DeleAlliFan/Media-Downloader ? reverse-engineered prompt

Build me a simple media downloader tool in Python that can download media and save it locally, with ffmpeg support for handling the files properly.

I want it to be easy to run from one script, with a basic interface that lets me enter a media link and choose where to save it. If ffmpeg is needed, include clear instructions or a friendly check that tells me when it is missing and how to install it. Make the experience as simple as possible for someone who is not very technical.

If you need to look up current docs online for anything related to ffmpeg or downloading media, go ahead and do that. Please make it work cleanly on a normal desktop setup and keep the project straightforward enough that I can just run it and use it without much setup.