LTX 2 19B Text to Video LoRA | Custom LoRA Image API

LTX-2 19B Text-to-Video LoRA

LTX-2 Text-to-Video LoRA generates customized videos from text prompts with synchronized audio and full LoRA support. Apply up to 3 custom LoRA adapters for style personalization — perfect for branded content, custom characters, and unique visual styles.

Looking for the standard version? Try LTX-2 19B Text-to-Video without LoRA support.

Why Choose This?

LoRA support Apply up to 3 custom LoRA adapters to personalize style, characters, or visual aesthetics.
Synchronized audio-video generation Outputs video with matching audio in a single pass — footsteps, ambient sounds, and environmental audio fit the visual content.
High-fidelity visuals Leverages a 19B-parameter DiT architecture for detailed, temporally consistent video.
Flexible resolution and aspect ratio Supports 480p, 720p, and 1080p in both 16:9 (landscape) and 9:16 (vertical) formats.
Variable duration Generate clips from 5 to 20 seconds.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the scene, action, and audio cues
resolution	No	Output resolution: 480p, 720p (default), or 1080p
aspect_ratio	No	Output format: 16:9 (default) or 9:16
duration	No	Video length in seconds (5-20, default: 5)
loras	No	List of LoRA adapters to apply (up to 3)
seed	No	Random seed for reproducibility (-1 for random)

LoRA Format

Each LoRA in the loras array has:

path (required) — URL to the LoRA weights file
scale (optional) — Weight multiplier from 0-4, default 1

How to Use

Write your prompt — describe scene, action, style, and audio cues.
Add LoRAs — click "+ Add Item" to include custom LoRA adapters.
Adjust LoRA scale — use 0.5-1.0 for subtle effects, 1.0-2.0 for stronger influence.
Set resolution and aspect ratio — match your target platform.
Set duration — start short (5s) to test, increase for final renders.
Run — submit and download the generated video.

Pricing

Resolution	5s	10s	15s	20s
480p	$0.075	$0.15	$0.225	$0.30
720p	$0.10	$0.20	$0.30	$0.40
1080p	$0.15	$0.30	$0.45	$0.60

Billing Rules

Base price: $0.10 (720p, 5 seconds)
Resolution multiplier: 480p = 0.75×, 720p = 1×, 1080p = 1.5×
Duration: Scales linearly (per 5 seconds)
Total cost = duration × $0.10 × resolution_multiplier / 5

Best Use Cases

Custom Character Animation — Apply character LoRAs for consistent identity across videos.
Brand Content — Use trained LoRAs for consistent brand visual identity.
Artistic Styles — Apply style LoRAs for anime, painterly, or other aesthetics.
Social Media Content — Create unique vertical (9:16) content with custom styles.

Pro Tips

Start with scale 1.0 and adjust up or down based on results.
Combine LoRAs carefully — multiple LoRAs can conflict; test combinations.
Match LoRA to content — use character LoRAs for character content, style LoRAs for aesthetics.
Audio adapts automatically — the model generates appropriate audio even with custom styles.
If your LoRA uses trigger words, include them in your prompt.

Notes

Maximum video duration is 20 seconds.
Up to 3 LoRAs can be applied simultaneously.
LoRA version pricing is 25% higher than standard version.

Related Models

LTX-2 19B Text-to-Video — Standard version without LoRA support.
LTX-2 19B Image-to-Video LoRA — Image-to-video with LoRA support.
LTX-2 19B Image-to-Video — Animate images without LoRA.

Reference

How to use LoRA?

Ltx 2 19b Text To Video Lora API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/wavespeed-ai/ltx-2-19b/text-to-video-lora with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Ltx 2 19b Text To Video Lora below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/ltx-2-19b/text-to-video-lora" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "duration": 5,
    "seed": -1
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("wavespeed-ai/ltx-2-19b/text-to-video-lora", {
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "resolution": "720p",
        "aspect_ratio": "16:9",
        "duration": 5,
        "seed": -1
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "wavespeed-ai/ltx-2-19b/text-to-video-lora",
    {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "duration": 5,
    "seed": -1
}
)

print(output["outputs"][0])  # → URL of the generated output

Ltx 2 19b Text To Video Lora API — Frequently asked questions

What is the Ltx 2 19b Text To Video Lora API?

Ltx 2 19b Text To Video Lora is a WaveSpeedAI model for AI inference, exposed as a REST API on WaveSpeedAI. LTX-2 19b Text-to-Video LoRA is the first DiT-based audio-video foundation model with synchronized audio and video generation. This LoRA version supports custom style adapters for personalized video generation. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Ltx 2 19b Text To Video Lora API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/wavespeed-ai/ltx-2-19b-text-to-video-lora.

How much does Ltx 2 19b Text To Video Lora cost per run?

Ltx 2 19b Text To Video Lora starts at $0.10 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Ltx 2 19b Text To Video Lora accept?

Key inputs: `prompt`, `aspect_ratio`, `resolution`, `duration`, `seed`, `loras`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/wavespeed-ai/ltx-2-19b-text-to-video-lora.

How long does Ltx 2 19b Text To Video Lora take to generate?

Average end-to-end generation time on WaveSpeedAI is around 129 seconds per request — measured across recent runs. Queue time scales with global demand; live status is visible in the prediction record.

Can I use Ltx 2 19b Text To Video Lora outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (WaveSpeedAI). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

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