CN114222086A - Method, system, medium and electronic device for scheduling audio and video code stream - Google Patents
Method, system, medium and electronic device for scheduling audio and video code stream Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
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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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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Abstract
The invention provides a method, a system, a medium and an electronic device for scheduling audio and video code streams, wherein the method is applied to a content scheduling node and comprises the following steps: analyzing received audio and video code streams to obtain key information, and determining channel identifiers of the audio and video code streams according to the key information; determining a target streaming media service node corresponding to a channel identifier of the audio/video code stream according to a first corresponding relation, wherein the first corresponding relation between the channel identifier and the streaming media service node is stored in the content scheduling node; and under the condition that the online state of the target streaming media service node is online, pushing the audio and video code stream to the target streaming media service node.
Description
Technical Field
The invention relates to the field of audio and video code stream scheduling, in particular to a method, a system, a medium and an electronic device for scheduling audio and video code streams.
Background
In the course of rapid development of the internet, a Content Delivery Network (CDN) is an important means for relieving Network congestion of the internet and increasing the response speed of internet services, and has always occupied an important position in the internet industry. With the popularization of 5G, the CDN continuously improves the interaction capacity with the user terminal by integrating edge computing capacity, and provides brand-new audio-visual entertainment experience for users.
Under the environment background of continuous upgrading of a 5G internet live broadcast mode, video forms such as 8K ultra-high definition service and Virtual Reality (VR), Augmented Reality (AR) and the like are developed in the original video form, and emerging video forms such as User Generated Content (UGC) short video, live broadcast and the like also appear. Because the internet live broadcast has diversity and variability, the technical requirements that elastic expansion can be realized according to business requirements, the content scheduling capability and the service scheduling capability are improved, and the content and the service are accurately scheduled to the node with the optimal service capability are provided for the live broadcast system based on the edge CDN.
Before pushing the stream of the audio and video code stream, an operation manager needs to successfully create a channel on a management platform in advance, and the player requests a service from a stream media service node appointed by the channel, otherwise, the player cannot play the audio and video code stream under the condition of no channel. If some streaming media service node is abnormal during playing, an operation manager needs to restore the streaming media service node in time or create a channel on the management platform again to inform the live broadcast front end to push the stream to a new streaming media service node, otherwise, the problem that the channels distributed on the streaming media service and the node cannot be played is caused. In addition, in the related art, under the condition that the management platform is abnormal, the problem that a new channel cannot be accessed occurs, and the user experience of the user is influenced.
Therefore, the technical scheme in the related technology has high dependence on manual work and a management platform, and if a server has a problem, normal service cannot be provided, so that user experience and service quality are seriously influenced. Therefore, it is very important how to realize intelligent scheduling of audio/video code streams under the condition of reducing the dependence on manual management, and effectively ensure the balance of channel content distribution and the stability of service, so that users can smoothly watch the live broadcast function.
Accordingly, there is a need for improvement in the related art to overcome the disadvantages of the related art.
Disclosure of Invention
The embodiment of the invention provides a method, a system, a medium and an electronic device for scheduling audio and video code streams, which at least solve the problem that the intelligent scheduling of the audio and video code streams cannot be realized under the condition of reducing the dependence on manual management in the related technology.
According to an aspect of the embodiments of the present invention, there is provided a method for scheduling an audio/video code stream, which is applied to a content scheduling node, and includes: analyzing received audio and video code streams to obtain key information, and determining channel identifiers of the audio and video code streams according to the key information; determining a target streaming media service node corresponding to a channel identifier of the audio/video code stream according to a first corresponding relation, wherein the first corresponding relation between the channel identifier and the streaming media service node is stored in the content scheduling node; and under the condition that the online state of the target streaming media service node is online, pushing the audio and video code stream to the target streaming media service node.
According to another aspect of the embodiments of the present invention, there is also provided a scheduling system of an audio/video code stream, including: the content scheduling node is used for analyzing received audio and video code streams to obtain key information and determining channel identifiers of the audio and video code streams according to the key information; and determining a target streaming media service node corresponding to a channel identifier of the audio and video code stream according to the first corresponding relation, and pushing the audio and video code stream to the target streaming media service node under the condition that the online state of the target streaming media service node is online, wherein the first corresponding relation between the channel identifier and the streaming media service node is stored in the content scheduling node.
According to another aspect of the embodiment of the present invention, a computer-readable storage medium is further provided, where a computer program is stored in the computer-readable storage medium, where the computer program is configured to execute the foregoing scheduling method for an audio/video code stream when the computer program runs.
According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the scheduling method of the audio/video code stream through the computer program.
According to the invention, a target streaming media service node corresponding to a channel identifier of the audio/video code stream is determined through a content scheduling node according to a first corresponding relation, wherein the first corresponding relation between the channel identifier and the streaming media service node is stored in the content scheduling node; and under the condition that the online state of the target streaming media service node is online, the audio and video code stream is pushed to the target streaming media service node, a management platform is not needed, a content scheduling node automatically selects a proper streaming media service node to forward and serve the audio and video code stream according to the key information of the audio and video code stream and the online condition of the streaming media service node, and under the condition of reducing the dependence on manual management, the intelligent scheduling of the audio and video code stream is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of a scheduling system of an audio/video code stream in the related art;
fig. 2 is a block diagram of a hardware structure of a content scheduling node that executes a scheduling method of an audio/video code stream according to an embodiment of the present invention;
fig. 3 is a flowchart (one) of a scheduling method of an audio/video code stream according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a scheduling system for audio and video streams that implements an embodiment of the invention;
fig. 5 is a flowchart (two) of a scheduling method of an audio/video code stream according to an embodiment of the present invention;
fig. 6 is a flowchart (iii) of a scheduling method of an audio/video code stream according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a scheduling system of an audio/video code stream according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Technical terms used in the present invention will be explained next.
