WO2019019370A1 - 一种音视频的直播处理方法、存储介质和一种移动终端 - Google Patents
一种音视频的直播处理方法、存储介质和一种移动终端 Download PDFInfo
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- WO2019019370A1 WO2019019370A1 PCT/CN2017/104528 CN2017104528W WO2019019370A1 WO 2019019370 A1 WO2019019370 A1 WO 2019019370A1 CN 2017104528 W CN2017104528 W CN 2017104528W WO 2019019370 A1 WO2019019370 A1 WO 2019019370A1
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- streaming media
- data
- mobile terminal
- connection request
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- 230000005540 biological transmission Effects 0.000 claims abstract description 89
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Classifications
-
- 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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
-
- 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]
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
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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
Definitions
- the present application relates to the field of data transmission technologies, and in particular, to a live broadcast processing method for audio and video, a storage medium, and a mobile terminal.
- 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 live broadcast processing method for audio and video, a storage medium, and a mobile terminal, which can reduce the delay of data transmission and improve the real performance of audio and video live broadcast.
- a live broadcast processing method for audio and video including:
- the mobile terminal acquires a play address of the websocket protocol from the service background according to the input live command, where the play address is maintained by the service background and points to a streaming media server;
- the mobile terminal establishes a WE based on the obtained play address and the streaming media server.
- the mobile terminal sends a target connection request to the streaming media server, where the target connection request includes information of a connection object;
- the mobile terminal acquires a first data packet from the streaming media server by using the data transmission link; the first data packet is that the streaming media server extracts a corresponding flow according to the information of the connection object.
- Media data and using the websocket protocol to perform data encapsulation on the extracted streaming media data;
- the mobile terminal decapsulates the first data packet to obtain streaming media data corresponding to the connection object;
- the streaming media data includes audio data and/or video data;
- the mobile terminal performs decoding and playing on the streaming media data through an html5-based browser.
- a computer readable storage medium is stored, the computer readable storage medium storing computer readable instructions executed by a processor to implement live broadcast processing of audio and video The steps of the method.
- a mobile terminal including a memory, a processor, and computer readable instructions stored in the memory and executable on the processor, the processor executing the computer Read the command to achieve the following steps:
- the mobile terminal acquires a play address of the websocket protocol from the service background according to the input live command, where the play address is maintained by the service background and points to a streaming media server;
- the mobile terminal establishes a data transmission link based on the websocket protocol between the broadcast address and the streaming media server according to the obtained play address;
- the mobile terminal sends a target connection request to the streaming media server, where the target connection request includes information of a connection object;
- the mobile terminal acquires a first data packet from the streaming media server by using the data transmission link; the first data packet is that the streaming media server extracts a corresponding flow according to the information of the connection object.
- Media data and using the websocket protocol to perform data encapsulation on the extracted streaming media data;
- the mobile terminal decapsulates the first data packet to obtain streaming media data corresponding to the connection object;
- the streaming media data includes audio data and/or video data;
- the mobile terminal performs decoding and playing on the streaming media data through an html5-based browser.
- a live broadcast processing device for audio and video, including: [0023] a play address obtaining module, configured to obtain a play address of a websocket protocol from a service background according to the input live command, where the play address is maintained by the service background and directed to a streaming media server;
- a transmission link establishing module configured to establish a data transmission link based on a websocket protocol between the streaming address server and the streaming media server according to the obtained playing address;
- a request sending module configured to send a target connection request to the streaming media server, where the target connection request includes information of a connection object
- a data packet obtaining module configured to acquire, by using the data transmission link, a first data packet from the streaming media server, where the first data packet is extracted by the streaming media server according to information about the connection object Corresponding streaming media data, and using the websocket protocol to perform data encapsulation on the extracted streaming media data;
- a data packet decapsulation module configured to decapsulate the first data packet to obtain streaming media data corresponding to the connection object; and the streaming media data includes audio data and/or video data;
- a decoding play module configured to decode the streaming media data by using an html5-based browser, and the beneficial effects of the invention
- the mobile terminal acquires a play address of the websoc ket protocol from the service background according to the input live command, where the play address is maintained by the service background and points to a streaming media server;
- the mobile terminal establishes a data transmission link based on the websocket protocol between the broadcast address server and the streaming media server; and then the mobile terminal sends a target connection request to the streaming media server, where the target connection request is sent And including, by the mobile terminal, the first data packet from the streaming media server by using the data transmission link; the first data packet is extracted by the streaming media server according to the information of the connection object Corresponding streaming media data, and using the websocket protocol to perform data encapsulation on the extracted streaming media data; and then, the mobile terminal decapsulates the first data packet to obtain a streaming media corresponding to the connected object Data;
- the streaming media data includes audio data and/or video data;
- the mobile terminal decodes and plays the streaming media data through a browser based on htm
- the server transmits the streaming data through the data transmission link based on the websocket protocol, supports the mobile terminal mobile terminal based on the websocket protocol, and continuously completes the transmission of the streaming media data, and the browser on the mobile terminal.
