WO2019019371A1 - 一种流媒体数据的传输方法、存储介质和流媒体服务器 - Google Patents
一种流媒体数据的传输方法、存储介质和流媒体服务器 Download PDFInfo
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- WO2019019371A1 WO2019019371A1 PCT/CN2017/104536 CN2017104536W WO2019019371A1 WO 2019019371 A1 WO2019019371 A1 WO 2019019371A1 CN 2017104536 W CN2017104536 W CN 2017104536W WO 2019019371 A1 WO2019019371 A1 WO 2019019371A1
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- streaming media
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- connection request
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- server
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
Definitions
- the present application relates to the field of data transmission technologies, and in particular, to a method for transmitting streaming media data, a storage medium, and a streaming media server.
- the current practice on the web side is to use the RTMP protocol or the HLS protocol as the audio and video transmission protocol and the streaming server to complete the data transmission, using the browser's audio/video tag of the mobile terminal. Video playback.
- the RTMP protocol is not applicable to most mobile terminal browsers; the HLS protocol is prone to delays due to the slicing file mechanism, and is not suitable for scenarios with high latency requirements such as interaction and live broadcast.
- the embodiment of the present application provides a method for transmitting streaming media data, a storage medium, and a streaming media server, which can continuously complete the transmission of streaming media data, reduce the delay of data transmission, and provide low latency for the browser of the mobile terminal.
- Awkward streaming data support services are provided.
- a method for transmitting streaming media data including:
- the streaming media server receives a target connection request from a browser of the mobile terminal, where the target connection request includes information of the connection object; [0009] the streaming media server creates a target event processor corresponding to the target connection request, and the target event processor uses a websocket protocol to perform data transmission with a browser of the mobile terminal; [0010] the stream The media server queries whether the connection object of the other connection request exists the same as the connection object of the target connection request;
- the streaming server multiplexes the streaming media data in the buffer queue corresponding to the first connection request to the target event.
- the target event processor sends the multiplexed streaming media data to a browser of the mobile terminal;
- the first connection request refers to that the connection object in the other connection request is connected to the target
- the requested connection object has the same connection request;
- the streaming server creates a new buffer queue corresponding to the target connection request, according to the target connection request.
- the information of the connection object extracts corresponding streaming media data, and distributes the extracted streaming media data to the target event processor through the new buffer queue, so that the target event processor will extract the extracted streaming media.
- the data is sent to the browser of the mobile terminal.
- a computer readable storage medium storing computer readable instructions, the computer readable instructions being executed by a processor to implement the transmission of the streaming media data The steps of the method.
- a streaming media server comprising a memory, a processor, and computer readable instructions stored in the memory and executable on the processor, the processor executing the computer
- the readable instructions implement the following steps:
- the streaming media server receives a target connection request from a browser of the mobile terminal, the target connection request including information of the connection object;
- the streaming media server creates a target event processor corresponding to the target connection request, and the target event processor uses a websocket protocol to perform data transmission with a browser of the mobile terminal;
- the streaming media server queries whether the connection object of the other connection request is the same as the connection object of the target connection request;
- the streaming media server multiplexes the streaming media data in the buffer queue corresponding to the first connection request to the destination a target event processor, so that the target event processor sends the multiplexed streaming media data to a browser of the mobile terminal;
- the first connection request refers to a connection object in the other connection request and the The connection request of the target connection request is the same connection request;
- the streaming server creates a new buffer queue corresponding to the target connection request, according to the target connection request.
- the information of the connection object extracts corresponding streaming media data, and distributes the extracted streaming media data to the target event processor through the new buffer queue, so that the target event processor will extract the extracted streaming media.
- the data is sent to the browser of the mobile terminal.
- a streaming media server including:
- a connection request receiving module configured to receive a target connection request from a browser of the mobile terminal, where the target connection request includes information of the connection object;
- an event processor creating module configured to create a target event handler corresponding to the target connection request, where the target event processor uses a websocket protocol to perform data transmission with a browser of the mobile terminal;
- a query module configured to query whether a connection object that has other connection requests already exists is the same as the connection object of the target connection request
- a data multiplexing module configured to: if the query result of the query module is yes, the streaming media server multiplexes the streaming media data in the buffer queue corresponding to the first connection request to the target event a processor, so that the target event processor sends the multiplexed streaming media data to a browser of the mobile terminal; the first connection request refers to that the connection object in the other connection request is connected to the target The requested connection object has the same connection request;
- a streaming media data extraction module configured to: if the query result of the query module is no, the streaming media server creates a new buffer queue corresponding to the target connection request, and connects according to the target The information of the requested connection object extracts corresponding streaming media data, and distributes the extracted streaming media data to the target event processor through the new buffer queue, so that the target event processor will extract the extracted stream.