CDN (content Delivery network) refers to a content Delivery network constructed on a network, and adopts a novel network construction mode, namely cache servers are distributed in a region or network where user access is relatively concentrated, when a user accesses the network, the user access is directed to a cache server which is closest to the user and works normally, the cache server directly responds to a user request, and response speed and hit rate of the user access are improved.
VR (Virtual Reality) is a three-dimensional environment that is computer-generated and interactive, using a computer graphics system and various real and control energy interface devices in a comprehensive manner.
AR (Augmented Reality) is a technology for calculating the position and angle of a camera image in real time and adding a corresponding image.
UGC (User Generated Content) is an emerging network information resource authoring and organization mode in a Web environment, i.e., a User presents or provides personally edited Content to other users through an internet platform.
The RTMP (Real Time Messaging Protocol) is a Protocol family based on the TCP Protocol, and includes various protocols such as RTMP basic Protocol, etc. for Real Time data communication, and can support various application software and standard protocols, for example, the software supporting the Protocol includes Adobe, and the standard Protocol supported is Adobe's Real Time Messaging Protocol.
RTSP (Real Time Streaming Protocol) is a multimedia Streaming Protocol for controlling audio or video, and standard protocols supported by the RTSP include RFC 2326.
FLV (Flash Video, streaming media Format) is a Video transmission Format and can support standards such as Adobe Flash Video File Format Specification Version 10.1.
HLS (HTTP Live streaming) is a dynamic code rate self-adaption technology, is used for audio and video services of a mobile terminal, and can support a streaming media network transmission protocol RFC8216 based on HTTP.
A URL (Uniform Resource Locator) is a representation of the location and access method to a Resource available from the internet.
The method embodiments provided in the embodiments of the present application may be executed in a content scheduling node or similar computing device. Taking the operation on a content scheduling node as an example, fig. 2 is a hardware structure block diagram of the content scheduling node of the scheduling method for executing the audio and video code stream according to the embodiment of the present invention. As shown in fig. 2, the content scheduling node may include one or more processors 202 (only one is shown in fig. 2), where the processors 202 may include, but are not limited to, microprocessors (micro processor units, MPU) or Programmable Logic Devices (PLDs), and a memory 204 for storing data, and in an exemplary embodiment, the content scheduling node may further include a transmission device 206 for communication function and an input-output device 208. It will be understood by those of ordinary skill in the art that the structure shown in fig. 2 is only an illustration, and does not limit the structure of the content scheduling node. For example, the content scheduling node may also include more or fewer components than shown in fig. 2, or have a different configuration with equivalent functionality to that shown in fig. 2 or with more functionality than that shown in fig. 2.
The memory 204 may be configured to store a computer program, for example, a software program and a module of application software, such as a computer program corresponding to the scheduling method of an audio/video bitstream in the embodiment of the present invention, and the processor 202 executes various functional applications and data processing by running the computer program stored in the memory 204, that is, implements the method described above. Memory 204 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 204 may further include memory located remotely from the processor 202, which may be connected to the content scheduling node over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission means 206 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the content scheduling node. In one example, the transmission device 206 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 206 can be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In this embodiment, a scheduling method of an audio/video code stream is provided, which is applied to a content scheduling node, and fig. 3 is a flowchart (one) of a scheduling method of an audio/video code stream according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:
step S302, key information is obtained by analyzing the received audio and video code stream, and a channel identifier of the audio and video code stream is determined according to the key information.
Step S304, determining a target streaming media service node corresponding to a channel identifier of the audio/video code stream according to the first corresponding relationship, wherein the first corresponding relationship between the channel identifier and the streaming media service node is stored in the content scheduling node.
Step S306, in a case that the online status of the target streaming media service node is online, pushing the audio/video code stream to the target streaming media service node.
Through the steps, key information is analyzed and obtained from the received audio and video code stream, the channel identification of the audio and video code stream is determined according to the key information, determining a target streaming media service node corresponding to the channel identifier of the audio/video code stream according to the first corresponding relation, wherein, the content scheduling node stores a first corresponding relation between a channel identifier and a streaming media service node, under the condition that the online state of the target streaming media service node is online, the audio and video code stream is pushed to the target streaming media service node, and the content scheduling node can schedule the streaming media service node according to the key information of the audio and video code stream and the online condition of the streaming media service node, automatically selecting a proper streaming media service node to forward and serve the audio and video code stream, under the condition of reducing the dependence on manual management, the intelligent scheduling of the audio and video code stream is realized.
It should be noted that the content scheduling node is used to perform content and service scheduling on the audio/video code stream, and therefore, the content scheduling node may also be represented as a content and service scheduling node.
