CN112751886B - Transcoding method, transcoding system, transmission equipment and storage medium - Google Patents

Transcoding method, transcoding system, transmission equipment and storage medium Download PDF

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CN112751886B
CN112751886B CN201911038570.9A CN201911038570A CN112751886B CN 112751886 B CN112751886 B CN 112751886B CN 201911038570 A CN201911038570 A CN 201911038570A CN 112751886 B CN112751886 B CN 112751886B
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transcoding
edge server
data
request
server
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CN112751886A (en
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陈明生
刘竞超
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Guizhou Baishancloud Technology Co Ltd
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Guizhou Baishancloud Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/60Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/63Routing a service request depending on the request content or context
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/45Network directories; Name-to-address mapping
    • H04L61/4505Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream

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  • Computer Networks & Wireless Communication (AREA)
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  • Information Transfer Between Computers (AREA)

Abstract

The invention discloses a transcoding method, a transcoding system, a transmission device and a storage medium, wherein the transcoding method comprises the following steps: receiving a transcoding request for transcoding data; determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates the transcoding request and transcoding information of at least one transcoding unit deployed on at least one edge server; the transcoding request is sent to the transcoding unit deployed on the transcoding edge server, so that the load of the transcoding center server can be effectively reduced, the resources of the edge forwarding server are fully utilized to execute transcoding operation, the utilization rate of the transcoding edge server is improved, the overall utilization rate of the server in the CDN system is further improved, the service cost is reduced, the time delay is reduced, and the use experience of a user is improved.

