In general, the maker of a video owns the copyright to it. When a video-recording is posted onto a website, a copy is made. This involves the reproduction right of the copyright owner. Further, the communication right is involved as the video is made available on the Internet. Thus, if you want to post the video-recording onto websites like YouTube and you are not the maker of the video, you should get the consent of the copyright owner.Apart from copyright concerns, you may also want to consider Internet safety and personal privacy issues before posting the video-recording for the world at large to view.