In an embodiment, the content scheduling node may be understood as a server, and the server is functionally partitioned according to different functions implemented by the content scheduling node, for example, the server is divided into a first functional area, a second functional area, and a third functional area, where the first functional area is used to parse a received audio/video code stream to determine a channel identifier of the audio/video code stream, the second functional area is used to determine a target streaming media service node corresponding to the channel identifier of the audio/video code stream according to a first corresponding relationship, and the third functional area is used to push the audio/video code stream to the target streaming media service node when an online state of the target streaming media service node is online.
It should be noted that the first corresponding relationship may be understood as a mapping relationship between target streaming media service nodes corresponding to channel identifiers of the audio/video code streams. In one embodiment, the first corresponding relationship may be represented in a form of a data table, for example, a data table is generated according to the channel identifier of the audio/video code stream and the node information of the target streaming media service node. When any one of the channel identifier of the audio/video code stream or the node information of the target streaming media service node is known, the remaining information can be determined according to the channel information table.
The above Channel Identification may be understood as a unique Identification for determining a Channel, denoted by (Channel Identification, CID). The calculation method of the CID includes a character string splicing method or fixed length coding, etc., and the present invention does not limit the specific calculation method.
Optionally, in an embodiment, a technical solution after determining a target streaming media service node corresponding to a channel identifier of the audio/video code stream according to the first corresponding relationship includes: acquiring the equipment identifier of the target streaming media service node; and acquiring the online state of the equipment corresponding to the equipment identifier of the target streaming media service node according to the second corresponding relation, and taking the online state of the equipment as the online state of the target streaming media service node, wherein the second corresponding relation between the equipment identifier and the online state of the equipment is stored in the content scheduling node.
It should be noted that the second corresponding relationship may be understood as a mapping relationship between the device identifier of the streaming media service node and the online status of the streaming media service node. In one embodiment, for example, the second correspondence may be embodied in the form of a hash table, in which the device identification of the streaming media service node and the presence status of the streaming media service node may be included.
The online state of the streaming media service node can be determined by heartbeat information of the streaming media service node. For example, in one embodiment, if the heartbeat of the streaming media service node a is not detected, the streaming media service node a is considered abnormal. The heartbeat message includes information such as the current incoming flow and the current outgoing flow of the streaming media service node. In one embodiment, if the number of heartbeats of the streaming media service node B is detected to be abnormal, the online states of all the streaming media service nodes are determined again, and a hash table of the streaming media service node is generated again.
In addition, in an embodiment, the second correspondence may also indicate a mapping relationship between a device identifier of the streaming media service node and a service address of the streaming media service node, and since the corresponding server may be determined according to the service address of the streaming media service node, when the service address corresponding to the device identifier is known, a server providing a service may be further determined, for example, when the streaming media service node with the device identifier Q1 cannot normally operate, if it is determined that the service address corresponding to the streaming media service node with the device identifier Q1 is 000.000.000.00, it may prompt a human to overhaul the server Q with the service address 000.000.000.00.
Optionally, in order to better understand how to determine the target streaming media service node corresponding to the channel identifier of the audio/video code stream according to the first corresponding relationship in step S304, in an embodiment, a technical scheme after determining the channel identifier of the audio/video code stream according to the key information includes: acquiring the incoming flow and the outgoing flow of each online streaming media service node under the condition that a target streaming media service node corresponding to a channel identifier of the audio and video code stream is not determined according to the first corresponding relation or the online state of the target streaming media service node is determined to be offline according to the second corresponding relation; and determining the streaming media service nodes to be pushed by the audio and video code stream according to the incoming flow and the outgoing flow of each streaming media service node.
It should be noted that there may be multiple technical solutions for acquiring the ingress traffic and the egress traffic of each online streaming media service node, for example, in an embodiment, the ingress traffic and the egress traffic of each streaming media service node are monitored in real time by a code, the ingress traffic and the egress traffic of each streaming media service node are pulled to the hash table of the streaming media service node in real time, the latest ingress traffic and egress traffic of each streaming media service node are further acquired by the hash table, and by recording the current ingress traffic and egress traffic of the streaming media service node in real time, the pressure for monitoring the traffic can be reduced, the query speed of the current ingress traffic and egress traffic of the streaming media service node is increased, and the efficiency of determining the streaming media service node to be pushed by the audio/video code stream is increased.
Or, in other embodiments, the streaming media service node to be pushed by the audio/video code stream may also be determined directly by using the ingress traffic and the egress traffic of each streaming media service node pulled by the code.
Optionally, the technical scheme for determining the streaming media service node to be pushed by the audio/video code stream according to the incoming flow and the outgoing flow of each streaming media service node includes: determining an inlet flow minimum value and an outlet flow minimum value from each streaming media service node; determining the streaming media service node corresponding to the minimum value of the outlet flow as a streaming media service node to be pushed by the audio and video code stream under the condition that the weight of the inlet flow is smaller than the weight of the outlet flow; and under the condition that the weight of the inlet flow is greater than that of the outlet flow, determining the streaming media service node corresponding to the minimum value of the inlet flow as the streaming media service node to be pushed by the audio and video code stream.
It should be noted that the preset threshold may be 100Mb/s, 10Mb/s, or 1Mb/s, but is not limited thereto, and the invention does not limit the preset threshold.
