What is LTX-2 and how does it work?

LTX-2 is Lightricks' next-generation open-source AI video foundation model. It uses a DiT (Diffusion-Transformer) hybrid architecture with space-time modeling to generate high-fidelity videos from text prompts or images. The model creates synchronized audio and video in a single pass, eliminating the need for separate audio stitching or manual syncing. LTX-2 supports native 4K resolution at up to 50 FPS with clips up to 20 seconds long.

What resolution and quality can LTX-2 generate?

LTX-2 supports multiple resolutions including 720p HD, 1080p Full HD, 1440p QHD, and native 4K Ultra HD (3840×2160). The model can generate videos at frame rates up to 50 FPS, delivering smooth cinematic motion. Maximum video duration is 20 seconds of continuous synchronized audio-video generation.

Can I use LTX-2 with ComfyUI locally?

Yes! LTX-2 has native ComfyUI integration. You can download the model weights from Hugging Face and use them with ComfyUI-LTXVideo nodes for local generation. For optimal performance, NVIDIA recommends 12GB+ VRAM for 720p/1080p and 24GB+ for 4K generation. The model supports NVFP8 quantization for reduced memory usage and faster inference on RTX GPUs.

What GPU and VRAM do I need to run LTX-2 locally?

Minimum requirements: 12GB VRAM for 720p-1080p at 24-30 FPS. Recommended: 16-24GB VRAM (RTX 4080, RTX 3090) for comfortable 1080p-1440p generation. Ideal: 24GB+ VRAM (RTX 4090, RTX 5090) for native 4K at 50 FPS. NVIDIA has optimized NVFP8 weights that reduce VRAM by 40% and improve performance by 2x on RTX 40/50 series GPUs.

How does LTX-2 compare to other AI video generators?

LTX-2 is the first open-source model combining synchronized audio-video generation, native 4K resolution, and 50 FPS in one system. Compared to Runway, Pika, and Kling, LTX-2 offers up to 50% lower compute costs and full open-source transparency. It excels in visual fidelity and runs efficiently on consumer GPUs, making professional video creation accessible to independent creators.

Can I train custom LoRA models with LTX-2?

Yes! LTX-2 supports LoRA fine-tuning for custom styles, motion patterns, and character likeness. Training for motion, style, or likeness can take less than an hour in many settings. The LTX-2 Trainer provides comprehensive documentation for full fine-tuning, LoRA training, and IC-LoRA (Identity-Consistent LoRA) workflows.

LTX-2 Video Generator | Free AI Text to Video & Image to Video Tool Online

Why Choose LTX-2 Video Generator?

Experience the next generation of AI video creation with cutting-edge features built for professionals and creators alike.

Native 4K Resolution

Generate stunning videos at true 4K (3840×2160) resolution. Perfect for professional content, marketing campaigns, and broadcast-quality productions.

Synchronized Audio

LTX-2 generates video and audio together in one unified pass. Motion, dialogue, ambience, and music are naturally aligned without manual syncing.

Lightning Fast Generation

Generate a 6-second HD video in just 5 seconds of compute time. Up to 50% lower compute cost compared to competing AI video models.

Image to Video

Transform any static image into dynamic video content. Perfect for animating artwork, photos, product shots, and concept designs.

Precise Creative Control

Multi-keyframe conditioning, 3D camera logic, and LoRA fine-tuning support give you complete control over every aspect of your video.

Open Source Foundation

Built on Lightricks' open-source LTX 2 model. Full transparency with model weights available on GitHub and Hugging Face for customization.

LTX-2 Technical Specifications

Industry-leading performance metrics that set the standard for AI video generation.

Maximum Resolution

FPS Frame Rate

20s

Max Video Length

50%

Lower Compute Cost

How to Generate Videos with LTX-2

Create professional AI videos in three simple steps. No technical knowledge required.

Enter Your Prompt

Describe the video you want to create. Include details about the scene, action, camera movement, and mood for best results.

Choose Settings

Select your preferred duration (up to 20 seconds) and enable audio sync.

Generate & Download

Click generate and watch LTX-2 AI create your video with synchronized audio. Download in high quality for immediate use.

Perfect For Every Creator

LTX-2 powers diverse creative workflows across industries.

📱Social Media Content

🎥Film & TV Production

📢Marketing & Advertising

🎮Game Development

📚Educational Content

🎨Art & Animation

🏢Corporate Videos

🎵Music Videos

Frequently Asked Questions

Everything you need to know about LTX-2 AI Video Generator.

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Join thousands of creators using LTX-2 to bring their visions to life.

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LTX-2 AI Video Generator