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YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim, three former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google Search.
Mamma.com was launched in July 1996 by Herman Tumurcuoglu in Montreal, Canada. [1] It was one of the web's first tier 2 metasearch engines.. Copernic Technologies Inc. was incorporated In July, 1996, under the name Agents Technology, Inc.
The main use of these search engines is the increasing creation of audiovisual content and the need to manage it properly. The digitization of audiovisual archives and the establishment of the Internet, has led to large quantities of video files stored in big databases, whose recovery can be very difficult because of the huge volumes of data and the existence of a semantic gap.