ltx/ltx-2/fast/text-to-video

Generate synchronized 4K videos fast from text with realistic motion, cinematic sound, and flexible speed-fidelity modes for creators, studios, and marketers seeking seamless audiovisual storytelling.

Introduction To LTX 2 AI Video Generator

LTX 2 is the next evolution in AI-powered text-to-video generation. Built as a multimodal foundation model, it unifies audio and visual creation in a single streamlined process. You can turn text or image prompts into cinematic quality clips with synchronized sound, realistic motion, and native 4K resolution at up to 50 frames per second. LTX 2 introduces three performance modes—Fast, Pro, and Ultra—so you can balance speed and fidelity while working efficiently even on consumer-grade GPUs. Designed with openness in mind, its code, weights, and benchmarks are publicly available, providing creators transparent access to innovation. LTX 2 text-to-video generation tool lets you create 10-second synchronized audiovisual clips that feel cinematic without heavy production needs. It’s made for creators, studios, and marketers who value control, real-time creativity, and seamless audio-video output for storytelling, ads, and VFX work.

Examples Of LTX 2 Video Generator In Action

What makes LTX 2 Video Generator stand out

LTX 2 is a fast text-to-video system focused on coherent motion, scene stability, and synchronized sound. Built for streamlined creative pipelines, LTX 2 Video Generator balances speed and fidelity with adjustable frame rates and resolutions up to 2160p for crisp 16:9 delivery. LTX 2 prioritizes temporal consistency so subjects hold shape and perspective across frames, minimizing flicker and drift. With native audio generation, LTX 2 aligns ambience and effects to visual timing for cohesive storytelling. For production efficiency, LTX 2 exposes clear controls for duration, resolution, and FPS, enabling predictable renders within known constraints. Key capabilities:

Text-conditioned synthesis: LTX 2 Video Generator supports text-driven 16:9 video at 1080p, 1440p, or 2160p and 25 or 50 FPS.
Flexible speed-fidelity modes let you trade render speed for detail to match brief and deadline.
Temporal coherence: preserves layout, subject proportions, and camera intent to reduce jitter.
Audio on demand: synchronized generative sound when generate_audio is true; silent renders when false.
Controlled durations: 6-20 seconds; clips over 10 seconds require 25 FPS at 1080p.
Deterministic controls: explicit duration, resolution, and FPS parameters simplify iteration; LTX 2 enforces clear constraints for longer clips.

Prompting guide for LTX 2

Begin by specifying subject, action, camera movement, environment, and tone. In LTX 2, set duration, resolution, FPS, and the generate_audio toggle to match delivery needs. Keep descriptions concrete with pacing cues and camera verbs. For clips longer than 10 s, LTX 2 requires 25 FPS at 1080p; plan story beats to fit that cadence. When sound is needed, enable audio so LTX 2 Video Generator aligns ambience and effects to moments; when not, disable for clean plates. To maintain consistency, keep scene anchors stable and iterate in short steps; LTX 2 responds well to focused revisions and clear constraints.

Example prompts for LTX 2 Video Generator:

High energy street chase, handheld, wet asphalt reflections, neon rain. Parameters: duration=8, resolution=2160p, fps=50, generate_audio=true
Calm coastal sunrise, slow dolly, gulls and gentle waves. Parameters: duration=10, resolution=1440p, fps=25, generate_audio=true
Studio product spin on matte turntable, clean white sweep. Parameters: duration=6, resolution=1080p, fps=50, generate_audio=false
Futuristic city flythrough, steady gimbal, soft fog, subtle synth. Parameters: duration=12, resolution=1080p, fps=25, generate_audio=true

Pro tips

Be explicit about preserves vs changes; LTX 2 favors clear scope.
Use spatial and temporal cues: left, right, foreground, slow, fast.
Avoid adjective overload; pick 3 to 5 strong descriptors plus a camera verb.
For >10 s clips, LTX 2 Video Generator only supports 1080p at 25 FPS; set expectations early.
Keep parameters fixed between iterations for A/B comparison.

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Frequently Asked Questions

What is LTX 2 and what can its text-to-video feature do?

LTX 2 is an open-source video foundation model developed by Lightricks Ltd that enables users to generate high-quality audiovisual content. Its text-to-video capability transforms written prompts into full 4K video clips with synchronized sound, movement, and ambient effects.

How does LTX 2 differ from earlier versions in text-to-video performance?

LTX 2 offers unified audio and video generation in one pass, meaning users no longer need manual syncing. Compared to prior iterations, its text-to-video system delivers 4K resolution at up to 50 fps, extended clip length, and smoother temporal coherence.

Is LTX 2 free to use, and how is text-to-video generation billed?

LTX 2 can be accessed through the Runcomfy AI Playground using credits. While new users receive free trial credits, ongoing text-to-video generations consume credits based on resolution and performance mode.

Who should use LTX 2 for text-to-video creation?

LTX 2 is designed for independent creators, studios, filmmakers, and educators who need production-grade visuals generated quickly. Its text-to-video system suits creative projects such as storyboards, concept animation, promotional videos, and educational media.

What quality can I expect from LTX 2 text-to-video results?

LTX 2 produces cinematic-quality visuals, supporting native 4K output and up to 50 frames per second. The text-to-video model accurately synchronizes dialogue, motion, and soundscapes for a polished production-grade finish.

What input types does LTX 2 support besides text-to-video?

In addition to text-to-video prompts, LTX 2 can interpret image-to-video inputs, depth maps, and short clips for multimodal generation. This makes it versatile for blending multiple creative cues into a single output.

Is LTX 2 accessible across different devices for text-to-video generation?

Yes, LTX 2's text-to-video feature is available via its web platform and works on both desktop and mobile browsers. Users simply log into Runcomfy’s AI Playground to generate or preview their output.

Are there limitations users should know before generating text-to-video with LTX 2?

While powerful, LTX 2 currently supports clips of up to approximately 10 seconds in its text-to-video mode. Higher quality settings also require more credits and time to render, depending on hardware and performance mode.

How can users give feedback or suggest improvements for LTX 2 text-to-video performance?

Users can email hi@runcomfy.com to share their experience or recommendations for the LTX 2 text-to-video system. Feedback helps refine its creative controls and output reliability.