Abstract: A method for processing a channel switching failure case is disclosed. The method for processing a channel switching failure case is used to provide media services for receiver in unicast and multicast modes and includes: detecting whether a data stream is of failure case after sending a channel switching request; and sending a failure case message and/or a failure case processing message to a channel switching server when a failure case occurs so that the channel switching server may process the failure case. A terminal device and channel switching server are provided so that the channel switching server may recover channel switching services provided for receiver and provide correct services for a user.

Abstract: Embodiments of the present invention provide a streaming media segment preparation method and apparatus. The method includes: determining at least one quality point, where the at least one quality point is separately used to indicate quality of at least one target segment of streaming media in a first time period; and determining, according to the at least one quality point, the at least one target segment of the streaming media in the first time period. In the embodiments of the present invention, streaming media segments are prepared by taking a quality factor of the streaming media segments into consideration, which may avoid the problem that redundant segments are generated during preparation of the streaming media segments according to bit rates, thereby reducing a storage volume of a server.

Abstract: Different representations are associated with an instance of media content, and a representation can include multiple portions of media content. A respective quality value and bitrate can be associated with each of the portions. Information about the instance of content, including bitrate and quality information, can be accessed by and/or sent to a client. The quality information indicates the availability of measures of quality (e.g., quality values) and where those quality values reside or how they can be retrieved. The client can use quality as well as bitrate to make more intelligent decisions while streaming the content. For example, while the content is being downloaded over a network, the client can adapt to changes in available network bandwidth by selecting one portion of the instance of media content over another based not just on its bitrate but also based on its quality value.

Abstract: Disclosure of the present invention provide a method and an apparatus for processing a video stream. The method includes: acquiring a request message from a terminal, where the request message carries address information of multiple sub video screens, according to the address information, acquiring multiple substreams corresponding to the multiple sub video screens in a one-to-one manner, merging the multiple substreams into a single stream, and generating an indication message used to indicate a picture parameter of the single stream, and sending the single stream and the indication message to the terminal, so that the terminal decodes the single stream and displays decoded multiple sub video screens according to the indication message.

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.

Abstract: A method for adaptive streaming of a media content, wherein the method comprises receiving a media presentation description that provides presentation information for the media content, determining a plurality of representations from the media presentation description that comprise segments that are provided with bitrate and quality information, selecting a media segment that meets a desired quality level to download from one of the representations, updating a buffered media time for downloading the media segment, and determining when to switch to another representation by comparing the buffered media time to a switching threshold value.

Abstract: A channel switching processing method, system, and related devices are provided. The method includes: receiving, by a switching server, a channel switching request sent by a receiving end; and when the switching server determines that current switching resource information does not meet a switching condition according to the channel switching request, performing, by the switching server, an exception handling procedure, and sending channel switching instruction information to the receiving end, in which 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. A channel switching processing system and related devices are also provided. Therefore, the channel switching efficiency may be effectively improved.

Abstract: A method for implementing stream services is provided according to the embodiments of the present invention. The method includes: determining, by a server, a response message, in which the response message includes: at least one of an interval between a first data stream and a second data stream, latest data information of the second data stream, and rate change point information of the first data stream; and sending, by the server, the first data stream and the response message to a receiving end, so that the receiving end performs corresponding operation according to the response message. A communication system and a relevant device are further provided according to the embodiments of the present invention. The embodiments of the present invention can effectively improve data sending flexibility.

Abstract: A channel switching processing method, system, and related devices are provided. The method includes: receiving, by a switching server, a channel switching request sent by a receiving end; and when the switching server determines that current switching resource information does not meet a switching condition according to the channel switching request, performing, by the switching server, an exception handling procedure, and sending channel switching instruction information to the receiving end, in which 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. A channel switching processing system and related devices are also provided. Therefore, the channel switching efficiency may be effectively improved.

Abstract: Embodiments of the present invention disclose a method, a device, and a system for self-adaptively adjusting a data transmission rate, which solve the problem of network buffer overflow. The method includes: receiving parameters sent by a client; calculating a predicted value of a data sending rate according to a maximum value of a network buffer and the received parameters; judging whether the predicted value of the data sending rate is less than an original service bit rate; and if the predicted value of the data sending rate is less than the original service bit rate, discarding data of at least one data unit in a send buffer. The method, the device, and the system are mainly applied to adjust the data transmission rate, and especially to adjust the data transmission rate in a time-varying network.

Abstract: A method for processing a channel switching failure case is disclosed. The method for processing a channel switching failure case is used to provide media services for receiver in unicast and multicast modes and includes: detecting whether a data stream is of failure case after sending a channel switching request; and sending a failure case message and/or a failure case processing message to a channel switching server when a failure case occurs so that the channel switching server may process the failure case. A terminal device and channel switching server are provided so that the channel switching server may recover channel switching services provided for receiver and provide correct services for a user.