The integration of the LTX-2 19B suite into Scenario represents a landmark achievement in multimodal AI generation. Unlike previous models that generated audio as an afterthought, the LTX-2 architecture is designed to treat audio and video as a single, synchronized stream. This allows creators to generate cinematic-grade content with realistic soundscapes and flawless lip-sync in a single step.
Below is the definitive guide to mastering this new generation of video models.
1. The LTX-2 19B Family
The LTX-2 suite is comprised of three primary variants, each optimized for different stages of the creative process:
LTX-2 19B : The flagship model featuring 19 billion parameters. It is the premier choice for final production, providing the highest visual fidelity and deep control over advanced parameters like Diffusion Steps and Guidance.
LTX-2 19B Fast: A distilled version of the core model built for extreme speed. It is perfect for rapid ideation and mobile-friendly workflows, allowing you to generate 4K previews in seconds without losing core movement consistency.
2. Technical Specifications: Versatility and Resolution
The LTX-2 suite is built to handle professional broadcast standards, offering complete flexibility in format and output quality.
Resolution and Frame Rate
Creators can choose from several native resolutions to match their target platform:
4K (2160p): Maximum cinematic fidelity for high-end displays.
HD (1080p / 1440p): Standard professional formats for web and social media.
Smooth Motion: Support for up to 50 FPS, providing lifelike fluidity that far exceeds older generation AI models.
Aspect Ratio Flexibility
The interface supports all modern social and cinematic formats:
Cinematic: 21:9, 16:9.
Social/Mobile: 9:16, 3:4.
Standard: 4:3, 1:1.
3. Advanced Controls: Directing the AI
Beyond simple prompting, Scenario provides granular controls to manage how the AI interprets your vision.
Camera Motion Presets: Instead of relying on text descriptions, you can lock camera movements to specific axes, including Dolly (In/Out/Left/Right) and Jib (Up/Down).
Pro Settings: The Standard model allows you to adjust the number of Steps (default 40) and Guidance (default 3) to balance detail levels and prompt adherence.
Negative Prompting: Available in the 19B model to explicitly exclude unwanted elements from the video and audio output.
4. Native Audio and Visual Synergy
The defining feature of the LTX-2 suite is its multimodal engine, which synchronizes sound with movement automatically.
Smarter Understanding: Powered by the Gemma-3 text encoder, the model follows complex narrative instructions and understands subtle relationships between characters and their environment.
Automated Sound Design: When the Generate Audio toggle is active, the model analyzes the movement in the frame—such as footsteps, rustling leaves, or engine roars—and generates a perfectly timed audio track.
Image-to-Video Conditioning: By using the First Frame slot, you can transform static artwork into a dynamic scene, ensuring that every detail of the original image is preserved as it comes to life with motion and sound.
Was this helpful?