- the new features of html5 can reduce the delay of data transmission and improve the reality of audio and video broadcast.
- FIG. 1 is a flowchart of an embodiment of a live broadcast processing method for audio and video in an embodiment of the present application
- FIG. 2 is a schematic flowchart of a streaming media server acquiring streaming media data in a live broadcast processing method for audio and video according to an embodiment of the present disclosure
- 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 schematic flowchart of adjusting a cache space in an application scenario in a live broadcast processing method for audio and video in the embodiment of the present application;
- FIG. 5 is a schematic diagram of data transmission between a mobile terminal, a streaming media server, and a central node in an embodiment of the present application;
- FIG. 6 is a schematic diagram of a process of decoding and playing back RTMP stream data in an application scenario according to an audio and video live processing method in an embodiment of the present application;
- FIG. 7 is a structural diagram of an embodiment of an audio and video live broadcast processing apparatus according to an embodiment of the present application.
- FIG. 8 is a schematic diagram of a mobile terminal according to an embodiment of the present disclosure.
- the embodiment of the present application provides a live broadcast processing method for audio and video, a storage medium, and a mobile terminal, which are used to solve the problem that the existing mobile terminal browser has a high delay in audio and video broadcast.
- An embodiment of a live broadcast processing method for audio and video in an embodiment of the present application includes:
- the mobile terminal obtains a play address of the websocket protocol from the service background according to the input live command, where the play address is maintained by the service background and points to a streaming media server.
- the browser on the mobile terminal adopts the html5 standard, so that the browser on the mobile terminal can be supported for multimedia playback and other functions.
- the mobile terminal (client) performs data transmission with the streaming media server, and the streaming media server provides the response support of the streaming media data by using the websocket protocol, so that the mobile terminal can continuously obtain the corresponding streaming media data and perform live broadcast of audio and video. Reduce the delay of data transmission and improve the reality of audio and video broadcast.
- the user may click on a live broadcast trigger event of an audio or video, such as a link address of a live video, on the page displayed by the browser of the mobile terminal, thereby generating a corresponding
- the live broadcast link request (that is, the live broadcast command input above)
- the mobile terminal may apply for the play address of the corresponding websocket protocol to the service background according to the live broadcast link request.
- the service background can be deployed on a local server or a remote server.
- the service background pre-maintains the play address of multiple websocket protocols that may be used.
- the address format of these play addresses is "ws : ⁇ +ip Address ", if it is the secure mode of the Websocket protocol, the address format can be "wss: //+ip address”.
- the ip address in the play address points to a streaming server, and the address of the streaming server is the ip address.
- 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.
- the streaming media server pointed to by the play address is determined by the following steps: the scheduling center of the CDN network determines the node servers according to the network connection between the mobile terminal and each node server on the CDN network. One of the node servers serves as the streaming server.
- node servers can be deployed on one CDN network, and these node servers Also known as the edge node (ie, the service node closest to the client access in the CDN network), the scheduling center of the CDN network performs unified scheduling management.
- the CDN network may be based on a network connection between the mobile terminal and each node server.
- the node server acts as a streaming server that provides services to the mobile terminal.
- the mobile terminal establishes a data transmission link based on a websocket protocol between the broadcast address and the streaming media server according to the obtained play address.
- the mobile terminal may establish a data transmission link based on the websocket protocol between the broadcast address and the streaming media server according to the obtained play address. Specifically, the mobile terminal may send an access request to the streaming media server, and the streaming media server may complete establishment of 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 is automatically synchronized to the respective node servers in a binary file form through an internal service update channel of the CDN network.
