Method for multicasting video data, unicast server and client

Abstract

A method, device and system of multi-cast video data are disclosed. The method includes: a retransmission server receives the control requiring signaling for requiring the video data from the client, in which the control requiring signaling comprises the synchronization requiring information(S202); the retransmission server generates the synchronization responding information according to the synchronization requiring information and the stored video data from multi-cast server, in which the synchronization responding information comprises the parameters for controlling the play of the video data(S204); the retransmission server sends the video data and the control responding signaling with the synchronization responding information, in which, the control responding signaling comprises the synchronization responding information so that the client plays the video data according to the parameters in the synchronization responding information(S206). With the solution, it can avoid generating the error video data in the client, and make the video in the client play synchronously to improve the experience of the user.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for multicasting video data, a unicast server and a client. Background technique [0002] The Rapid Acquisition of Multicast RTP Sessions (RAMS) Technical Solution of the Internet Engineering Task Force (IETF) for Real-time Transport Protocol (RTP) Sessions , providing a method for a media client to quickly access multicast in an RTP multicast session. figure 1 It is a structural block diagram of the system according to the RAMS scheme of the IETF of the related art. By using this method, the delay time before the media client joins the RTP multicast session can be reduced, such as Internet Protocol Television (Internet Protocol Television, referred to as IPTV) and the like When the media client needs to frequently switch the streaming media multicast service of the multicast group, the media client using the RAMS solution can quickly switch channels, reduce the waitin...

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed to solve the problem that different clients access the same multicast group at different times and the video images played at the same time are not synchronized. Therefore, the main purpose of the present invention is to provide a solution for multicast video data , to address at least one of the above

Images