Description

Transcoding method, transcoding system, transmission equipment and storage medium
Technical Field
The present invention relates to the field of internet technologies, and in particular, to a transcoding method, a transcoding system, a transmission device, and a storage medium.
Background
With the continuous expansion of CDN services, the number of clients served is continuously increased, and different clients have different requirements on resolution and code rate of video, audio and other contents according to different running services. When the resolution and the code rate of the content such as the audio and the video provided by the server are different from the requirements of the clients, or the resolution and the code rate of the content such as the audio and the video uploaded to the server by the clients are different from the specifications which can be cached by the server, in order to provide better services for the clients, the data such as the audio and the video cached in the server can be ensured to be safely and reliably stored, and the data such as the audio and the video are required to be transcoded.
Typically, the transcoding process may be actively initiated by the user; the transcoding rule can be preset according to the requirement of the client, when the client sends a resource request to the server, the transcoding system selects a proper transcoding unit to transcode the video and audio resources requested by the client according to the transcoding rule, and the transcoded video and audio are sent to the client.
In the prior art, in order to avoid the influence of the pull link and the push link on the transcoding process, the transcoding unit is generally deployed on the source server, and the resources of the source server are required to be occupied for operation. The source server is used as the core of the CDN, and needs to provide a stable and reliable service to the outside, so that the number of transcoding units capable of being deployed on the source server for performing transcoding service is limited, otherwise, a large amount of resources of the source server are occupied, so that the operation load of the source server is high, and the working reliability and stability of the source server are seriously affected.
Meanwhile, as a large number of edge servers are deployed in the CDN, most of the edge servers have low loads, and the overall utilization rate is not high, so that great resource waste is caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides a transcoding method, a transcoding system, a transcoding transmission device and a storage medium.
The transcoding method provided by the invention comprises the following steps:
receiving a transcoding request for transcoding data;
determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates the transcoding request and transcoding information of at least one transcoding unit deployed on at least one edge server;
and sending the transcoding request to a transcoding unit deployed on the transcoding edge server.
The transcoding method also has the following characteristics: the transcoding unit deployed on the transcoding edge server acquires data from the transcoding edge server and transcodes the data;
and the transcoding unit sends the transcoded data which is transcoded to a server connected with the transcoding edge server.
The transcoding method also has the following characteristics: the domain name configuration of the transcoding request terminal comprises the domain name of the transcoding request terminal, and the data code rate, the data resolution and/or the data format of the transcoding request terminal.
The transcoding method also has the following characteristics: the transcoding information of the transcoding unit comprises the load status of the transcoding unit.
The transcoding method also has the following characteristics: the determining the transcoding edge server for transcoding according to the domain name configuration of the transcoding request end initiating the transcoding request and the transcoding information of at least one transcoding unit deployed on at least one edge server comprises:
and determining an edge server corresponding to a transcoding unit with a load state smaller than a preset value and closest to the transcoding request end from all transcoding units as a transcoding edge server according to the domain name of the transcoding request end which initiates the transcoding request, the data code rate, the data resolution and/or the data format of the transcoding request end which requests transcoding, and the load state of each transcoding unit.
The invention provides a transcoding system, which comprises a transcoding center server, and further comprises at least one transcoding unit deployed on at least one edge server, wherein the transcoding center server comprises:
the receiving module is used for receiving a transcoding request for transcoding the data;
the central decision module is used for determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates the transcoding request and transcoding information of at least one transcoding unit deployed on at least one edge server;
and the sending module is used for sending the transcoding request to a transcoding unit deployed on the transcoding edge server.
The transcoding system also has the following characteristics: the transcoding unit comprises:
an acquisition subunit, configured to acquire data from the transcoding edge server;
a transcoding subunit, configured to transcode the data;
and the transmitting subunit is used for transmitting the transcoded data which is transcoded to a server connected with the transcoding edge server.
The transcoding system also has the following characteristics: the central decision module is used for determining the domain name of the transcoding request end, and the data code rate, the data resolution and/or the data format of the transcoding request end for transcoding.
The transcoding system also has the following characteristics: the central decision module is also used for determining the load state of the transcoding unit.
The transcoding system also has the following characteristics: the central decision module is further configured to determine, from all the transcoding units, an edge server corresponding to a transcoding unit whose load status is less than a preset value and closest to the transcoding request end, as a transcoding edge server, according to a domain name of the transcoding request end that initiates the transcoding request, a data rate, a data resolution, and/or a data format of the transcoding request end that requests transcoding, and a load status of each of the transcoding units.
The transmission device provided by the invention comprises: a transceiver, a memory, a processor;
the transceiver is used for receiving and transmitting messages;
the memory is used for storing instructions and data;
the processor is configured to read the instructions and data stored in the memory to perform the transcoding method as described above.