- the websocket 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 mobile terminal sends a target connection request to the streaming media server, where the target connection request includes information about a connection object.
- the mobile terminal may send a target connection request to the streaming media server.
- the target connection request may include information about 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 depend on the connection object.
- the corresponding audio and video data is found in the server local or network.
- connection object here is the object pointed by the live broadcast instruction, that is, the user wants to watch a live broadcast audio, a live video, or a live video corresponding to the content broadcasted by the audio and video through the mobile terminal.
- the sequential execution order is not distinguished between the above steps 101, 102, and 103, and the above steps 101 and 103 can be performed simultaneously.
- the mobile terminal can directly send the target connection request to the service background, so that the service background feeds back the play address to the mobile terminal, and the service background can simultaneously deliver the target connection request to the streaming media server, which is equivalent to the mobile
- the terminal indirectly sends the target connection request to the streaming server.
- the mobile terminal it only needs to perform one action to implement the above steps 101 and 103.
- the above step 102 can also be performed after the step 103.
- the mobile terminal does not need to wait for the execution of the step 102 to complete the data.
- the target connection request is sent to the streaming server.
- the streaming server can receive the target connection request and prepare the corresponding streaming media data for acquisition and transmission before step 102.
- the mobile terminal may directly send a target connection request to the scheduling center, and the scheduling center allocates a corresponding streaming media server to the mobile terminal. And sending the target connection request to the streaming server. After receiving the target connection request, the streaming server establishes the above data transmission link with the mobile terminal.
- the mobile terminal acquires a first data packet from the streaming media server by using the data transmission link, where the first data packet is corresponding to the streaming media server according to the information of the connection object.
- the streaming media server After the mobile terminal sends the target connection request to the streaming media server, the streaming media server performs the following steps to obtain corresponding streaming media data according to the target connection request, as shown in FIG. 2
- the streaming media server receives a target connection request from the mobile terminal.
- 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 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, if yes, step 204 is performed, and if not, step 205 is performed;
- the streaming media server reuses streaming media data in a buffer queue corresponding to the first connection request. Go to the target event processor, so that the target event processor sends the multiplexed streaming media data to the mobile terminal; the first connection request refers to the 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 server creates a new buffer queue corresponding to the target connection request.
- the streaming media server extracts a corresponding stream according to information about the connection object of the target connection request.
- the streaming media server distributes the extracted streaming media data to the target event processor by using the new buffer queue, so that the target event processor sends the extracted streaming media data to the target event processor.
- the mobile terminal The mobile terminal.
- each event processor data transmission is performed by each event processor with each different connection request.
- the streaming server can pre-create each Handler, that is, each event handler, by using the websocket package in the officially maintained standard package go.net of the go language.
- These event handlers can primarily target HTTP requests.
- the streaming server may bind the ws address (for example, ws://.. Jws/stream_name, the address represents a flow, and the stre am_name represents an arbitrary flow name) to the Handler, a ws address, respectively. Bind 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 mobile terminal.
- connection object of the 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 target connection request needs to be acquired.
- the streaming media data has been acquired in advance by another connection request, and the streaming media data obtained by another connection request is currently being cached on the streaming media server. Therefore, 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 to be provided 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 203 may be specifically: the streaming media server querying whether the connection object of the other connection management request 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 StreamM anager corresponding to the target connection request needs to be registered into the The streaming media connection pool is used to subsequently establish a buffer queue corresponding to the target connection request.
- step 204 it can be understood that when there is a first connection request that can be multiplexed, the streaming data in the buffer queue corresponding to the first connection request is handed over to the target event processor, thereby target event processing.
- the device sends the streaming media data to the mobile terminal to implement fast acquisition of the streaming media data.
- the data media server can provide the streaming media data support service to the mobile terminal more efficiently. It should be noted that due to the relationship between the mobile terminal and the streaming server The data transmission link of the websocket protocol is adopted. Therefore, before the target event processor sends the streaming media data, the data packet is encapsulated by the websocket protocol to obtain the first data packet, and then the first data packet is transmitted through the data. A link is sent to the mobile terminal.
- step 205 it can be understood that, when the connection object that does not have other connection request is 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. In order to obtain streaming media data for the target connection request.
