You have to view source and search for .mp4 and find the link, it may be urlencoded (just joking) but this is the case for "certain" sites that try to have you

You have to view source and search for .mp4 and find the link, it may be urlencoded (just joking) but this is the case for "certain" sites that try to have you login to download their videos and try to obscure the source.