The present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements a transcoding method as described above.
The transcoding method and the transcoding system can effectively reduce the load of the transcoding center server, fully utilize the resources of the edge forwarding server to execute transcoding operation, improve the utilization rate of the transcoding edge server, further improve the overall utilization rate of the server in the CDN system, reduce the service cost, reduce the time delay and improve the use experience of users.
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 specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a transcoding method in an embodiment;
FIG. 2 is a connection block diagram of a transcoding system in an embodiment;
FIG. 3 is one of the flowcharts of an implementation of the transcoding method in an embodiment;
fig. 4 is a second flowchart of an implementation of the transcoding method in an embodiment.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
The application provides a transcoding method and a forwarding system, wherein in the process of transcoding data, a transcoding center server does not execute specific transcoding operation, a transcoding edge server for executing the transcoding operation is determined according to a transcoding request, and the transcoding request is sent to the transcoding edge server to execute the specific transcoding operation, so that the load of the transcoding center server is reduced, the resources of the transcoding edge server are fully utilized, the transcoding speed is improved, the time delay is reduced, and the use experience of a user is improved.
In order to clearly explain the transcoding method and the transcoding system in detail, various servers, execution units and functions thereof mentioned in the present invention are explained.
And the edge server is used for being directly connected with the client or the client source station. The edge servers are deployed all over the country, when a client or a client source station initiates a request, the edge servers which are 'nearest' to the client or the client source station are scheduled according to domain name resolution of the request, are used for accelerating in the last kilometer, the problem that the client or the client source station fails in the request due to the conditions of cross-operator, cross-region access and the like is avoided, and powerful guarantee is provided for dynamic acceleration service.
The transcoding edge server is formed by arranging a transcoding unit on the edge server, namely the edge server capable of transcoding according to a transcoding request.
And the forwarding server is directly connected with the edge server or the source server and is used for forwarding data flow between the edge server and the source server when the distance between the edge server and the source server is far.
The parent server is directly connected with the edge server or the client source station and is deployed in a part of important areas of the whole country.
The source server is connected with the edge server or the father server and is deployed in a part of important areas of the whole country.
The transcoding center server is deployed in the bgp machine room, interacts with the transcoding unit and the client and is used for storing information of the transcoding unit arranged on the transcoding edge server and deciding that the transcoding edge server with the optimal distance serves the client. Because the transcoding center server is arranged in the bgp machine room, no matter which network is used by the client to communicate, the transcoding center server can receive the transcoding request sent by the client, and the service reliability is improved.
The transcoding unit is arranged on the transcoding edge server, interacts with the transcoding center server to report transcoding information, interacts with the transcoding edge server, the father server and the source server, and is used for transcoding and forwarding transcoded data after transcoding outwards.
As shown in fig. 1, the transcoding method provided by the present invention includes:
s1, receiving a transcoding request for transcoding data;
s2, determining a transcoding edge server for transcoding according to domain name configuration of a transcoding request end which initiates the transcoding request and transcoding information of at least one transcoding unit deployed on at least one edge server;
in S2, a special case is included in which at least one transcoding unit is provided on one edge server, that is, only one edge server has a transcoding unit throughout the CDN network, performing the transcoding task. Therefore, the transcoding task executed by the transcoding center server in the prior art is delivered to the edge server for execution, the load of the transcoding center server is reduced, the resources of the transcoding edge server are fully utilized, the transcoding speed is improved, and the time delay is reduced. Of course, it can be understood that only one edge server of the plurality of edge servers is selected as a special case of transcoding edge servers, and in a preferred embodiment, the plurality of transcoding units are respectively disposed on the plurality of edge servers, that is, in an optimal manner, one transcoding unit is disposed on each edge server, so that the resources of each edge server used as the transcoding edge server are fully utilized, the transcoding speed is improved more effectively, and the time delay is reduced.
S3, sending the transcoding request to a transcoding unit deployed on the transcoding edge server;
s4, a transcoding unit deployed on the transcoding edge server acquires data from the transcoding edge server and transcodes the data;
s5, the transcoding unit sends the transcoded data which is transcoded to a server connected with the transcoding edge server.
In the transcoding method, the execution bodies of S1 to S3 are transcoding center servers, and the execution bodies of S4 and S5 are transcoding edge servers. When the method is implemented, the transcoding center server does not execute specific transcoding operation, only receives the transcoding request and performs scheduling, determines the most suitable transcoding edge server through identification, analysis and equalization technology, sends the transcoding request to the transcoding edge server, and executes specific transcoding operation by a transcoding unit on the transcoding edge server. The transcoding center server bears more scheduling and analysis work in the CDN network, and the resource occupation amount is large, if the transcoding center server continues to bear all the transcoding work in the CDN network, the transcoding center server is overloaded, and the transcoding efficiency is affected. According to the invention, the transcoding units are arranged on the edge servers, so that the specific transcoding operation is executed by the transcoding units on the edge servers, and as the number of the edge servers in the CDN is large, the load of each edge server is relatively small, the task of executing the transcoding operation is distributed to the transcoding edge servers, the resources of the edge servers are effectively utilized, and the resource utilization rate of the servers is improved.