- the buffer server may be configured 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 In the buffer queue, the StreamManager corresponding to the target connection request is registered in the streaming media connection pool. Therefore, the streaming media server creates a corresponding buffer queue for the StreamManager registered in the streaming media connection pool, that is, the streaming server is unable to adopt the data.
- the multiplexing method obtains the connection request of the streaming media data to create a corresponding buffer queue.
- 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 use the information of the connection object from the server local or network. Find the corresponding 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 the streaming media service in the format of the RTMP data packet. Corresponding buffer queue on the server.
- 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.
- step 207 it should be noted that, since the websock et protocol data transmission link is used between the mobile terminal and the streaming media server, the target event processor needs to adopt the websocket protocol to send these streaming media data.
- the streaming media data is encapsulated to obtain a first data packet, and then the first data packet is sent to the mobile terminal through a data transmission link.
- 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 establish a Monitor through Go prediction, and register the remote procedure call through the RPC (remote procedure call) mechanism, which will connect the statistics (RTMP connection number, each buffer queue size, network connection status, client request IP, The number of abnormal times, CPU usage, etc. is passed as a parameter to the Monitor for statistics.
- 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 these parameter information. In addition, it can also pass the CDN internal letter. Let the channel (for example: HTTP or TCP connection) submit the Websocket stream connection status of the streaming server to the dispatch center according to the CDN internal data transfer protocol.
- 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 foregoing steps 201-207 mainly describe the processing procedure of the streaming media server after receiving the target connection request from the streaming media server.
- the processing procedure of the streaming media server is not limited to the foregoing steps 201-207. It should be understood that the content described in the foregoing steps 201-207 is not a limitation on the working steps of the streaming media server in this embodiment.
- the transmission rate of the data transmission link is not affected by the receiving end (mobile terminal), and the mobile terminal may preset a certain size of the buffer space. Used to cache the first packet received.
- the live broadcast processing method of the audio and video further includes:
- the mobile terminal caches the obtained first data packet in a preset cache space.
- the mobile terminal performs statistics on a current transmission rate of each data transmission link and a status of the cache space.
- the mobile terminal adjusts a size of the buffer space according to the transmission rate and a state of the cache space.
- the mobile terminal may also perform state statistics, such as a cardon rate, a transmission rate, and a jitter, on each link in the first data packet, and then perform a data frame loss according to the result of the state statistics. Accelerate the catch-up operation of decoding, rendering, etc. to dynamically adjust the available cache space for the first packet.
- state statistics such as a cardon rate, a transmission rate, and a jitter
- the mobile terminal dynamically adjusts the size of the buffer space. Generally speaking, if the current transmission rate is large, it indicates that the network status is good, and the buffer space can be appropriately reduced; If the current transmission rate is small, it indicates that the network status is poor. Therefore, in order to ensure the liveness of the live broadcast, the buffer space should be moderately increased.
- the mobile terminal decapsulates the first data packet to obtain streaming media data corresponding to the connection object, where the streaming media data includes audio data and/or video data.
- the mobile terminal performs decoding and playing on the streaming media data by using an html5-based browser.
- the first data packet is encapsulated by the websocket protocol
- the mobile terminal needs to decapsulate the data by using the websocket protocol to obtain the first data packet.
- Streaming data in a packet which can be frequency data and / Or video data.
- the mobile terminal can decode and play the streaming media data through an html5 based browser.
- the streaming media data may be specifically RTMP stream data.
- the streaming media server is one of the node servers of the CDN network; the streaming media server extracts corresponding streaming media data according to the information of the connection object of the target connection request, specifically: the streaming media server according to the The information of the connection object of the target connection request pulls the corresponding RTMP stream data from the central node of the CD N network.
- the streaming media server Before the streaming media server sends the first data packet to the mobile terminal, the streaming media server performs data encapsulation on the extracted RTMP stream data by using a websocket protocol, to obtain the first The data packet, after the mobile terminal receives and decapsulates the first data packet, obtains RTMP stream data in the first data packet. Therefore, the mobile terminal needs to decode and play the RTMP stream data according to the RTMP protocol through an html5 based browser.
- the streaming media server is an edge node server in the CDN network, and obtains streaming media data, and the streaming media server first pulls corresponding streaming media data from a central node of the CDN network.