In one embodiment, in the case that the preset threshold is 100Mb/s, the preset first weight of the incoming traffic is 0.3, the preset second weight of the outgoing traffic is 0.7, if the minimum value of the ingress traffic and the minimum value of the egress traffic of the streaming service node E are 50Mb/s and 10Mb/s, respectively, the minimum value of the ingress traffic and the minimum value of the egress traffic of the streaming service node F are 30Mb/s and 20Mb/s, respectively, the node traffic of the streaming media serving node E is (50 × 0.3+10 × 0.7) Mb/s, the node traffic of the streaming media serving node F is (30 × 0.3+20 × 0.7) Mb/s, because the node traffic of the streaming media service node E is smaller than that of the streaming media service node F, the streaming media service node E has smaller traffic pressure, therefore, the streaming media service node E is used as a streaming media service node to be pushed by the audio/video code stream.
It should be noted that, the technical scheme for determining the streaming media service node to be pushed by the audio/video code stream according to the incoming flow and the outgoing flow of each streaming media service node further includes: and if the preset first weight is greater than the second weight, directly taking the streaming media service node with the incoming flow smaller than a preset threshold value as the streaming media service node to be pushed by the audio and video code stream. For example, in one embodiment, the preset first weight of the incoming traffic is 0.9, the second weight of the outgoing traffic is 0.4, and if the preset threshold is 100Mb/s, if the ingress traffic of the streaming media service node C is 50Mb/s, the streaming media service node C is directly determined to be the streaming media service node to be pushed by the audio/video bitstream.
The technical solution that the second weight is greater than the first weight may refer to the technical solution that the first weight is greater than the second weight, and the details of the present invention are not repeated herein.
Optionally, in an embodiment, the event type of the audio/video code stream is determined; under the condition that the event indicating the acquisition of the audio and video code stream is a starting event, determining a target streaming media service node corresponding to a channel identifier of the audio and video code stream according to a first corresponding relation; and deleting the channel identifier of the audio and video code stream from the first corresponding relation under the condition that the event type indicates that the event for acquiring the audio and video code stream is an end event.
Optionally, in an embodiment, a technical solution is further provided when there are a plurality of content scheduling nodes, where the technical solution includes: determining a first corresponding relation after the channel adding operation or the channel deleting operation is executed under the condition that any one of the content scheduling nodes receives the channel adding operation or the channel deleting operation, and obtaining a third corresponding relation; and synchronizing the third corresponding relation to other content scheduling nodes, wherein the other content scheduling nodes are other nodes except the any content scheduling node in the plurality of content scheduling nodes.
It should be noted that the third corresponding relationship may be understood as a first corresponding relationship after determining that a channel adding operation or a channel deleting operation is executed, that is, the channel adding operation or the channel deleting operation received by any content scheduling node of the plurality of content scheduling nodes is synchronized to the remaining content scheduling nodes in real time, so as to enhance the stability of the scheduling method of the audio/video code stream.
In one embodiment, the content scheduling node may be deployed jointly with the streaming media service node, that is, on the same server, or may be deployed separately. Under the condition that the content scheduling node and the streaming media service node can be deployed on the same server, the node information of the streaming media service node can be directly synchronized to the content scheduling node on the same server in real time. Under the condition that the content scheduling node and the streaming media service node can be deployed on different servers, a message can be sent between the servers, or a proxy service is used for acquiring the change condition of the server corresponding to the content scheduling node and further forwarding the change condition to the server corresponding to the streaming media service node.
It should be noted that the servers corresponding to the content scheduling nodes and the servers corresponding to the streaming media service nodes may share one database, and the forwarding information of the audio/video code stream of each channel is stored in the database, so that when a channel service corresponding to a server corresponding to any one streaming media service node is abnormal, other channel services can still be performed normally.
Optionally, in order to better understand how to analyze the received audio/video code stream in step S302 to obtain the key information, the protocol type of the audio/video code stream may be determined; and analyzing the audio and video code stream according to the protocol type to obtain the key information.
It should be noted that the form of the key information parsed from the audio/video code stream may be determined according to a protocol used by the audio/video code stream, for example, in an embodiment, if the used audio/video code stream protocol is an RTMP protocol, domain, app, and name field information may be extracted from a URL as the key information of the channel. If the used audio/video code stream protocol is the RTSP protocol, abs _ path and content _ name field information can be extracted from the URL as the key information of the channel. If the used audio/video code stream protocol is other protocols except RTMP protocol and RTSP protocol, similar key information can be extracted to be used for identifying a unique channel, and the type of the used audio/video code stream protocol is not limited in the invention.
The method for scheduling the audio and video code streams can be applied to live broadcast systems based on various protocol types, the live broadcast system can be deployed on edge CDN nodes in a 5G internet environment as an edge live broadcast system, and can also be deployed in a cloud center as a live broadcast system on the cloud, the method for scheduling the audio and video code streams has no influence no matter which node in which internet environment the live broadcast system is located, and in order to facilitate introduction, the method for scheduling the audio and video code streams is introduced by taking the live broadcast system located on the edge CDN nodes as an example.
