公开(公告)号：US20170150141A1

公开(公告)日：2017-05-25

申请号：US15426711

申请日：2017-02-07

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Chen-Yui Yang ,  Chee Ching ,  Paul Kahn ,  David H. Lu ,  Anthony Mark Srdar

IPC: H04N17/00 ,  H04N21/242 ,  H04N21/43

CPC classification number: H04N17/004 ,  H04N21/242 ,  H04N21/4307

Abstract: A method of managing lip synchronization error in a multimedia content delivery network includes identifying a video packet and an audio packet associated with the video packet and determining a synchronization offset between the audio and video packets at a first monitoring point in the network. The audio and video packets are then detected at a second monitoring point in the network and a second synchronization offset is determined. When a delta between the first synchronization offset and the second synchronization offset exceeds a threshold, lip synchronization error information may be automatically recorded and/or reported to a service provider and corrective action may be taken if potential sources of the lip synchronization error are within the domain of the service provider. The video packet may be identified by a timestamp within the packet and the audio packet may be identified by audio data within the audio packet.

公开(公告)号：US10045016B2

公开(公告)日：2018-08-07

申请号：US15426711

申请日：2017-02-07

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Chen-Yui Yang ,  Chee Ching ,  Paul Kahn ,  David H. Lu ,  Anthony Mark Srdar

IPC: H04W4/00 ,  H04N17/00 ,  H04N21/43 ,  H04N21/242

Abstract: A method of managing lip synchronization error in a multimedia content delivery network includes identifying a video packet and an audio packet associated with the video packet and determining a synchronization offset between the audio and video packets at a first monitoring point in the network. The audio and video packets are then detected at a second monitoring point in the network and a second synchronization offset is determined. When a delta between the first synchronization offset and the second synchronization offset exceeds a threshold, lip synchronization error information may be automatically recorded and/or reported to a service provider and corrective action may be taken if potential sources of the lip synchronization error are within the domain of the service provider. The video packet may be identified by a timestamp within the packet and the audio packet may be identified by audio data within the audio packet.