The LTX‑2 series is a next‑generation AI video model that unites high‑fidelity visuals with native audio generation. Developed by Lightricks, LTX‑2 delivers 4K video at 50 fps with up to 8‑second sequences. This article focuses on the LTX v2 Pro and LTX v2 Fast models, which are available through Scenario for text‑to‑video and image‑to‑video creation.
1. Model overview
LTX‑2 is built for production workflows with synchronized sound and fine‑grained control over camera motion. Both the Pro and Fast variants share the same technical limits: up to 6 or 8 seconds per clip, 25 or 50 fps, and resolutions of 1920×1080, 2560×1440(2K) or 3840×2160(4K) pixels. The difference lies in their rendering speed and output fidelity.
1.1 LTX v2 Pro
LTX v2 Pro is the default flow for day‑to‑day production. It balances quality and speed, delivering high visual fidelity with relatively fast turnaround times: making it suitable for daily content creation, marketing teams and iterative creative workflows. The Pro flow can produce polished 4K video with native audio, enabling creators to generate professional results.
1.2 LTX v2 Fast
LTX v2 Fast is optimized for responsiveness and ideation. It generates videos quickly at lower cost, which makes it ideal for instant previews, rapid iterations and mobile workflows. Although Fast clips may exhibit slightly lower visual fidelity compared with Pro, they retain core features such as synchronized audio, multi‑modal conditioning and multi‑keyframe control, allowing creators to explore concepts efficiently.
2. Key strengths across the LTX‑2 family
High‑fidelity visuals & audio – LTX‑2 produces 4K video at up to 50 fps with realistic motion and synchronized sound, supporting up to 8‑second sequences.
Low cost per generation – Optimized rendering pipelines and compression make LTX-2 among the most cost-efficient 4K video models currently available.
Fast generation speed – Typical 4K sequences render in seconds, enabling rapid iteration for creative workflows and production pipelines.
Creative flexibility – Supports a wide range of visual styles, from cinematic realism to stylized animation, through prompt-based fine control.
3. Use cases and applications
LTX v2 models cater to a range of professional and creative scenarios:
Film & TV pre-visualisation – Use Pro to produce high-fidelity test shots for cinematography planning, including camera movement, lighting design, and scene choreography.
Marketing & advertising – Generate polished 4K promotional spots, product showcases, or explainer videos with Pro; use Fast for storyboarding and rapid concept validation.
Social media & short-form content – Employ Fast to quickly create engaging, high-impact videos for platforms such as TikTok, Instagram, or YouTube.
Game development & animation – Use Pro to craft cinematic sequences, character animations, or in-engine storytelling moments with realistic motion and lighting.
Education & training – Produce instructional or demonstration videos with synchronized narration using Pro, while iterating efficiently with Fast for content variation.
4. Prompting guide & best practices
Crafting effective prompts is crucial for producing consistent, cinematic results. Lightricks recommends the following guidelines when writing prompts for LTX‑2 models:
Write a single continuous paragraph – separate sentences for each shot with no line breaks; avoid enumerated lists.
Use present‑tense, active verbs – describe what happens on screen (e.g., “camera pans slowly across a sun‑dappled forest”).
Specify camera behaviour – include shot type (close‑up, wide shot), movement (pan, tilt, dolly), speed, and any technical parameters like aperture or lens focal length.
Define physical details – note subject appearance, clothing, props, colors, textures and environment geometry.
Set atmosphere & mood – mention lighting quality, weather conditions, time of day, and soundscape or music genre to guide audio generation.
Ensure smooth temporal flow – describe transitions between shots to maintain continuity, using words like “then” or “as the camera moves…”
Adopt genre‑specific language – tailor your descriptions to genres (e.g., noir, anime, sci‑fi) to influence style and tone.
Be specific with characters – provide names, roles, emotions, and interactions to achieve consistent casting and performance.
Describe audio and sound design – Detail the ambient soundscape, diegetic effects (e.g., footsteps, wind, machinery), dialogue or vocal tone, and the style of background music. This helps the model synchronize motion and sound more naturally.
Additional tips:
Start with shorter durations (6s) when experimenting; once you achieve desired motion and framing, extend to longer lengths.
Keep prompts concise—excessive detail can over‑constrain the model and limit variation; iterate gradually to refine results.
5. Pros and cons summary
5.1 LTX v2 Pro
Pros
Delivers high‑fidelity 4K video with balanced rendering speed.
Suitable for professional production, marketing and long‑form storytelling.
Cons
Higher cost per second than Fast; generation time is longer.
May require more compute resources when pushing 4K at 50 fps.
5.2 LTX v2 Fast
Pros
Rapid generation at lower cost enables quick iterations and mobile workflows.
Shares core features of Pro, including audio support.
Ideal for previews, prototyping and social media content.
Cons
Visual fidelity slightly reduced compared with Pro; final renders may require Pro or Ultra flows for maximum polish.
Reduced compute cost can still be significant when generating at 4K or high FPS for long durations.
