A system (e.g., content management system, content delivery system) and method are described herein which are configured for receiving one or more source descriptor files (e.g., MPD files, HLS m3u8 files, HTTP manifest files) along with associated adaptive bit rate segments. The system and method are also configured for receiving rules (e.g., content ratings, timing information, user profiles, regional and demographic information) and then creating multiple descriptor files based on the received rules and the source descriptor file(s). The system and method are further configured for distributing the multiple descriptor files to one or more downstream systems (e.g., content to delivery systems, users).