CONTENT SYNCHRONIZATION USING WATERMARK TIMECODES

摘要

Methods, devices and computer program products allow improved synchronization among multiple contents. One disclosed method includes receiving a first and a second content and performing watermark extraction to recover a first timecode as part of a watermark embedded into a segment of that content. The first timecode conforms to a first type of timing system. Next, a timing system associated with the second content is determined, and a mapping is obtained that allows timecode conversion between the first and the second timing systems. Using the mapping to synchronize the presentation of the second content with that of the first content. Thus synchronization of multiple contents is properly maintained even when processing operations such as format conversion and transcoding cause metadata streams that carry timing information to be removed.

主权项

1. A method for synchronizing multiple contents, comprising:
receiving a plurality of contents including a first and a second content; performing watermark extraction operations on the first content to recover a first timecode that is incorporated as part of a watermark payload into a first segment of the first content, the first timecode conforming to a first type of timing system; determining a timing system associated with the second content; upon a determination that the timing system associated with the second content is a second timing system that is different from the first timing system, obtaining a mapping that allows one or both of: a conversion of timecodes from the first timing system to the second timing system or a conversion of timecodes from the second timing system to the first timing system; and synchronizing presentation of the second content with the first content using the mapping.