The compound adjective 'video-based' is a modern formation from the 20th century, directly combining two English lexical items. The first element, 'video', originates from the Latin verb 'vidēre', meaning 'to see', which entered English via its use in broadcasting and technology to denote recorded visual content. The second element, 'based', comes from the noun 'base', itself from Old French 'bas', ultimately from Greek 'basis' (a step, pedestal). When combined with the participial '-ed', it creates an adjective meaning 'founded upon'. Thus, 'video-based' logically describes any system, activity, or content that is fundamentally established upon or utilizes video technology as its core component.

Structure: video (visual recording) + based (having as a foundation) - video: From Latin 'vidēre' (to see). In English, it functions as a noun meaning a recording of moving visual images, used here attributively. - based: From the English verb 'base' (to establish on a foundation) + the suffix '-ed', forming a participial adjective meaning 'having as a base or foundation'.