- the communication process adopts the RTMP protocol; after the streaming media data is obtained, the streaming media data is encapsulated into a first data packet by using a websocket protocol, and then the first data packet is sent to the mobile terminal, and the transmitted communication process adopts a websocket protocol. . After the mobile terminal (ie, the client) obtains the first data packet, the first data packet is unpacked and decoded, and the audio and video broadcast can be realized.
- the mobile terminal may receive the first data packet from the streaming media server after the websocket server receives the web data packet through the websocket client.
- the RTMP stream data after the first packet is unpacked is received in the onMessage callback of the Websocket, and placed in the queue to be demultiplexed.
- the mobile terminal first receives the audio and video metadata frame, and the mobile terminal parses the metadata information to perform corresponding audio and video decoding parameter configuration.
- the normal data frame of the audio and video is received, and the mobile terminal distinguishes the audio and video data types, and after decapsulation, the media encoded data is respectively placed in the decoding queue of the corresponding media type.
- the mobile terminal starts the media decoding worker thread, and each stream can establish a decoding thread according to the corresponding media type.
- video data the mobile terminal can use the H.264 decoding library Boardway.js, new The Decoder object is configured and decoded.
- audio data the mobile terminal calls the AudioContext's decodeAudioData for decoding, and puts the decoded data into the output queue.
- the video data is used to render the decoded YUV video frame from the output queue through the rendering thread, and the WebGL (the drawing standard combined with javascript and OpenGL ES 2.0) is called to draw on the Canvas.
- the mobile terminal connects the decoded array to the AudioSourceNode through the AudioContext for playback.
- the audio and video synchronization judgment is required to perform feedback adjustment before rendering and playing.
- the mobile terminal may use the audio and video synchronization strategy algorithm to perform audio and video data frame determination, and based on the audio time, on the basis of ensuring the sequential playback of the audio data, according to the result, it is judged whether to catch up or Discard some of the decoded video frames, ensuring simultaneous audio and video output on the day.
- the mobile terminal outputs the audio and video through the browser, and can also implement multi-picture and mixing control.
- multi-screen control can be implemented in two ways, one is to create a single canvas, the multi-stream picture is limited according to the viewport to define the drawing range; the other is to create a canvas separately, which is convenient for controlling the display position separately, in establishing the canvas. Then get the context of WebGL, set the rendered texture for the picture to draw.
- the mobile terminal can create multiple AudioBufferSources through the AudioContext, connect the decoded data of the corresponding stream to the corresponding AudioBufferSource, and then realize the mixing output, and also separately control the sound parameters of a certain stream.
- a live broadcast processing method for audio and video provided by this embodiment is compared with the existing RTMP streaming technology.
- RTMP stream data is demultiplexed and decoded mainly by the Flash player on the browser PC side, and the mobile terminal does not have corresponding player support due to the system platform. If it needs to support the direct transmission of RTMP stream data, it must be processed. Browser long connection and compatibility issues; compared with the existing HLS streaming technology, the stream data is actually a tiled slice file, the m3u8 description file is used to update the slice file link address, and the player downloads the corresponding slice file in advance. The effect of continuous playback is realized, but the mechanism of file slicing is easy to cause the playability to be less strong, and the delay is usually more than 10s, which greatly affects the reality of audio and video live broadcast.
- the live broadcast processing method of the audio and video provided in this embodiment can realize full-duplex communication based on the Websocket protocol, and can customize the transmission data format, and the transmission can improve security, and the mainstream browsing of the mobile terminal currently on the market. Both have good support for the Websocket protocol, just one HTTP request Continuous audio and video data transmission to avoid synchronization delay, the effect is good.
- the method uses H.264 decoding of the video data and then uses Canvas to draw, which can support multiple picture drawing; the audio data can be directly sent to the AudioContext for AAC decoding and playing. It can support multi-channel playback, make full use of the hardware acceleration capability of mobile terminals, and further improve the realism of audio and video live broadcast.
- FIG. 7 is a structural diagram of an embodiment of a live broadcast processing apparatus for audio and video in an embodiment of the present application.