Fig. 4 is a schematic diagram of a scheduling system for audio and video code streams, which implements the embodiment of the present invention. As shown in fig. 4, the scheduling system of the audio/video code stream may include a live broadcast front end, a player, a management platform, a content and service scheduling node, and a streaming media service node. The content and service scheduling node (equivalent to the content scheduling node in fig. 3) may be deployed together with the streaming media service node, that is, deployed on the same server, or separately deployed. Moreover, a plurality of content and service scheduling nodes and streaming media service nodes (for example, streaming media service node 1, streaming media service node 2, and streaming media service node n in fig. 4) may be deployed on the scheduling system of the audio/video code stream, and the management platform is responsible for configuration management and log management of all the content and service scheduling nodes and streaming media service nodes.
The content and service scheduling nodes are used for monitoring all streaming media service nodes and intelligently forwarding the audio and video code streams and the playing requests to the corresponding streaming media service nodes. In one embodiment, the content and service scheduling node may include a node management module, a content scheduling module, and a service scheduling module, each of which has the following main functions:
the node management module is used for monitoring and managing all streaming media service nodes, detecting heartbeat information of each streaming media service node at regular time, and determining the online state of each streaming media service node according to the heartbeat information. The heartbeat message includes information such as the current incoming flow and the current outgoing flow of the streaming media service node. For example, if the heartbeat of the streaming media service node D is not detected, the online state of the streaming media service node D is considered to be offline, and each time the content and service scheduling node detects that the online state of the streaming media service node changes, the hash table of the online streaming media service node is regenerated according to the changed online state of the streaming media service node.
The content scheduling module is used for realizing load balance of the content of a live channel at the live front end, forwarding the audio and video code stream to the streaming media service node, storing key information in the audio and video code stream and information of the streaming media service node in a channel information table (equivalent to the data table), preferentially searching the corresponding streaming media service node from the channel information table when the audio and video code stream comes in, and if the key information and the information of the streaming media service node are not searched or the corresponding streaming media service node is not on line, selecting an on-line streaming media service node for forwarding according to the key information and the information of the streaming media service node, and updating the channel information table again.
The service scheduling module is used for forwarding the playing service request from the player to the corresponding streaming media service node, searching the corresponding streaming media service node in the channel information table according to the key information of the channel in the playing service request, and forwarding the playing service request to the streaming media service node.
In addition, the following embodiments and drawings may be combined to describe a scheduling method of an audio/video stream in the present invention.
Fig. 5 is a flowchart (ii) of a scheduling method of an audio/video code stream according to an embodiment of the present invention. In this embodiment, a scheduling method of an audio and video stream is described with reference to fig. 5, and as shown in fig. 5, implementation steps of the scheduling method of an audio and video stream are specifically as follows:
step S502: and receiving the audio and video code stream from the live broadcast front end.
Step S504: and the content and service scheduling node extracts key information from the audio and video code stream.
It should be noted that if the audio/video code stream protocol is the RTMP protocol, domain, app, and name field information may be extracted from the URL as key information of the channel; if the audio/video code stream protocol is the RTSP protocol, abs _ path and content _ name field information may be extracted from the URL as the key information of the channel. In addition, other audio and video code stream protocols can extract similar key information to uniquely identify one channel, and the audio and video code stream protocols are not limited in the invention.
Step S506: and calculating the channel identification CID according to the key information in the code stream.
Wherein, a character string splicing method or fixed length coding, etc. can be used, the specific calculation method is not limited in the invention,
step S508: and the content and service scheduling node extracts the event type of the code stream and determines whether the event type of the code stream is a starting event.
Step S510: and starting the plug flow of the audio and video code stream under the condition that the event type of the code stream is a starting event.
Step S512: and if the channel corresponding to the CID exists in the CID to channel information table, determining that the query is successful, and executing step S520, and if the channel does not exist, determining that the query is failed, and executing step S514.
Step S514: and determining which streaming media service node is selected according to the CID and the incoming flow and the outgoing flow of each streaming media service node.
It should be noted that, before executing step S514, it is necessary to check whether the streaming media service node corresponding to the channel is online, if so, step S520 is executed, and if the streaming media service node is not online or the channel does not exist in the channel information table, step S516 is executed.
The selection method can use a hash algorithm or a sorting algorithm, and the like, and the invention does not limit the specific selection method as long as the probability that the online streaming media service node with lower incoming and outgoing flow is selected is higher, thereby realizing the purpose of balancing the content and the service load.
Step S516: and forwarding the audio/video code stream to the streaming media service node selected in step S514, and adding the CID of the channel and the node information corresponding to the information of the streaming media service node to the channel information table.
Step S518: channel synchronization messages are sent to other content and service scheduling nodes.
In one embodiment, in the case that the content and service scheduling node adds node information of the streaming service node to the channel information table, it needs to send a channel synchronization message to other content and service scheduling nodes.
Step S520: and forwarding the audio and video code stream to a corresponding streaming media service node.
Step S522: after receiving the audio and video code stream, the streaming media service node checks the protocol type of the code stream, converts the code stream into RTMP, FLV and HLS protocols, and generates an HLS index file (m3u8 file) and ts fragments under the specified directory of the server.
Step S524: and under the condition that the event type of the code stream is an end event, inquiring whether the channel exists in the channel information table according to the CID, if so, determining that the inquiry is successful, and executing step S526, otherwise, determining that the inquiry is failed, and executing step S530.
