LTX 2 19B Image to Video | Fast Image-to-Video API

LTX-2 19B Image-to-Video with Audio

LTX-2 is the first DiT-based (Diffusion Transformer) audio-video foundation model, capable of generating synchronized audio and video from a reference image and text prompt. With 19 billion parameters, it animates your input image into a high-fidelity video clip with natural sound that matches the motion — no separate audio production needed.

Why Choose This?

Image-conditioned video with audio Transforms a static image into a moving video with synchronized audio generated in a single pass.
Preserves input composition Maintains the subject, framing, and lighting of your reference image while adding natural motion.
High-fidelity output Leverages a 19B-parameter DiT architecture for detailed, temporally consistent video with minimal flickering.
Flexible resolution Supports 480p, 720p, and 1080p outputs to balance quality and cost.
Variable duration Generate clips from 5 to 20 seconds.

Parameters

Parameter	Required	Description
image	Yes	Reference image to animate (JPG or PNG)
prompt	Yes	Text description of motion, action, and audio cues
resolution	No	Output resolution: 480p, 720p (default), or 1080p
duration	No	Video length in seconds (5-20)
seed	No	Random seed for reproducibility (-1 for random)

Resolution Options

Resolution	Best For
480p	Fast previews, iteration, lowest cost
720p	Balanced quality and cost (default)
1080p	Final delivery, maximum detail

How to Use

Upload your image — the reference image that defines subject, composition, and lighting.
Write your prompt — describe the motion, camera movement, and audio cues.
Select resolution — 480p for iteration, 720p for balance, 1080p for final output.
Set duration — 5-20 seconds based on your content needs.
Run — submit and download the animated video with synchronized audio.

Pricing

Resolution	5s	10s	15s	20s
480p	$0.06	$0.12	$0.18	$0.24
720p	$0.08	$0.16	$0.24	$0.32
1080p	$0.12	$0.24	$0.36	$0.48

Billing Rules

Base price: $0.08 (720p, 5 seconds)
Resolution multiplier: 480p = 0.75×, 720p = 1×, 1080p = 1.5×
Duration: Scales linearly (per 5 seconds)
Total cost = duration × $0.08 × resolution_multiplier / 5

Best Use Cases

Product Animation — Bring product photos to life with subtle motion and ambient audio.
Portrait Animation — Animate headshots and portraits with natural movement.
Social Media — Create engaging animated content from static images.
Marketing — Transform key visuals into video ads with cohesive sound.
Storytelling — Animate storyboard frames or concept art.

Pro Tips

Audio is automatic — sound is generated based on visual motion and prompt context.
Describe specific audio when needed (e.g., "rain," "jazz," "crowd noise").
Use high-quality, sharp, well-exposed images for best results.
Keep motion prompts simple — one clear action per prompt yields better results.
Iterate at 480p to dial in motion, then render at higher resolution for final output.
Use fixed seed when comparing prompt variations to isolate changes.

Notes

Maximum video duration is 20 seconds.
The aspect ratio of output video is influenced by your input image.
For longer content, generate multiple clips and edit together.

Related Models

LTX-2 19B Text-to-Video — Generate video with audio from text only, no input image required.
Wan 2.5 I2V — Alternative image-to-video with the Wan ecosystem.
Kling 2.6 I2V — Kuaishou's latest image-to-video generation model.
Veo 3.1 I2V — Google's image-to-video model with high fidelity.

Ltx 2 19b Image To Video API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/wavespeed-ai/ltx-2-19b/image-to-video 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 Image To Video below.

HTTP example

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

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

Ltx 2 19b Image To Video API — Frequently asked questions

What is the Ltx 2 19b Image To Video API?

Ltx 2 19b Image To Video is a WaveSpeedAI model for video generation from images, exposed as a REST API on WaveSpeedAI. LTX-2 19b is the first DiT-based audio-video foundation model with synchronized audio and video, high fidelity, multiple performance modes, and production-ready outputs in one model. 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 Image To Video 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-image-to-video.

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

Ltx 2 19b Image To Video starts at $0.080 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 Image To Video accept?

Key inputs: `prompt`, `image`, `resolution`, `duration`, `seed`. 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-image-to-video.

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

Average end-to-end generation time on WaveSpeedAI is around 63 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 Image To Video 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.

EjemplosVer todo

Modelos relacionados

README