Awesome script!!! The list of sites is huge!

taking into account the number of sites served by this script it is great and does its job without a lot of extra baggage on the pages.
Excelent job

Do note that on some websites (xhamster for example), it's not possible to download and buffer the video at the same time. So if the download doesn't want to start, close the page with the buffering video and everything should be a-ok!

May you write a guide of how you have done this script? (e.g. solving the key of XH)