LTX-2.3 Video-to-Video | AI Video Animation With Synchronized Audio

LTX-2.3 Video Extend

LTX-2.3 Video Extend seamlessly extends existing videos by generating additional frames that naturally continue your content. Upload a video clip and specify how many seconds to add — the model generates smooth, coherent footage that matches the original motion, style, and atmosphere.

Why Choose This?

Seamless extension Generates new frames that naturally continue the motion and style of your original video.
Flexible duration Extend videos by 1 to 20 seconds based on your needs.
Prompt guidance Optional prompts to describe how the video should continue.
LTX-2.3 quality Built on the improved LTX-2.3 architecture for better temporal consistency.
Simple pricing Straightforward per-second billing at $0.10/second.
Prompt Enhancer Built-in tool to automatically improve your continuation descriptions.

Parameters

Parameter	Required	Description
video	Yes	Source video to extend (URL or upload)
duration	No	Extension length in seconds (1–20, default: 6)
prompt	No	Describe how the video should continue

How to Use

Upload your video — provide the source video you want to extend.
Set duration — choose how many seconds to extend (1–20 seconds).
Write your prompt (optional) — describe the motion, action, or scene changes.
Use Prompt Enhancer (optional) — click to refine your description.
Run — submit and download your extended video.

Pricing

Duration	Cost
1 s	$0.10
5 s	$0.50
10 s	$1.00
20 s	$2.00

Billing Rules

Rate: $0.10 per second
Duration range: 1–20 seconds

Best Use Cases

Content Extension — Extend short clips into longer sequences for storytelling.
Scene Continuation — Continue scenes beyond their original capture.
Social Media — Transform brief moments into full-length videos.
Film & Production — Extend establishing shots or B-roll footage.
Loop Creation — Generate additional frames for seamless video loops.

Pro Tips

Use detailed prompts describing how the motion, camera, and scene should continue.
For best results, use source videos with clear motion direction that can be naturally continued.
Start with shorter extensions to test results before generating longer clips.
The model maintains temporal consistency with the original footage.

Notes

Video is required; prompt is optional but recommended for better results.
Duration range: 1–20 seconds.
Ensure uploaded video URLs are publicly accessible.

Related Models

LTX-2.3 Text-to-Video — Generate video from text with synchronized audio.
LTX-2.3 Image-to-Video — Animate images with synchronized audio.

LTX-2.3 is a DiT-based audio-video foundation model designed to generate synchronized video and audio within a single model, with improved audio and visual quality as well as enhanced prompt adherence. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

示例查看全部

README