Correlating Timeline Information Between Media Streams

摘要

A system is provided for enabling correlating timeline information between a first media stream and a second media stream, with the first media stream and the second media stream being both associated with a common play-out timeline. The system comprises at least two content monitors, each arranged for providing a persistent identification of one or more media samples of a media stream. The system further comprises a correlation subsystem arranged for receiving a first persistent identification related in time with a second persistent identification, receiving a first timestamp value of the first media stream related in time with a second timestamp value of the second media stream, matching the first persistent identification to a first play-out time on the common play-out timeline and the second persistent identification to a second play-out time, and generating correlation information based on a comparison of the first play-out time with the second play-out time for enabling correlating the first timestamp value with the second timestamp value and thereby correlating the first timeline information with the second timeline information.

主权项

1. A system for enabling correlating timeline information between a first media stream and a second media stream, the first media stream and the second media stream being both associated with a common play-out timeline and comprising different timeline information, and the system comprising:
at least two content monitors, each arranged for providing a persistent identification of one or more media samples of a media stream, the persistent identification being data which is robust against processing of the media stream and can be reproducibly obtained using the media stream, wherein the at least two content monitors comprise a first content monitor for providing a first persistent identification of the first media stream and a second content monitor for providing a second persistent identification of the second media stream; and a correlation subsystem arranged for: i) receiving the first persistent identification and the second persistent identification, where the first persistent identification and the second persistent identification are related in time,ii) receiving a first timestamp value from timeline information of the first media stream and a second timestamp value from timeline information of the second media stream where the first timestamp value and the second timestamp value are related in time, iii) matching the first persistent identification to a first play-out time on the common play-out timeline and the second persistent identification to a second play-out time on the common play-out timeline, andiv) generating correlation information based on a comparison of the first play-out time with the second play-out time for enabling correlating the first timestamp value with the second timestamp value and thereby correlating the first timeline information with the second timeline information.