For something like Firefox, pulling them out of exported bookmarks is as simple as:- grep "https://www.youtube.com/watch?v= https://www.youtube.com/watch?v=" /

For something like Firefox, pulling them out of exported bookmarks is as simple as:- grep "https://www.youtube.com/watch?v= https://www.youtube.com/watch?v=" /tmp/bookmarks.html | cut -b22-64