Tkinter - https://www.tutorialspoint.com/python/python_gui_programming.htm
Pytube - https://pytube.io/en/latest/index.html
Ffmpeg - https://ffmpeg.org/

Dal pouit zdroje:
https://stackoverflow.com/
https://github.com/mhaller/pyffmpeg
https://github.com/kkroening/ffmpeg-python
https://stackoverflow.com/questions/42438380/ffmpeg-in-python-script
