Kling LipSync Audio-to-Video Text to Video
Input
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
Hint: Drag and drop audio files from your computer, audio from web pages, paste from clipboard (Ctrl/Cmd+V), or provide a URL. Accepted file types: mp3, ogg, wav, m4a, aac
Result
What would you like to do next?
Your request will be priced $0.014 per input video seconds, rolling up to closest 5 second increment. For example, if your video's duration is 3 seconds, it will be billed as a 5 second video
Logs
Kling LipSync | [audio-to-video]
Kuaishou's Kling LipSync generates realistic lip-synchronized video from audio input in approximately 12 minutes at $0.014 per 5-second increment. Trading speed for precision lip-sync accuracy, the model handles 2-10 second source videos with audio up to 60 seconds. Purpose-built for dubbing, content localization, and audio-driven character animation where mouth movement realism matters more than generation time.
Use Cases: Video Dubbing & Translation | Audio-Driven Character Animation | Content Localization for Global Markets
Performance
At $0.014 per 5-second video increment (rounded up), Kling LipSync positions as a specialized audio-to-video tool trading inference speed for lip-sync precision. Processing takes approximately 12 minutes regardless of video duration within the 2-10 second input range.
| Metric | Result | Context |
|---|---|---|
| Inference Speed | ~12 minutes | Fixed processing time for 2-10s input videos |
| Cost per Video | $0.014 per 5s increment | Billed in 5-second increments (3s video = 5s charge) |
| Input Video Duration | 2-10 seconds | 720p/1080p, ≤100MB, .mp4/.mov only |
| Audio Duration | 2-60 seconds | ≤5MB file size, .mp3/.wav/.ogg/.m4a/.aac formats |
| Resolution Support | 720p-1080p | Width/height constrained to 720-1920px |
Precision Lip-Sync Without Training Data
Kling LipSync uses audio-driven facial animation architecture that generates mouth movements directly from audio waveforms without requiring speaker-specific training data, contrasting with traditional lip-sync approaches that need extensive footage of the target speaker.
What this means for you:
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Zero-shot speaker adaptation: Sync any audio to any face without pre-training on that specific person, enabling rapid dubbing workflows across multiple speakers and languages
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Extended audio support: Process up to 60 seconds of audio against 2-10 second video clips, useful for looping background characters or extending dialogue beyond source footage length
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Format flexibility: Accepts 5 audio formats (.mp3, .wav, .ogg, .m4a, .aac) and standard video containers (.mp4, .mov), integrating into existing video generation workflows without format conversion overhead
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Increment-based pricing transparency: 5-second billing increments mean predictable costs (a 3-second video costs the same as 5 seconds at $0.014, a 7-second video bills as 10 seconds at $0.028)
Technical Specifications
| Spec | Details |
|---|---|
| Architecture | Kling LipSync |
| Input Formats | Video: .mp4, .mov (2-10s, ≤100MB) / Audio: .mp3, .wav, .ogg, .m4a, .aac (2-60s, ≤5MB) |
| Output Formats | .mp4 video with synchronized lip movements |
| Resolution Requirements | 720p or 1080p input, width/height 720-1920px |
| License | Commercial use via fal partnership |