Wikipedia
Videntifier
Videntifier, is an Icelandic software company which has developed a method to quickly identify videos and images in an automatic manner. Videntifier's patented technology can store the fingerprints of enormous amounts of video content and images, and can identify any of the reference material within seconds. Usually a single frame is enough to identify the entire video.
Currently the company is headquartered in Reykjavik (Iceland) and has offices in the San Francisco Bay Area, USA, and Shanghai, China.