This is jaw-dropping - and possibly a little scary with what we can do with technology these days... Programmers at Stanford University have developed a software that enables you to upload your image/video onto any surface within any existing video.
Imagine, as an advertiser, paying the owner of the hottest YouTube video for ad space to insert your promo directly into their video - which will appear as natural as if it were always there. And you're done quickly and easily with just a few clicks.