IcySnex/SerienStreamAPI — reverse-engineered prompt

Build me a simple C# library for personal educational use that can search SerienStream s.to and AniWorld by show name, then return the show details, seasons, episodes, movies, titles, descriptions, and available video options.

I want it to hide the messy scraping part behind easy client methods, so I can ask for a series, get episode info, see the available hosters and audio or subtitle languages, and then choose a stream. It should support common hosters like VOE, StreamTape, Doodstream, and Vidoza when extracting the real video link. If FFmpeg is available, add a download helper that can save the selected stream to an mp4 file and report progress.

Please include a small example or tests that show searching, listing episodes, getting stream details, and downloading one selected episode. Keep the code clean and reusable, with simple models and async methods. Look up current site behavior or docs online if you need to.