- the media data is sent to the browser of the mobile terminal.
- the foregoing streaming media server may check whether the connection object of the target connection request has been connected by another connection request, and if yes, may multiplex other connections.
- Requesting streaming media data quickly completing the acquisition of streaming media data, if not, establishing a new buffering queue, extracting streaming media data to a new buffering queue for subsequent multiplexing of other connection requests; obtaining streaming media data
- the streaming media server sends the mobile terminal to the mobile terminal through the websocket protocol, supports the mobile terminal browser based on the websocket protocol, can continuously complete the transmission of the streaming media data, reduces the delay of data transmission, and adds the data multiplexing method to the streaming media.
- the data is quickly acquired, and the streaming server can provide low-latency streaming media data support services for the mobile terminal.
- FIG. 1 is a flowchart of an embodiment of a method for transmitting streaming media data according to an embodiment of the present application
- FIG. 2 is a schematic flowchart of determining a streaming media server in an application scenario according to a method for transmitting streaming media data in an embodiment of the present application;
- FIG. 3 is a schematic diagram of a principle of a streaming media server according to an embodiment of the present application.
- FIG. 4 is a structural diagram of an embodiment of a streaming media server according to an embodiment of the present application.
- FIG. 5 is a schematic diagram of a streaming media server according to an embodiment of the present application.
- the embodiment of the present application provides a method for transmitting streaming media data, a storage medium, and a streaming media server, which are used to solve the problem that the existing streaming media server is difficult to provide low-latency streaming media data support for the browser of the mobile terminal. problem.
- An embodiment of a method for transmitting streaming media data in an embodiment of the present application includes:
- the streaming media server receives a target connection request from a browser of the mobile terminal, where the target connection request includes information of the connection object.
- the user when the user of the mobile terminal wants to watch the live audio or video live broadcast, the user may initiate a connection request to the streaming server through the browser on the mobile terminal, which is called the connection request in this embodiment.
- Request for the target connection may include information of the connection object, where the connection object refers to an address or a unique identifier of the object that the target connection request needs to request to connect and obtain the streaming media data, and the streaming media server may The connection object finds the corresponding audio and video data from the server local or network.
- the target connection request in this embodiment is initiated by the browser of the mobile terminal.
- the page of the browser is generated by using the HTML5 standard.
- the streaming media server in this embodiment may be deployed in a CDN (Content Distribution Network) network.
- CDN Content Distribution Network
- the distribution of different connection requests to different servers by the CDN network improves the quality of service of each server while mitigating and optimizing the overall service pressure of each server. Therefore, as shown in FIG. 2, before the streaming server receives the target connection request from the browser of the mobile terminal, the method may further include:
- the scheduling center of the CDN network determines, according to the network connection between the mobile terminal and each node server on the CDN network, one of the node servers as the streaming media server.
- a plurality of node servers may be deployed on a CDN network, and these node servers are also referred to as edge nodes (ie, service nodes in the CDN network that are closest to the client access), and are scheduled by the CD N network.
- the center conducts unified scheduling management.
- CDN network can be based on the network connection between the mobile terminal and each node server, such as which node server and mobile terminal are closer on the network line, and / or which node server current service pressure is small And so on, thereby determining one of the node servers from each of the node servers as a streaming server that provides services to the mobile terminal.
- the streaming media server may establish a data transmission link based on a websocket protocol with the mobile terminal.
- the streaming media server may complete establishment of a data transmission link with the mobile terminal by using a websoc ket service program preset on the streaming media server.
- the websocket service program is pre-deployed on the CDN network, and is automatically synchronized to the respective node servers in the form of a binary file through an internal service update channel of the CDN network. It can be understood that the web socket service program is executed in the form of a binary file, which can greatly reduce the cost and cost of deploying the extension of the websocket service program on each node server of the CDN network, and improve the deployment and update efficiency of the service program.
- the streaming media server creates a target event processor corresponding to the target connection request, where the target event processor uses a websocket protocol to perform data transmission with a browser of the mobile terminal.
- the streaming media server data transmission is performed separately from each of the different connection requests by respective event processors.
- the streaming server can pre-create each Handler, that is, each event processor, by using the websocket package in the officially maintained standard package g o.net of the go language.