- a live broadcast processing device for audio and video includes:
- the play address obtaining module 701 is configured to obtain a play address of the websocket protocol from the service background according to the input live command, where the play address is maintained by the service background and directed to a streaming media server;
- the transmission link establishing module 702 is configured to establish a data transmission link based on the websocket protocol between the streaming address server and the streaming media server according to the obtained play address;
- the request sending module 703 is configured to send a target connection request to the streaming media server, where the target connection request includes information about the connection object.
- a data packet obtaining module 704 configured to acquire, by using the data transmission link, a first data packet from the streaming media server, where the first data packet is information that is used by the streaming media server according to the connection object. Extracting corresponding streaming media data, and using the websocket protocol to perform data encapsulation on the extracted streaming media data;
- a data packet decapsulation module 705, configured to decapsulate the first data packet to obtain streaming media data corresponding to the connection object;
- the streaming media data includes audio data and/or video data;
- the decoding play module 706 is configured to perform decoding and playing of the streaming media data by using an html5-based browser.
- the streaming media server pointed to by the play address is determined by the following steps:
- a scheduling center of the CDN network is according to the mobile terminal and each node server on the CDN network
- the network connection condition determines one of the node servers as the streaming server.
- the streaming media server performs the following steps:
- the streaming server receives the target connection request from the mobile terminal
- the streaming media server creates a target event processor corresponding to the target connection request, and the target event processor uses the websocket protocol to perform data transmission with 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 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 the mobile terminal;
- the first connection request refers to a connection between the connection object and the target connection request in the other connection request The same connection request for the object;
- 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.
- Data is sent to the mobile terminal.
- the streaming media server may be one of the node servers of the CDN network
- the extracting, by the streaming media server, the corresponding streaming media data according to the information of the connection object of the target connection request may be: the streaming media server, according to the information of the connection object of the target connection request, from the CDN network.
- the central node pulls the corresponding RTMP stream data;
- the streaming media server Before the streaming media server sends the first data packet to the mobile terminal, the streaming media server performs data encapsulation on the extracted RTMP stream data by using a websocket protocol, to obtain the first a data packet;
- the decoding and playing module is specifically configured to: the mobile terminal according to an RT5 based browser according to an RTMP
- the protocol decodes and plays the RTMP stream data.
- the live broadcast processing device of the audio and video may further include:
- a cache module configured to cache the obtained first data packet in a preset cache space
- a state statistics module configured to perform statistics on a current transmission rate of each data transmission link and a state of the cache space
- a cache space adjustment module configured to adjust a size of the cache space according to the transmission rate and a state of the cache space; wherein, the larger the current transmission rate, the smaller the adjusted cache space; The smaller the current transmission rate, the larger the adjusted buffer space.
- the mobile terminal 8 of this embodiment includes: a processor 80, a memory 81, and computer readable instructions 82 stored in the memory 81 and executable on the processor 80, for example, performing audio and video The program of the live processing method.
- the processor 80 executes the computer readable instructions 82 to implement the steps in the live processing method embodiment of the respective audio and video, such as steps 101 to 106 shown in FIG.
- the processor 80 executes the computer readable instructions 82 to implement the functions of the modules/units in the various apparatus embodiments described above, such as the functions of the modules 701 to 706 shown in FIG.
- the computer readable instructions 82 may be partitioned into one or more modules/units, the one or more modules/units being stored in the memory 81 and by the processor 80 is 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 82 in the mobile terminal 8.
- the mobile terminal 8 may be a computing device such as a mobile phone or a tablet computer.
- the mobile terminal can include, but is not limited to, a processor 80, a memory 81.
- FIG. 8 is merely an example of the mobile terminal 8, and does not constitute a limitation of the mobile terminal 8, and may include more or less components than those illustrated, or combine some components, or different components.
- the mobile terminal may further include an input/output device, a network access device, a bus, and the like.
- the processor 80 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 (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the memory 81 may be an internal storage unit of the mobile terminal 8, such as a hard disk or a memory of the mobile terminal 8.
- the memory 81 may also be an external storage device of the mobile terminal 8, such as a plug-in hard disk provided on the mobile terminal 8, and a smart memory card (Smart Media Card,
- the memory 81 may also include both an internal storage unit of the mobile terminal 8 and an external storage device.
- the memory 81 is for storing the computer readable instructions and other programs and data required by the mobile terminal.
- the memory 81 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. .
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