LTX-2 API Integration Guide: Build Reliable Video Apps
Building an app with LTX-2 is exciting, but video generation is different from text. It takes time and high-performance hardware. To build a product that users love, you need a stable way to communicate with the model.
This guide explains how to integrate LTX-2 into your software like a pro, keeping it simple and reliable.
- The Secrets of Stable Generation
Since video generation can take 30 seconds or more, you should never make your users wait on a "loading" screen that might timeout.
The best way is the Async Pattern:
Submit: Your app sends the prompt to the API.
Queue: The API says "Got it! Here is your Job ID."
Magic Happens: Our GPUs generate your video in the background.
Finish: The API notifies your app when the file is ready.
LTX-2 API Architecture Diagram
- Key API Steps
Step 1: Create a Video
You simply tell the API what you want.
Request Example:
{
"prompt": "A peaceful sunset over a calm ocean, 4k, cinematic",
"width": 768,
"height": 432,
"duration": 5
}
Step 2: Get the result
Once the video is done, the API will provide a Download URL. Tip: Always serve these videos via a CDN so they play smoothly for your users anywhere in the world.
- Top Parameters to Control Quality
You don't need to be a scientist to tune LTX-2. Just focus on these 4 settings:
Prompt: Be specific. Instead of "a car," try "a red sports car driving fast on a neon city street."
Steps (20-40): Think of this as "detail level." More steps usually mean better quality but slower speed.
Guidance (3-7): This tells the AI how strictly to follow your words.
Seed: If you find a video you like, save the "Seed" number. Using the same seed lets you recreate the same style later.
4. Making it "Production Ready"
To make your app professional, consider these two simple features:
Idempotency (Double-Click Protection)
If a user clicks "Generate" twice because their internet lagged, you don't want to waste money generating the same video twice. Use a unique "Key" for each request so the API knows it's a duplicate and doesn't start a new task.
Smart Retries
Sometimes the internet flickers. If the API returns a "Server Busy" error, don't just show an error message. Your app should wait 2 seconds and try again automatically. This makes your app feel much more stable.
- Security & Safety
Protect your API Key: Never put your key in the frontend code! Always call the API from your backend server.
Set Limits: Limit how many videos a user can make per hour to manage your costs.
Content Filtering: Ensure prompts are safe and follow your community guidelines by using a basic keyword filter.
Summary
Integrating LTX-2 is simple once you understand the "submit and wait" flow. By handling jobs asynchronously and keeping an eye on your parameters, you can build a powerful AI video tool in no time.
Ready to start? Check out our
Playground
to test prompts manually before you start coding!
FAQ
Why is the generation slow? Video AI requires massive GPU power. If many people are using the system, your job waits in a queue. Using the Async pattern ensures your app handles this waiting time gracefully.
How do I stop duplicate charges? Always send a unique ID with your request. Our system will recognize if you are sending the same request twice and won't charge you for the second one.
Can I change the video resolution? Yes. LTX-2 supports various sizes, but remember: higher resolution takes longer to generate and uses more resources.