And step S526, deleting the node information of the streaming media service node in the channel information table.
Step S528: when finding that a channel needs to be added or deleted, the content and service scheduling node needs to send a channel synchronization message to other content and service scheduling nodes, so that when a play request comes, the content and service scheduling node can also normally schedule the channel to a corresponding streaming media service node through other content and scheduling nodes.
Step S530: no treatment is performed.
The embodiment provides a method and a system for scheduling audio and video plug-flow, the system simplifies the function of a management platform, the management platform does not need to manage channel information, a unified fixed plug-flow address and a service address are provided externally, and a suitable streaming media service node is automatically selected by a content and service scheduling node according to key information of an audio and video code stream and the online condition of the streaming media service node to perform content forwarding and service, so that the intelligent scheduling function of the content and service is realized, excessive dependence on operation management personnel is avoided, normal service under the condition of balanced and abnormal channel content distribution is ensured, further, user experience is improved, and the stability and reliability of the system are enhanced.
Fig. 6 is a flowchart (iii) of a scheduling method of an audio/video code stream according to an embodiment of the present invention. In this embodiment, a scheduling method of an audio and video stream is described with reference to fig. 6, and as shown in fig. 6, implementation steps of the scheduling method of an audio and video stream are specifically as follows:
step S602: the content and service scheduling node receives a play request from the player.
Step S604: the content and service scheduling node extracts key information of the channel in the request message.
Step S606: and calculating the channel identification CID according to the key information.
Step S608: and inquiring the streaming media service node corresponding to the channel according to the CID to channel information table. If the query is successful, step S610 is executed, and if the query is failed, step S614 is executed.
Step S610: and forwarding the playing service request to the corresponding streaming media service node.
It should be noted that, the streaming media service node determines the protocol type of the request, and if the protocol type is the RTMP, directly forwards the RTMP protocol code stream to the player; if the protocol type is FLV, directly packaging the RTMP code stream into an FLV protocol code stream in real time, and returning the FLV code stream to the player; if the protocol type is HLS, the player firstly requests an m3u8 file, a ts file list is arranged in the file, the ts file list is played sequentially through the given ts file address, and during live broadcasting, the player continuously requests an m3u8 file to check whether the ts list has a new ts slice.
Step S612: and returning the code stream of the corresponding channel through the streaming media service node.
Step S614: because the streaming media service node corresponding to the channel is not queried, the information returned to the streaming media service node corresponding to the channel fails.
The invention provides a live streaming-based content intelligent scheduling method, which does not need operators to create and delete channels on a management platform, the management platform does not need to manage channel information, and the content and service scheduling nodes uniformly perform intelligent scheduling on the channel content and service, so that excessive dependence on the operators is avoided, the resource utilization rate is greatly improved, the operation and maintenance cost is effectively reduced, streaming media service nodes can be added and deleted at any time according to actual conditions, the existing service is not influenced, the deployment flexibility is realized, the service stability is ensured, and the user experience is improved.
All the embodiments can be applied to the fields of Internet live broadcast, video monitoring or video conference and the like.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
In this embodiment, a scheduling system of an audio/video code stream is further provided, and the system is used to implement the foregoing embodiments and preferred embodiments, and details are not described again after having been described. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware or a combination of software and hardware are also possible and contemplated.
Fig. 7 is a schematic structural diagram of a scheduling system of an audio/video code stream according to an embodiment of the present invention, as shown in fig. 7, including:
the content scheduling node 72 is used for analyzing received audio and video code streams to obtain key information, and determining channel identifiers of the audio and video code streams according to the key information; and determining a target streaming media service node corresponding to a channel identifier of the audio/video code stream according to the first corresponding relationship, and pushing the audio/video code stream to the target streaming media service node under the condition that the online state of the target streaming media service node is online, wherein the first corresponding relationship between the channel identifier and the streaming media service node 74 is stored in the content scheduling node 72.
By the scheme, the key information is analyzed and obtained from the received audio and video code stream, the channel identification of the audio and video code stream is determined according to the key information, determining a target streaming media service node corresponding to the channel identifier of the audio/video code stream according to the first corresponding relation, wherein, the content scheduling node stores a first corresponding relation between a channel identifier and a streaming media service node, under the condition that the online state of the target streaming media service node is online, the audio and video code stream is pushed to the target streaming media service node, and the content scheduling node can schedule the streaming media service node according to the key information of the audio and video code stream and the online condition of the streaming media service node, automatically selecting a proper streaming media service node to forward and serve the audio and video code stream, under the condition of reducing the dependence on manual management, the intelligent scheduling of the audio and video code stream is realized.
Optionally, the content scheduling node is further configured to obtain a device identifier of the target streaming media service node; and acquiring the online state of the equipment corresponding to the equipment identifier of the target streaming media service node according to the second corresponding relation, and taking the online state of the equipment as the online state of the target streaming media service node, wherein the second corresponding relation between the equipment identifier and the online state of the equipment is stored in the content scheduling node.
Wherein the presence status includes at least one of: online, not online.
