digital-human
LTX-2.3 Lipsync generates talking head videos from audio with synchronized lip movements and natural facial expressions. Built on DiT-based architecture with improved audio-visual alignment quality. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
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Votre requête coûtera $0.1 par exécution.
Pour $1 vous pouvez exécuter ce modèle environ 10 fois.
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README
LTX-2.3 Lipsync
LTX-2.3 Lipsync is an advanced AI model that generates talking head videos from audio and an optional reference image. Built on the LTX-2.3 DiT-based architecture with improved audio-visual quality, it creates realistic lip-synced videos that match your audio input.
Why Choose This?
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Improved quality Enhanced audio-visual alignment with better lip sync accuracy and natural facial movements.
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Audio-driven generation Automatically generates video with synchronized lip movements from audio input.
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Optional reference image Provide a portrait image to use as the base, or let the model use a default portrait.
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Flexible resolution Supports 480p, 720p, and 1080p outputs to balance quality and cost.
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Automatic duration Video length automatically matches audio duration (5-20 seconds).
Parameters
| Parameter | Required | Description |
|---|---|---|
| audio | Yes | Audio file URL - duration determines video length (5-20s) |
| image | No | Reference portrait image (optional) |
| prompt | No | Text prompt to guide generation style and motion |
| resolution | No | Output resolution: 480p, 720p (default), or 1080p |
| seed | No | Random seed for reproducibility (-1 for random) |
Resolution Options
| Resolution | Best For |
|---|---|
| 480p | Fast previews, iteration, lowest cost |
| 720p | Balanced quality and cost (default) |
| 1080p | Final delivery, maximum detail |
How to Use
- Upload your audio — the audio track that drives the video (5-20 seconds).
- Upload reference image (optional) — a portrait to use as the base character.
- Add prompt (optional) — describe the style or motion you want.
- Select resolution — 480p for iteration, 720p for balance, 1080p for final output.
- Run — submit and download the lip-synced video.
Pricing
Pricing is based on audio duration (automatically detected):
| Resolution | 5s | 10s | 15s | 20s |
|---|---|---|---|---|
| 480p | $0.10 | $0.20 | $0.30 | $0.40 |
| 720p | $0.15 | $0.30 | $0.45 | $0.60 |
| 1080p | $0.20 | $0.40 | $0.60 | $0.80 |
Best Use Cases
- Talking Head Videos — Generate spokesperson videos from audio recordings.
- Content Localization — Create videos in multiple languages from audio tracks.
- Virtual Presenters — Generate AI presenters for training, marketing, or education.
- Audio-to-Video — Convert podcasts or audio content into video format.
- Character Animation — Bring portraits to life with synchronized speech.
Pro Tips
- Audio quality directly affects lip sync accuracy - use clear audio.
- Provide a frontal portrait image for best results.
- Use prompt to guide facial expressions and style.
- Iterate at 480p to verify results, then render at higher resolution.
- Audio duration is automatically detected - no need to specify manually.
Notes
- Audio duration must be between 5-20 seconds.
- If no reference image is provided, a default portrait will be used.
- Video length automatically matches audio duration.
Related Models
- LTX-2.3 Text-to-Video — Generate video with audio from text.
- LTX-2.3 Image-to-Video — Animate images with synchronized audio.