LTX-2 AI Video Generator
LTX-2 is Lightricks' open-source video model that generates 4K videos with synchronized audio in one unified process. Create up to 10-second clips at 50fps with text-to-video, image-to-video, and multi-keyframe modes. The first complete open-source foundation model for professional video production.
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LTX-2: 4K Video Generation with Built-In Audio
LTX-2 creates stunning 4K videos with synchronized sound in a single generation—no separate audio editing needed.
Audio and Video Created Together
Unlike other video generators that only produce silent clips, LTX-2 generates matching audio alongside your visuals. Motion, dialogue, ambient sounds, and music are all created in one unified process. Your characters speak with natural timing, footsteps match walking movements, and background music fits the scene—all without any manual syncing or post-production audio work.
True 4K Quality at 50 Frames Per Second
LTX-2 generates videos at native 4K resolution (3840×2160) with up to 50 frames per second—matching broadcast and cinema standards. Every frame captures fine details like fabric textures, facial expressions, and environmental lighting. Whether you need landscape scenes for presentations or portrait videos for social content, LTX 2 delivers crisp, professional-grade output.
Control Your Video with Multiple Keyframes
Set multiple reference points throughout your video, and LTX-2 maintains consistency while smoothly animating between them. Unlike models that only accept a start frame, LTX 2 lets you define how your video progresses at any point in the sequence. This gives you precise creative control over complex narratives, character movements, and scene transitions without frame-by-frame editing.
Multiple Input Types for Maximum Flexibility
LTX-2 accepts text descriptions, images, audio files, depth maps, and reference videos—or any combination of these. Start from a written prompt, animate a still photo, or guide generation with existing footage. The model understands all these inputs together, letting you shape your vision with the guidance method that works best for each project.
Generate 4K Videos in 3 Steps
From your idea to production-ready 4K video with synchronized audio—no editing experience required
Choose Your Generation Mode
Select from Text-to-Video to create scenes from descriptions, Image-to-Video to animate still photos, or use multi-keyframe mode for precise control over your video's progression. You can also upload reference videos or depth maps for additional guidance.
Configure Your Output
Set your video duration (6, 8, or 10 seconds), choose resolution (up to 4K), and select aspect ratio (16:9 for landscape or 9:16 for portrait). Describe any audio you want—speech, ambient sounds, or music—and the model generates it alongside the visuals.
Generate and Download
Click generate and receive your 4K video with synchronized audio. LTX-2 outputs production-ready MP4 files compatible with all major editing software and social platforms. Fast mode delivers quick previews while Ultra mode produces cinema-quality results.
Why LTX-2 Stands Out
Key advantages that make LTX-2 the complete solution for AI video creation.
🔊 Sound and Vision in One Generation
Most video generators create silent clips that need separate audio work. LTX-2 produces synchronized sound—dialogue, music, ambient noise—alongside the video. No audio tools, no manual syncing, no extra steps.
đź“ş Broadcast-Quality 4K at 50fps
While many tools max out at 1080p with choppy motion, LTX 2 delivers true 4K resolution at 50 frames per second. That's cinema and broadcast standard quality, ready for professional use without upscaling.
⚡ Half the Computing Cost
LTX-2's optimized architecture uses up to 50% less computing resources than comparable models. Get the same quality videos faster and more affordably—whether generating on cloud services or your own hardware.
🎯 Multi-Keyframe Control
Define multiple reference points in your video and LTX 2 interpolates smoothly between them. Previous models only accepted start or end frames—this gives you precise control over every part of your narrative.
🎬 Three Quality Modes for Every Need
Fast mode for quick concept testing, Pro mode for balanced production quality, Ultra mode for maximum 4K fidelity. Choose the right speed-quality balance for each stage of your creative process.
📱 Works on Consumer Hardware
LTX-2 runs on regular graphics cards—not just expensive enterprise systems. Create professional videos on your own computer with Fast and Pro modes, no cloud dependency required.
LTX-2 FAQ
Common questions about LTX-2 AI video generator—capabilities, formats, quality settings, and commercial use.
What resolutions and frame rates does LTX-2 support?
LTX-2 generates videos at native 4K resolution (3840Ă—2160) with up to 50 frames per second in Ultra mode. Lower resolutions are available for faster iteration during the creative process. Both 16:9 landscape and 9:16 portrait aspect ratios are supported for YouTube, TikTok, Instagram, and other platforms.
How long can LTX-2 videos be?
LTX-2 currently supports video clips up to 10 seconds with synchronized audio. You can choose 6, 8, or 10-second durations. For longer content, generate multiple clips and combine them in your video editor. Extended duration options are planned for future updates.
What's the difference between Fast, Pro, and Ultra modes?
Fast mode prioritizes speed for quick concept testing and iteration. Pro mode balances quality and speed for standard production work. Ultra mode delivers maximum 4K fidelity at 50fps with full audio synchronization—best for final production-ready output.
How does multi-keyframe conditioning work?
You can set multiple reference images at different points in your video sequence. LTX-2 maintains consistency at these keyframes while creating smooth transitions between them. This gives you control over how scenes evolve, how characters move, and how the visual style progresses throughout the clip.
What file formats does LTX-2 accept and output?
LTX-2 accepts JPG, PNG, and WebP images for image-to-video generation. For reference videos, MP4 format is supported. Audio inputs can be WAV or MP3 files. All generated videos are output as MP4 files compatible with all major editing software and social platforms.
Can I use LTX-2 generated videos for commercial projects?
Yes. Videos created with LTX-2 can be used for commercial purposes including marketing, advertising, social media content, and client work. The model is released with commercial-friendly licensing, allowing you to use generated content in business projects without additional fees.