6. Limitations & considerations
Clip length & frame rate – While LTX‑2 supports 8‑second clips, creators may need to stitch multiple outputs together for longer narratives; choose 25 fps for a cinematic look or 50 fps for smoother motion.
Audio generation – The model generates background music and sound effects automatically based on prompt context; however, custom soundtracks may require post‑production adjustments.
Commercial licensing – Scenario and LTX Studio provide licences suitable for professional work. Running the open‑source model locally may require adherence to non‑commercial terms in some distributions.
7. Practical Examples
7.1 - Cinematic motion and lighting control with LTX-2 Fast
The following sample demonstrates how a concise, descriptive prompt can produce a dynamic, high-fidelity sequence using LTX-2 Fast. The model effectively handles rapid motion, complex lighting, and subject stability - ideal for testing narrative camera behavior and realism in short sequences.
Prompt example:
A high-speed drone shot captures a surreal scene in a dimly lit subway station, where a woman is flying effortlessly above the ground. She is wearing a flowing, traditional garment with red floral patterns, which billows dramatically around her. Her long, dark hair streams back in the wind, mirroring the rapid forward motion. The camera tracks her from the front, aligned perfectly to her determined gaze. The background streaks past in a blur, with tiled walls and fluorescent lights flashing by to create a tunnel-like effect. Moving shadows dance across her face, while the rhythmic hum of the train and distant station echoes enhance the sense of motion. The shot maintains the woman’s graceful flight through the space, evoking cinematic energy and surreal elegance.
Model: LTX-2 Fast
Resolution: 1080p
Duration: 6 seconds
Audio: Disabled
7.2 - Macro detail and atmospheric sound design with LTX-2 Pro
This sequence highlights LTX-2 Pro’s ability to render photorealistic textures and synchronized ambient audio, ideal for mood-driven storytelling and visual world-building.
Prompt example:
Extreme close-up macro shot of a rain-soaked Tokyo street at night. Neon signs reflect on wet asphalt; droplets splatter on a metal grate as the camera pulls back slowly to reveal a lone umbrella-carrying passerby. Visual style: high-contrast, vibrant neon, slight bokeh background. Sound: heavy raindrops hitting metal and water puddles, distant traffic hum, muffled city chatter, and a soft ambient synth pad underneath.
Model: LTX-2 Pro
Resolution: 1080p
Duration: 8 seconds
Audio: Enabled
7.3 - Cinematic realism and emotional performance with LTX-2 Pro
The following sequence illustrates how LTX-2 Pro captures nuanced emotion and atmospheric tension through precise visual and audio direction.
Prompt example:
The camera opens on a young woman standing in front of an abandoned gas station, her face frozen in shock. She suddenly raises her trembling hands to cover her mouth, eyes widening in sheer horror. The sound of crackling flames grows louder as the camera holds on her terrified expression for a moment. Then, in one fluid motion, the camera rotates around her shoulder to reveal what she is staring at: a car engulfed in fire, thick smoke billowing into the cold air. The flames roar violently, casting an orange glow on the desolate surroundings, contrasting with her pale, frightened face. The shift from her silent panic to the shocking sight of the burning vehicle heightens the sense of dread and cinematic drama, immersing the viewer in the unfolding chaos.
Model: LTX-2 Pro
Resolution: 1080p
Duration: 8 seconds
Audio: Enabled
7.4 - Stylized realism and integrated sound with LTX-2 Pro
This sequence showcases LTX-2 Pro’s ability to combine stylized 3D realism with cinematic lighting, camera control, and synchronized audio — ideal for storytelling, animation, or branded short-form content.
Prompt example:
Medium shot on a neon-lit city street at sunrise. A young futuristic explorer stands confidently in the center of the empty street, wearing a sleek black-and-orange tactical suit with glowing blue visors projecting holographic data. Beside him hovers a small spherical robot companion with expressive LED eyes and chrome plating reflecting the morning light. Towering skyscrapers and colorful holographic billboards frame the background, with light fog and reflections glimmering on the wet pavement. The camera circles slowly around them, capturing both the human and the bot from multiple angles as the sun begins to rise behind the skyline. Audio: gentle hum of hover-traffic in the distance, faint buzz from neon lights, soft wind between buildings, the robot’s digital beeps and mechanical whirs, and an uplifting electronic-orchestral score that swells as the camera completes its orbit — a mix of warm synth pads, arpeggiated tones, and cinematic percussion.
Model: LTX-2 Pro
Resolution: 1080p
Duration: 8 seconds
Audio: Enabled
8. Conclusion
LTX v2 Pro and LTX v2 Fast offer creators a versatile spectrum of speed and quality within the LTX‑2 ecosystem. The Pro flow strikes a balance between high fidelity and manageable rendering time, making it the go‑to choice for professional projects and marketing. The Fast flow excels at rapid prototyping, previews and mobile‑friendly workflows, enabling quick feedback cycles without sacrificing core capabilities. Together, these models empower storytellers to generate synchronized audio‑video sequences with detailed camera control, multi‑modal conditioning and up to 4K resolution
Was this helpful?