Channel switching processing method, system, and related devices

Abstract

A channel switching processing method includes receiving, by a switching server, a channel switching request from a receiving end. When the switching server determines that current switching resource information does not meet a switching condition according to the channel switching request, the switching server performs an exception handling procedure and sends channel switching instruction information to the receiving end. The channel switching instruction information is configured to instruct the receiving end to perform a channel switching operation corresponding to the channel switching instruction information.

1 . A channel switching processing method, comprising:
 receiving, by a switching server, a channel switching request from a receiving end;   sending, by the switching server, channel switching instruction information to the receiving end in response to the channel switching request; and   sending tailored data from a data stream to the receiving end, wherein the channel switching instruction information comprises description information of the tailored data sent by the switching server or processing information for sending the tailored data from the data stream, to allow the receiving end to identify the tailored data and to perform an operation corresponding to the channel switching instruction information according to the channel switching instruction information.   
     
     
         2 . The method according to  claim 1 , wherein before sending the tailored data from the data stream to the receiving end, the method further comprises:
 tailoring the data stream, wherein tailoring comprises reducing, transcoding, or deleting the data stream to obtain the tailored data.   
     
     
         3 . The method according to  claim 2 , wherein the data obtained by tailoring the data stream comprises: key information or a reference frame in the data stream. 
     
     
         4 . The method according to  claim 3 , wherein
 the key information comprises at least one of: channel program dedicated information, video sequence parameter set information, video image parameter set information, audio decoding parameter information, and program specific information in a transport stream.   
     
     
         5 . The method according to  claim 1 , wherein
 the channel switching instruction information comprises at least one of: description information and processing information;   wherein the description information comprises information that facilitates identification of the sent data stream as the tailored data, or a feature of the sent tailored data; and   wherein the processing information comprises information that indicates to the receiving end to ignore lost data of the tailored data stream, cancel data error correction, update playback delay, enable adaptive playback, or join a multicast group.   
     
     
         6 . A channel switching processing method comprising:
 sending, by a receiving end, a channel switching request to a switching server;   receiving, by the receiving end, channel switching instruction information from the switching server in response to the channel switching request;   receiving tailored data from a data stream sent by the switching server;   identifying, by the receiving end, the tailored data; and   performing an operation corresponding to the channel switching instruction information according to the channel switching instruction information.   
     
     
         7 . The method according to  claim 5 , wherein the tailored data comprises at least one of:
 key information or a reference frame obtained by reducing the data stream, recoded data obtained by transcoding the data stream, and necessary data obtained by deleting the data stream.   
     
     
         8 . The method according to  claim 7 , wherein
 the key information comprises at least one of: channel program dedicated information, video sequence parameter set information, video image parameter set information, audio decoding parameter information, and program specific information in a transport stream.   
     
     
         9 . The method according to  claim 6 , wherein
 the channel switching instruction information comprises at least one of: description information and processing information;   wherein the description information comprises information that facilitates identification of the sent data stream as the tailored data, and/or a feature of the sent tailored data; and   wherein the processing information comprises information that indicates to the receiving end to ignore lost data of the tailored data stream, cancel data error correction, update playback delay, enable adaptive playback, or join a multicast group.   
     
     
         10 . The method according to  claim 9 , wherein performing the operation corresponding to the channel switching instruction information comprises at least one of:
 ignoring the lost data of the tailored data stream, cancelling the data error correction, updating the playback delay, enabling the adaptive play, and joining the multicast group according to the channel switching instruction information.   
     
     
         11 . A channel switching processing method comprising:
 sending, by a receiving end, a channel switching request to a switching server;   receiving, by the receiving end, channel switching instruction information from the switching server when the switching server determines that current switching resource information does not meet a switching condition according to the channel switching request; and   performing a channel switching operation corresponding to the channel switching instruction information according to the channel switching instruction information.   
     
     
         12 . A receiving end comprising:
 a request sending unit configured to send a channel switching request to a switching server;   an instruction receiving unit configured to receive channel switching instruction information from the switching server when the switching server determines that current switching resource information does not meet a switching condition according to the channel switching request; and   a processing unit configured to perform a channel switching operation corresponding to the channel switching instruction information according to the channel switching instruction information.