Optionally, the content scheduling node is further configured to obtain an incoming flow and an outgoing flow of each online streaming media service node when a target streaming media service node corresponding to a channel identifier of the audio/video code stream is not determined according to the first corresponding relationship, or when an online state of the target streaming media service node is determined to be offline according to the second corresponding relationship; and determining the streaming media service nodes to be pushed by the audio and video code stream according to the incoming flow and the outgoing flow of each streaming media service node.
Optionally, the content scheduling node is further configured to determine an ingress traffic minimum value and an egress traffic minimum value from each streaming media service node; determining the streaming media service node corresponding to the minimum value of the outlet flow as a streaming media service node to be pushed by the audio and video code stream under the condition that the weight of the inlet flow is smaller than the weight of the outlet flow; and under the condition that the weight of the inlet flow is greater than that of the outlet flow, determining the streaming media service node corresponding to the minimum value of the inlet flow as the streaming media service node to be pushed by the audio and video code stream.
Optionally, the content scheduling node is further configured to determine an event type of the audio/video code stream; under the condition that the event indicating the acquisition of the audio and video code stream is a starting event, determining a target streaming media service node corresponding to a channel identifier of the audio and video code stream according to a first corresponding relation; and deleting the channel identifier of the audio and video code stream from the first corresponding relation under the condition that the event type indicates that the event for acquiring the audio and video code stream is an end event.
Optionally, when the number of the content scheduling nodes is multiple, any one of the content scheduling nodes is configured to determine a first corresponding relationship after the channel adding operation or the channel deleting operation is performed, and obtain a third corresponding relationship, when the channel adding operation or the channel deleting operation is received; and synchronizing the third correspondence to other content scheduling nodes, wherein the other content scheduling nodes are other nodes except the any content scheduling node in the plurality of content scheduling nodes.
Optionally, the content scheduling node is further configured to determine a protocol type of the audio/video code stream; and analyzing the audio and video code stream according to the protocol type to obtain the key information.
By the invention, the key information is analyzed and obtained from the received audio and video code stream, the channel identification of the audio and video code stream is determined according to the key information, determining a target streaming media service node corresponding to the channel identifier of the audio/video code stream according to the first corresponding relation, wherein, the content scheduling node stores a first corresponding relation between a channel identifier and a streaming media service node, under the condition that the online state of the target streaming media service node is online, the audio and video code stream is pushed to the target streaming media service node, and the content scheduling node can schedule the streaming media service node according to the key information of the audio and video code stream and the online condition of the streaming media service node, automatically selecting a proper streaming media service node to forward and serve the audio and video code stream, under the condition of reducing the dependence on manual management, the intelligent scheduling of the audio and video code stream is realized.
In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary embodiments, and details of this embodiment are not repeated herein.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
and S1, analyzing the received audio and video code stream to obtain key information, and determining the channel identification of the audio and video code stream according to the key information.
And S2, determining a target streaming media service node corresponding to the channel identifier of the audio/video code stream according to the first corresponding relationship, wherein the first corresponding relationship between the channel identifier and the streaming media service node is stored in the content scheduling node.
And S3, under the condition that the online state of the target streaming media service node is online, pushing the audio and video code stream to the target streaming media service node.
In an exemplary embodiment, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary embodiments, and details of this embodiment are not repeated herein.
It will be apparent to those skilled in the art that the various modules or steps of the invention described above may be implemented using a general purpose computing device, they may be centralized on a single computing device or distributed across a network of computing devices, and they may be implemented using program code executable by the computing devices, such that they may be stored in a memory device and executed by the computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into various integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A scheduling method of audio and video code streams is characterized in that the method is applied to a content scheduling node and comprises the following steps:
analyzing received audio and video code streams to obtain key information, and determining channel identifiers of the audio and video code streams according to the key information;
determining a target streaming media service node corresponding to a channel identifier of the audio/video code stream according to a first corresponding relation, wherein the first corresponding relation between the channel identifier and the streaming media service node is stored in the content scheduling node;
and under the condition that the online state of the target streaming media service node is online, pushing the audio and video code stream to the target streaming media service node.
2. The method for scheduling audio/video code streams according to claim 1, wherein the step of judging the online status of the target streaming media service node comprises:
acquiring the equipment identifier of the target streaming media service node;
and acquiring the online state of the equipment corresponding to the equipment identifier of the target streaming media service node according to the second corresponding relation, and taking the online state of the equipment as the online state of the target streaming media service node, wherein the second corresponding relation between the equipment identifier and the online state of the equipment is stored in the content scheduling node.
3. The method for scheduling an audio-video code stream according to claim 2, further comprising:
acquiring the incoming flow and the outgoing flow of each online streaming media service node under the condition that a target streaming media service node corresponding to a channel identifier of the audio and video code stream is not determined according to the first corresponding relation or the online state of the target streaming media service node is determined to be offline according to the second corresponding relation;
and determining the streaming media service nodes to be pushed by the audio and video code stream according to the incoming flow and the outgoing flow of each streaming media service node.
4. The method for scheduling audio/video code streams according to claim 3, wherein determining the streaming media service node to be pushed by the audio/video code stream according to the ingress flow and the egress flow of each streaming media service node comprises:
determining an inlet flow minimum value and an outlet flow minimum value from each streaming media service node;
determining the streaming media service node corresponding to the minimum value of the outlet flow as a streaming media service node to be pushed by the audio and video code stream under the condition that the weight of the inlet flow is smaller than the weight of the outlet flow;
and under the condition that the weight of the inlet flow is greater than that of the outlet flow, determining the streaming media service node corresponding to the minimum value of the inlet flow as the streaming media service node to be pushed by the audio and video code stream.
