About This Site
First open-source 4K AI model for synchronized video and audio generation. LTX-2 is a state-of-the-art, production-ready AI foundation model developed by Lightricks for generating synchronized audiovisual content. It is the first fully open-source, open-weights AI model that supports native 4K resolution (2160p) video generation at up to 50 FPS, along with synchronized audio generation (including dialogue, ambient sounds, and music). Powered by a 19B parameter Diffusion Transformer (DiT) architecture, LTX-2 supports text-to-video and image-to-video generation, creating clips up to 20 seconds long. It is optimized for NVIDIA GPUs, offering 3x faster performance on RTX 50 Series.
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Key Features AI
Core Features
Native 4K Resolution (2160p) at up to 50 FPS
First open-weights model for synchronized audio and video generation
Supports Text-to-Video and Image-to-Video transformation
Generates extended clips up to 20 seconds with temporal coherence
Fully open-source under Apache 2.0 license (weights, code, inference pipeline)
NVIDIA Optimized for up to 3x faster performance and VRAM reduction
Advantages
Fully open-source (Apache 2.0) allowing for free commercial use, local deployment, and custom fine-tuning (LoRA)
Industry-leading 4K resolution (2160p) and 50 FPS frame rate support
Native synchronized audio generation in a single inference pass
Highly optimized for NVIDIA GPUs (up to 3x faster performance)
Generates long clips up to 20 seconds
缺点：High resource demands are required for unoptimized runs (Recommended: 16GB+ VRAM)
缺点：Audio quality can decrease without explicit speech cues in prompts
缺点：May inherit biases from training data
缺点：Not designed for generating factual information
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