigG-14 within MetaCLIP extracts rich visual features from your footage
- Audio-Visual Synchronization: A dedicated SyncFormer module ensures frame-level temporal alignment
- Multimodal Joint Conditioning: Text, video, and audio signals are fused through unified attention mechanisms
The result? Audio that doesn’t just accompany your video—it understands and responds to every on-screen action.
Key Features
Dual-Prompt Control: SFX + BGM
Unlike simpler audio generation tools, Kling Video-to-Audio accepts two separate prompts:
- Sound Effects Prompt: Describe the foley and ambient sounds you want (footsteps, glass breaking, wind, machinery)
- Background Music Prompt: Specify mood, instrumentation, tempo, and emotional arc
This separation gives you precise control over both the sonic texture and musical atmosphere of your content.
Frame-Level Synchronization
The model achieves what Kuaishou calls “audio-visual SOTA performance” in temporal alignment. When a door slams on screen, the sound hits at exactly the right moment. When a character walks, footsteps match their pace. This synchronization is powered by the SyncFormer architecture, specifically designed to infer fine-grained temporal alignment from visual cues.
ASMR Mode for Ultra-Detailed Textures
Toggle ASMR mode to enhance micro-details and proximity effects. This feature amplifies crisp foley elements—leather creaking, fabric rustling, raindrops on glass—for content that demands immersive, close-mic audio quality.
Arbitrary Duration Support
The model dynamically adapts to your video’s length using discrete duration embeddings. Whether your clip is 5 seconds or 60 seconds, Kling Video-to-Audio generates a complete, coherent soundtrack.
Stereo Spatial Rendering
Beyond mono output, the model includes mono-to-stereo conversion that positions sounds in space, creating a dimensional listening experience that enhances the visual narrative.
Real-World Use Cases
Advertising and Marketing
Generate complete commercial audio in minutes instead of days. Product shots, brand videos, and social media ads can now include professional-grade sound design without hiring audio engineers or licensing expensive music libraries.
Independent Filmmaking
For indie creators working with limited budgets, Kling Video-to-Audio democratizes post-production. Generate atmospheric scores, environmental ambience, and foley for your short films—then fine-tune in your editor.
E-Commerce Product Videos
Silent product demonstrations become engaging content with appropriate soundscapes. Showcase a coffee machine with the sound of brewing, or a gaming keyboard with satisfying mechanical clicks.
Content Creators and Social Media
Accelerate your content pipeline. TikTok, YouTube Shorts, and Instagram Reels demand constant output—this model lets you add polished audio to video drafts in a single API call.
Game Development and Prototyping
Quickly generate placeholder audio for cutscenes and gameplay sequences during development. Iterate on mood and atmosphere without waiting for final audio assets.
Documentary and Journalism
Reconstruct ambient soundscapes for archival footage or B-roll. Add subtle environmental audio that enhances narrative without distracting from the story.
Getting Started on WaveSpeedAI
Using Kling Video-to-Audio on WaveSpeedAI is straightforward:
- Upload or link your video: Provide a URL or upload your silent clip directly
- Write your sound effects prompt: Be specific about events, materials, and spatial positioning (“car engine revving, tires screeching on asphalt, distant sirens”)
- Write your BGM prompt: Describe the musical mood and instrumentation (“tense electronic score, pulsing synth bass, minimal percussion building to climax”)
- Optional: Enable ASMR mode for enhanced textural detail
- Run the model and receive your synchronized audio track
Prompting Tips for Best Results:
- Be concrete and specific: “leather jacket rustle, footsteps on wet concrete, elevator ding” outperforms vague descriptions
- Specify tempo and structure for background music
- Keep SFX and BGM prompts stylistically consistent to avoid sonic clashes
- Start with clean, final-cut footage—editing video after audio generation will break sync
Access the model directly at https://wavespeed.ai/models/kwaivgi/kling-video-to-audio.
Why WaveSpeedAI?
WaveSpeedAI delivers Kling Video-to-Audio with the performance and reliability that production workflows demand:
- No Cold Starts: The model is always warm and ready to process your requests immediately
- Affordable Pricing: At just $0.035 per job, professional audio generation is accessible to creators at every scale
- Ready-to-Use REST API: Integrate directly into your existing pipelines with minimal development effort
- Fast Inference: Get results quickly without sacrificing quality
Transform Your Video Workflow Today
The era of silent AI-generated video is over. With Kling Video-to-Audio on WaveSpeedAI, you can close the audio gap and deliver complete, polished audiovisual content in a fraction of the time traditional workflows require.
Stop compromising on sound. Stop waiting for audio engineers. Start creating immersive video content with synchronized soundtracks that match your creative vision.
Try Kling Video-to-Audio on WaveSpeedAI and hear the difference intelligent audio generation makes.
