Vimeo, YooTube & Co embeds are as easy as it gets. Just copy & paste the videos share URLs. For a complete list of easy embed providers check out this list.
With an Automatic Video Thumbnail Plugin you can also create Video Thumbnails and get them set as featured images on the fly.
The Big Oxmox advised her not to do so, because there were thousands of bad Commas, wild Question Marks and devious Semikoli, but the Little Blind Text didn’t listen. She packed her seven versalia, put her initial into the belt and made herself on the way.