I've been reading up on SEO and heard that paths should include full URLs: http://www.etc
Does this apply for image sources and video content as well?
Or does it make a difference if say a video on my page is loaded via "/images/ex.mov"
Does this affect load time at all either way?
Seo doesnt matter if you use full or relative, as long as they point to the correct destination
The only way it affects load times would be that the user has to download the bytes that the absolute url provides as extra characters.