- These event handlers can primarily target HTTP requests.
- the streaming server can bind the ws address set by a specific rule (for example, ws://.. Jws/stream_name, the address represents a stream, and stream_name represents an arbitrary stream name), respectively, to bind these Handlers, a ws address is tied Make a Handler.
- the target connection request may trigger an idle handler on the streaming server, and the triggered handler then associates with the target connection request, and the handler acts as
- the target event processor uses the websocket protocol to perform data transmission with the browser of the mobile terminal.
- the streaming media server queries whether the connection object of the other connection request is the same as the connection object of the target connection request, and if so, step 104 is performed, and if not, step 105 is performed; [0050] Based on the consideration of fast acquisition of streaming media data, if the connection object of a connection request already exists on the streaming media server is the same as the connection object of the target connection request, it indicates that the streaming media data that needs to be acquired by the target connection request has been It is acquired in advance by another connection request, and the streaming data acquired by another connection request is currently being cached on the streaming server.
- the streaming media server does not need to re-acquire the same streaming media data for the target connection request, and directly reuses the streaming media data obtained by the other connection request, and provides the browser to the mobile terminal.
- the connection object of the connection request is found to be the same as the connection object of the target connection request, the process may be performed.
- the streaming media server may pre-establish a streaming media connection pool, where the streaming media connection pool is used to store and manage the current flow management object of each connection request, and the flow management object record There is information about the connection object of the connection request corresponding thereto.
- the foregoing step 103 may be specifically: the streaming media server queries whether the connection object of the other connection management object in the streaming media connection pool has the same connection object as the target connection request.
- the streaming media server may further register the flow management object corresponding to the target connection request into the office.
- the streaming media connection pool may be further registered.
- the streaming media connection pool on the streaming media server can be created by using the go language map object, and stores the currently connected StreamManager information, that is, the flow management object.
- the streaming connection pool can allocate an in-pool connection object Conn to the StreamManager, and the in-pool connection object Conn is used to identify the target connection request corresponding to the StreamManager.
- the StreamManager can also record information about the connection object of the corresponding connection request, where the connection object can be distinguished according to stream_name.
- the streaming server finds that the stream_names of the two StreamManager records in the current streaming media connection pool are the same, it can be considered that the connection requests corresponding to the two StreamManagers have the same connection object, that is, between the two connection requests.
- Streaming media data can be reused.
- the previous connection request since the previous connection request usually has a corresponding buffer queue, the latter connection request can directly share an existing buffer queue with the previous connection request.
- the streaming media server multiplexes the streaming media data in the buffer queue corresponding to the first connection request to the target event processor, so that the target event processor will reuse the obtained streaming media data.
- a browser sent to the mobile terminal the first connection request refers to a connection request in which the connection object of the other connection request is the same as the connection object of the target connection request;
- the streaming data in the buffer queue corresponding to the first connection request is handed over to the target event processor, so that the target event processor will use the streaming media.
- the data is sent to the browser of the mobile terminal, and the streaming media data is quickly obtained. Because the data multiplexing method is adopted, the streaming media server can more effectively provide the streaming media data support service for the browser of the mobile terminal.
- the streaming media server creates a new buffer queue corresponding to the target connection request.
- connection object of the other connection request is not the same as the connection object of the target connection request
- the streaming server needs to provide a new buffer queue for the target connection request, so as to The target connection request acquires streaming media data.
- the streaming media server may pre-establish a buffer, and the buffer is used to store a buffer queue corresponding to each connection request. And, in order to improve the utilization of the buffer and ensure that the streaming media server provides the quality and efficiency of the streaming media data service, the streaming media server may adjust the size of the buffer according to the current streaming media data acquisition speed; wherein, the current The faster the streaming data is acquired, the smaller the adjusted buffer is. The slower the current streaming data acquisition speed is, the larger the adjusted buffer is.
- the streaming server since the case where the buffer queue multiplexing between each connection request, the streaming server so create a new buffer queue inch, can only create the corresponding connection pool registered in streaming StreamManag e r Buffer queue. It can be understood that if the target connection request can multiplex the buffer queue of other connection requests, the StreamManager corresponding to the target connection request does not need to register the inbound media connection pool; conversely, if the target connection request has no other connection request that can be reused The buffer queue is configured, and the StreamManager corresponding to the target connection request is registered in the streaming media connection pool. Therefore, the streaming server is The StreamManager registered in the streaming media connection pool creates a corresponding buffer queue. That is, the streaming server creates a corresponding buffer queue for the connection request that cannot obtain the streaming media data by using the data multiplexing mode.
