System and method for creation and management of advertising inventory using metadata

A media streaming system for streaming an audio/video work, the system comprising:

• a media server configured to stream data of an audio/video work;
• a video player configured to receive the streamed data of the audio/video work from the media server and to display the audio/video work on a display;
• and
• an ad inventory engine having advertisement data, wherein the media server is configured to send metadata associated with the audio/video work to the ad inventory engine, wherein the metadata has a hierarchical taxonomy that defines a plurality of attributes associated with one or more objects being presented in the audio/video work, wherein one of the plurality of attributes comprises spatial and temporal information of the one or more objects, wherein the ad inventory engine is configured to:
• receive capability information from the video player;
• determine available ad inventory based on the received metadata and to match the available inventory with the advertisement data based on the hierarchical taxonomy comprising spatial and temporal information and the capability information of the video player;
• and
• provide matched advertisement inventory to the video player for display on the display, wherein the video player is configured to position an ad from the provided-matched advertisement inventory based on the spatial information of the one or more objects, and wherein the spatial information divides the display into four quadrants and a plurality of spatial positions within each quadrant.