Greasy Fork is available in English.
Download YouTube videos. Video formats are listed at the top of the watch page. Video links are tagged so that they can be downloaded easily.
Thanks for your feedback. This will be fixed in the next version (>1.96).
This is fixed in v2. :)
BUG: Double video definition in video thumbnails on video playlist pages and full playlist pages
Video playlist:
https://www.youtube.com/watch?v=Zi_XLOBDo_Y&list=PL77013A6C311772A8
&
Full playlist:
https://www.youtube.com/playlist?list=PL77013A6C311772A8