Enabling delivery and synchronization of auxiliary content associated with multimedia data using essence-and-version identifier

摘要: Essence of a media program can be encoded such that it carries essence identification information and set time points. Auxiliary content as companion other auxiliary data associated with the by way The points and/or fingerprints used to retrieve/recover delivered one or more device, device/application, etc., in any variety different methods. Through fingerprints, user preferences, retrieved presented interacted user. In some embodiments, described herein customized for specific sender recipient.