A system and related method for targeted content delivery based on Internet video traffic analysis, including one or more of the following: a packet-based communication network in communication with a terminal device, the packet-based communication network 1) collecting and comparing traffic flows between the terminal device and one or more video content sources to known protocol signatures, 2) identifying match(es), 3) identifying, monitoring and analyzing a flow sequence of video content information for the match(es), 4) identifying and extracting associated metadata, and 5) harmonizing the metadata; a behavior analyzer that formulates a behavioral profile of a user of the terminal device who requests and receives the video content information; and a targeted content delivery infrastructure that establishes behavioral profile data regarding the user and delivers targeted content to the user.