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?

Improved quality Enhanced audio-visual alignment with better lip sync accuracy and natural facial movements.
Audio-driven generation Automatically generates video with synchronized lip movements from audio input.
Optional reference image Provide a portrait image to use as the base, or let the model use a default portrait.
Flexible resolution Supports 480p, 720p, and 1080p outputs to balance quality and cost.
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.

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.

サンプルすべて表示

README