Different from traditional text-based search engines, Leso provides video search engines with visual feature analysis as the core, which can better meet user needs and provide users with a richer and more accurate video search experience. Accurate to the frame of the video index, through text, pictures, video and other different means to search the video users need to provide deduplication services, support all common video formats, provide online video, mobile video, P2P video search and other different types of video search services...