# Run and deploy your AI Studio app This contains everything you need to run your app locally. View your app in AI Studio: https://ai.studio/apps/a38a3cd5-7f82-49f0-a26e-99be4d77f863 ## Run Locally **Prerequisites:** Node.js, system `ffmpeg`, and system `ffprobe` 1. Install dependencies: `npm install` 2. Configure [.env](.env) with: `ARK_API_KEY` `GEMINI_API_KEY` `MINIMAX_API_KEY` 3. Optional defaults: `DEFAULT_LLM_PROVIDER=doubao` `DOUBAO_MODEL=doubao-seed-2-0-pro-260215` `FFMPEG_PATH=/path/to/ffmpeg` (optional) `FFPROBE_PATH=/path/to/ffprobe` (optional) 4. Run the app: `npm run dev` ## Model Switching 1. Subtitle generation now runs through the server and supports `Doubao` and `Gemini`. 2. The editor shows an `LLM` selector and defaults to `Doubao`. 3. `TTS` stays fixed on `MiniMax` regardless of the selected LLM. 4. All provider keys are read from `.env`; the browser no longer calls LLM providers directly. ## Subtitle Generation 1. Subtitle generation is now driven by server-side multimodal LLM calls on the uploaded video file. 2. No separate local alignment/ASR backend is required for `/api/generate-subtitles`.