5. The method for scheduling audio/video code streams according to claim 1, further comprising:
determining the event type of the audio and video code stream;
under the condition that the event indicating the acquisition of the audio and video code stream is a starting event, determining a target streaming media service node corresponding to a channel identifier of the audio and video code stream according to a first corresponding relation;
and deleting the channel identifier of the audio and video code stream from the first corresponding relation under the condition that the event type indicates that the event for acquiring the audio and video code stream is an end event.
6. The method for scheduling audio/video code streams according to claim 1, wherein when there are a plurality of content scheduling nodes, the method further comprises:
determining a first corresponding relation after the channel adding operation or the channel deleting operation is executed under the condition that any one of the content scheduling nodes receives the channel adding operation or the channel deleting operation, and obtaining a third corresponding relation;
and synchronizing the third corresponding relation to other content scheduling nodes, wherein the other content scheduling nodes are other nodes except the any content scheduling node in the plurality of content scheduling nodes.
7. The method for scheduling audio/video code streams according to claim 1, wherein key information is obtained by parsing the received audio/video code streams, and the method comprises:
determining the protocol type of the audio and video code stream;
and analyzing the audio and video code stream according to the protocol type to obtain the key information.
8. A scheduling system of audio and video code streams is characterized by comprising:
a content scheduling node, a plurality of streaming media service nodes connected with the content scheduling node, wherein,
the content scheduling node is used for analyzing the received audio and video code stream to obtain key information and determining a channel identifier of the audio and video code stream according to the key information; and determining a target streaming media service node corresponding to a channel identifier of the audio and video code stream according to the first corresponding relation, and pushing the audio and video code stream to the target streaming media service node under the condition that the online state of the target streaming media service node is online, wherein the first corresponding relation between the channel identifier and the streaming media service node is stored in the content scheduling node.
9. The system for scheduling an audio/video code stream according to claim 8, wherein the content scheduling node is further configured to obtain a device identifier of the target streaming media service node; and acquiring the online state of the equipment corresponding to the equipment identifier of the target streaming media service node according to the second corresponding relation, and taking the online state of the equipment as the online state of the target streaming media service node, wherein the second corresponding relation between the equipment identifier and the online state of the equipment is stored in the content scheduling node.
10. The system for scheduling audio/video code streams according to claim 8, wherein the content scheduling node is further configured to obtain an ingress traffic and an egress traffic of each online streaming media service node when a target streaming media service node corresponding to a channel identifier of the audio/video code stream is not determined according to the first corresponding relationship or when an online state of the target streaming media service node is determined to be offline according to the second corresponding relationship; and determining the streaming media service nodes to be pushed by the audio and video code stream according to the incoming flow and the outgoing flow of each streaming media service node.
11. The system for scheduling audio/video codestreams according to claim 10, wherein the content scheduling node is further configured to determine a minimum value of an ingress flow and a minimum value of an egress flow from the respective streaming media service nodes; determining the streaming media service node corresponding to the minimum value of the outlet flow as a streaming media service node to be pushed by the audio and video code stream under the condition that the weight of the inlet flow is smaller than the weight of the outlet flow; and under the condition that the weight of the inlet flow is greater than that of the outlet flow, determining the streaming media service node corresponding to the minimum value of the inlet flow as the streaming media service node to be pushed by the audio and video code stream.
12. The system for scheduling an audio/video stream according to claim 8, wherein the content scheduling node is further configured to determine an event type of the audio/video stream; under the condition that the event indicating the acquisition of the audio and video code stream is a starting event, determining a target streaming media service node corresponding to a channel identifier of the audio and video code stream according to a first corresponding relation; and deleting the channel identifier of the audio and video code stream from the first corresponding relation under the condition that the event type indicates that the event for acquiring the audio and video code stream is an end event.
13. The system for scheduling audio/video code streams according to claim 8, wherein, in the case that there are a plurality of the content scheduling nodes, any one of the plurality of content scheduling nodes is configured to determine a first corresponding relationship after execution of a channel adding operation or a channel deleting operation to obtain a third corresponding relationship in the case that a channel adding operation or a channel deleting operation is received; and synchronizing the third correspondence to other content scheduling nodes, wherein the other content scheduling nodes are other nodes except the any content scheduling node in the plurality of content scheduling nodes.
14. The system for scheduling an audio/video stream according to claim 8, wherein the content scheduling node is further configured to determine a protocol type of the audio/video stream; and analyzing the audio and video code stream according to the protocol type to obtain the key information.
15. A computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to carry out the method of any one of claims 1 to 7 when executed.
16. An electronic device, comprising a memory having a computer program stored therein and a processor arranged to perform the method of any of claims 1 to 7 by the computer program.
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| CN202111204424.6A CN114222086B (en) | 2021-10-15 | 2021-10-15 | Method, system, medium and electronic device for scheduling audio and video code stream |
| PCT/CN2022/114618 WO2023061060A1 (en) | 2021-10-15 | 2022-08-24 | Audio and video code stream scheduling method, system, medium and electronic apparatus |
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