- the streaming media server extracts corresponding streaming media data according to the information of the connection object of the target connection request.
- the information of the connection object of the target connection request may be a storage address or a unique identifier of a certain audio and video data
- the streaming media server may find the corresponding information from the server local or the network according to the information of the connection object. Audio and video data.
- the streaming media server may obtain a corresponding buffer queue through the StreamManager, and then establish an RTMP with the node server where the connection object is located through the buffer queue. Connected so that it can be streamed from the node server to the buffer queue.
- the streaming media data obtained by the streaming may be buffered in a corresponding buffer queue on the streaming server in the format of the RTMP packet.
- the streaming server may pre-establish an RTMP connection pool, the RTMP connection.
- the pool is used to manage these RTM connections.
- RTMP and websocket stream services can be combined in program design, or shared memory can be provided for cross-process access, so that buffered data of RTMP connection can be obtained from the existing RTMP connection pool on the node server, to the maximum extent.
- the multiplexed streaming media data on the streaming media server is not specifically limited in this embodiment.
- the streaming media server distributes the extracted streaming media data to the target event processor through the new buffer queue, so that the target event processor sends the extracted streaming media data to The browser of the mobile terminal.
- the target event processor uses the websocket protocol to perform data transmission with the browser of the mobile terminal, and after the streaming media server extracts the streaming media data, the target event processor may extract the extracted streams.
- the media data is sent to the browser of the mobile terminal.
- the streaming media server may further be configured with a statistical data collection process Data collector and a streaming media monitoring process monitor.
- the streaming server can build Monitor through Go prediction and pass RPC. (remote procedure call)
- the mechanism registers the remote procedure call and passes the connection statistics (RTMP connection number, each buffer queue size, network connection status, client request IP, number of exceptions, CPU usage, etc.) as a parameter to the Monitor.
- the Monitor is responsible for collecting parameter information and judging whether it is necessary to initiate an alarm signal to the dispatch center of the CDN network according to the parameter information; in addition, it can also be determined through the CDN internal signaling channel (for example: HTTP or TCP connection), according to the CDN.
- the internal data transfer protocol submits the WebSocket flow connection status of the streaming media server to the dispatch center.
- the monitor may report to the dispatching center according to the severity of the fault.
- the monitor can also collect relevant system information and attempt to restart the websocket service to ensure high availability of the websocket service.
- the scheduling center of the CDN network can adjust the current service pressure of each node server according to the feedback information of the Monitor, thereby improving the service quality of each node server in the CDN network as much as possible, especially Alleviate the service pressure of each node server in a special segment (such as a busy network).
- the streaming media server receives a target connection request from a browser of the mobile terminal, where the target connection request includes information of the connection object; and then, the streaming media server creates a connection with the target Requesting a corresponding target event processor, wherein the target event processor uses a websocke t protocol to perform data transmission with a browser of the mobile terminal; and then, the streaming media server queries whether a connection object and other connection request have existed The connection object of the target connection request is the same; if yes, the streaming server multiplexes the streaming media data in the buffer queue corresponding to the first connection request to the target event processor, so that the target event processor will Transmitting the obtained streaming media data to the browser of the mobile terminal; the first connection request refers to a connection request in which the connection object of the other connection request is the same as the connection object of the target connection request; if not, Then the streaming server creates a new one corresponding to the target connection request a buffer queue, extracting corresponding streaming media data according to the information of
- the streaming server can check whether the connection object of the target connection request has been If there is another connection request, if it is, the streaming media data of other connection requests can be multiplexed, and the streaming media data can be quickly obtained. If not, a new buffer queue is created, and the streaming media data is extracted to the new buffer queue.
- the streaming media server sends the browser to the mobile terminal through the websocket protocol, and the mobile terminal browser is highly supported based on the websocket protocol, and the streaming media data can be continuously completed. The transmission, the delay of data transmission is reduced, and the data multiplexing method is used to quickly obtain the streaming media data, and the streaming media server can provide low-latency streaming media data support services for the browser of the mobile terminal.
- FIG. 4 is a structural diagram of an embodiment of a streaming media server in an embodiment of the present application.
