LTX-Desktop

LTX Desktop is an open-source desktop application for generating videos using LTX AI models, made by Lightricks. It lets you generate videos from text descriptions, from images, or from audio, and also supports editing existing video clips through a timeline-based video editor interface.

The app has two operating modes depending on your hardware. On Windows or Linux machines with an NVIDIA GPU that has 16GB or more of video memory, it runs the AI models locally — downloading the model weights to your computer and processing everything on your own GPU. On macOS, or on Windows and Linux machines without a powerful enough GPU, it falls back to API mode, which sends generation requests to Lightricks' cloud service and requires an API key. Text encoding — the step that converts your written prompt into a format the model understands — is free even in API mode; only actual video generation through the API costs money.

The hardware requirements for local mode are significant: 16GB of GPU memory, at least 16GB of system RAM (32GB recommended), and over 160GB of free disk space to hold model weights, the Python environment, and generated outputs.

Under the hood the app has three layers: a TypeScript and React frontend, an Electron shell that handles OS integration like file dialogs and process management, and a Python FastAPI backend that runs locally and orchestrates model loading and GPU execution. The tech stack is TypeScript and Python.