I've used moviepy (https://github.com/Zulko/moviepy https://github.com/Zulko/moviepy) with some success. Doesn't do Final Cut export but it uses ffmpeg under th

I've used moviepy (https://github.com/Zulko/moviepy https://github.com/Zulko/moviepy) with some success. Doesn't do Final Cut export but it uses ffmpeg under the hood, so it could be used to create raw clips in some lossless format.