- a streaming media server includes:
- a connection request receiving module 401 configured to receive a target connection request from a browser of the mobile terminal, where the target connection request includes information of the connection object;
- an event handler creating module 402 configured to create a target event processor corresponding to the target connection request, where the target event processor uses a websocket protocol to perform data transmission with a browser of the mobile terminal;
- a query module 403 configured to query whether a connection object that has other connection requests already exists is the same as the connection object of the target connection request;
- the data multiplexing module 404 is configured to: if the query result of the query module 403 is yes, the streaming media server multiplexes the streaming media data in the buffer queue corresponding to the first connection request to the a target event processor, so that the target event processor sends the multiplexed streaming media data to a browser of the mobile terminal; the first connection request refers to a connection object in the other connection request and the The connection request of the target connection request is the same connection request;
- the streaming media data extraction module 405 is configured to: if the query result of the query module 403 is negative, the streaming media server creates a new buffer queue corresponding to the target connection request, according to the aims The information of the connection object of the connection request extracts corresponding streaming media data, and distributes the extracted streaming media data to the target event processor through the new buffer queue, so that the target event processor will extract the extracted data.
- the streaming media data is sent to a browser of the mobile terminal.
- the streaming media server may pre-establish a streaming media connection pool, where the streaming media connection pool is used to store and manage the current flow management object of each connection request, and the flow management object records a connection request corresponding thereto. Information about the connection object;
- the query module includes: a connection object query unit, configured to query, in each flow management object of the streaming media connection pool, whether a connection object of another connection request exists and a connection object of the target connection request the same;
- the streaming media server may further include: a stream management registration module, configured to register a flow management object corresponding to the target connection request into the streaming media connection pool.
- the streaming media server may pre-establish a buffer, where the buffer is used to store a buffer queue corresponding to each connection request;
- the streaming media server may further include:
- a buffer adjustment module configured to adjust a size of the buffer according to a current streaming media data acquisition speed
- the scheduling center of the CDN network determines one of the node servers as the streaming media server according to the network connection between the mobile terminal and each node server on the CDN network;
- the streaming media server may further include: a transmission link establishing module, configured to establish a data transmission link based on a websocket protocol between the streaming media server and the mobile terminal.
- the transmission link establishing module may include: a service program establishing unit, configured to complete a data transmission link with the mobile terminal by using a websocket service program preset on the streaming media server The websocket service program is pre-deployed on the CDN network and automatically synchronized to the respective node servers in the form of a binary file through an internal service update channel of the CDN network.
- the streaming server 5 includes a processor 50, a memory 51, and computer readable instructions 52 stored in the memory 51 and executable on the processor 50, such as a program that executes a method of transmitting streaming media data.
- the processor 50 executes the computer readable instructions 52 to implement the steps in the foregoing method for transmitting various streaming media data, such as steps 101 through 107 shown in FIG.
- the processor 50 executes the computer readable instructions 52 to implement the functions of the modules/units in the various apparatus embodiments described above, such as the functions of the modules 401 to 405 shown in FIG.
- the computer readable instructions 52 may be partitioned into one or more modules/units, the one or more modules/units being stored in the memory 51, and by the processor 50 executed to complete the application.
- the one or more modules/units may be a series of computer readable instruction instruction segments capable of performing a particular function, the instruction segments being used to describe the execution of the computer readable instructions 52 in the streaming media server 5.
- the streaming media server 5 may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server.
- the streaming server may include, but is not limited to, a processor 50, a memory 51. It will be understood by those skilled in the art that FIG. 5 is merely an example of the streaming media server 5, and does not constitute a limitation to the streaming media server 5, and may include more or less components than those illustrated, or may be combined with some components, or different. Components, such as the streaming server, may also include input and output devices, network access devices, buses, and the like.
- the processor 50 may be a central processing unit (CPU), or may be another general-purpose processor, a digital signal processor (DSP), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), ready-to-use programmable gate array
- CPU central processing unit
- DSP digital signal processor
- ASIC Application Specific Integrated Circuit
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the memory 51 may be an internal storage unit of the streaming media server 5, such as a hard disk or a memory of the streaming media server 5.
- the memory 51 may also be an external storage device of the streaming media server 5, such as a plug-in hard disk provided on the streaming media server 5, a smart memory card (SMC), and a secure digital (Secure Digital, SD) card, flash card, etc.
- the memory 51 may also include both an internal storage unit of the streaming media server 5 and an external device. Storage device.
- the memory 51 is configured to store the computer readable instructions and other programs and data required by the streaming server.
- the memory 51 can also be used to temporarily store data that has been output or is about to be output.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
- a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
Abstract
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