How to make a large file accessible to external APIs?
Returning a File Response First, to return a file that is saved on disk from a FastAPI backend, you could use FileResponse (in case the file was already fully loaded into memory, see here). For example: from fastapi import FastAPI from fastapi.responses import FileResponse some_file_path = “large-video-file.mp4” app = FastAPI() @app.get(“/”) def main(): return FileResponse(some_file_path) … Read more