Removes ads and unwanted sections (configurable), allows downloading and resizing videos, displays all comments on video page, expands the description, can prevent autoplay and autodownload, adds a HD (High Definition) select, etc...

Direct download MP4 Video . Gives a direct link with resume support to mpeg4 video on YouTube video page. this script use youtubemp4.com for finding mp4 .

Download the full movie trailers from apple.com with this userscript.