When the transcoding edge server is set, the transcoding unit can be set according to the position of the transcoding request end, namely, the position of the client or the client source station with the transcoding requirement, and the transcoding unit is set on the edge server near the client or the client source station to form the transcoding edge server. And at the position without transcoding requirement, the edge server is not provided with a transcoding unit, so that the resources of the edge server are saved for serving other functions. In some special cases, a transcoding unit may be set on each edge server, that is, each edge server in the CDN network is a transcoding edge server, and the transcoding unit on each transcoding edge server can perform a transcoding operation by using the resources of the edge server.
Preferably, the domain name configuration of the transcoding request end comprises the domain name of the transcoding request end, and the data rate, the data resolution and/or the data format of the transcoding request end for transcoding. The transcoding center server directly obtains the IP address of the requesting end from the request, and further determines one or more transcoding edge servers nearest or nearer to the transcoding requesting end for use in performing transcoding operations. The data codes, the data resolutions and/or the data formats of the transcoding request end request for transcoding are finally determined by the transcoding request end, the data codes, the data resolutions and/or the data root types required by different clients or client source stations are different, and the information parameters are contained in the transcoding request, so that the transcoding unit transcodes the data according to the requirements of the clients or the client source stations.
Preferably, the transcoding information of the transcoding unit comprises a load status of the transcoding unit. When determining the optimal transcoding edge server, the transcoding center server needs to consider the load state of the transcoding edge server, and when the load of a certain transcoding edge server is higher, even if the transcoding edge server is closest to the transcoding request end, the transcoding unit on the transcoding edge server cannot be selected to execute transcoding operation, so that the influence on the service effects of the client and the client source station due to overlong transcoding time caused by higher load is avoided. Therefore, when the transcoding center server performs scheduling, a transcoding edge server with a lower load and a closer distance is selected from a plurality of transcoding edge servers with a closer distance to the transcoding request end as an optimal selection to perform transcoding operation. Here, it should be noted that, since the transcoding unit is deployed on the edge server and performs the transcoding operation by using the bandwidth resource and the computing resource of the edge server, the essence of selecting the transcoding edge server to perform the transcoding operation is to select the transcoding unit that is deployed and runs on the transcoding edge server to perform the transcoding operation.
In order to select the most suitable transcoding operation from the plurality of transcoding edge servers, the transcoding method according to the present invention further comprises:
and determining an edge server corresponding to a transcoding unit with a load state smaller than a preset value and closest to the transcoding request end from all transcoding units as a transcoding edge server according to the domain name of the transcoding request end which initiates the transcoding request, the data code rate, the data resolution and/or the data format of the transcoding request end which requests transcoding, and the load state of each transcoding unit.
The specific numerical value of the preset value is not limited in the application, and a person skilled in the art can set the preset value according to the deployment condition of the CDN network, so long as the transcoding operation can be ensured to be executed smoothly. According to the transcoding method provided by the invention, the domain name of the transcoding request end, the data code rate, the data resolution and/or the data format of the transcoding request end for transcoding and the load state of each transcoding unit are comprehensively considered, the edge server corresponding to the optimal transcoding unit is finally determined to serve as the transcoding edge server, the transcoding units deployed on the transcoding edge server utilize the resources of the transcoding edge server to transcode the data needing to be transcoded, the load of the transcoding center server can be reduced while the transcoding effect and the transcoding speed are ensured, the load of the transcoding edge server is effectively utilized, and the resource overall utilization of the CDN is realized.
In addition, it should be noted that, when determining the transcoding edge server for performing the transcoding operation, the selection is performed according to the domain name configuration of the transcoding request end, and the selection is performed according to the transcoding information of the transcoding unit in partial sequence. That is, a transcoding unit capable of performing transcoding may be selected according to a load state of the transcoding unit, and then, from among the transcoding units capable of performing transcoding operations, a transcoding edge server corresponding to the optimal transcoding unit may be selected according to a domain name configuration of a transcoding request terminal to perform transcoding operations; or firstly selecting a transcoding unit capable of executing transcoding operation according to the domain name configuration of the transcoding request end, and then selecting the optimal transcoding edge server corresponding to the transcoding unit from the transcoding units capable of executing transcoding operation according to the load state of the transcoding unit to execute transcoding operation.
As shown in fig. 2, the present invention further provides a transcoding system, including a transcoding center server, and a plurality of transcoding units respectively disposed on a plurality of edge servers. Wherein the transcoding center server comprises:
the receiving module is used for receiving a transcoding request for transcoding the data;
the central decision module is used for determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates the transcoding request and transcoding information of at least one transcoding unit deployed on at least one edge server; preferably, the method is used for determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates a transcoding request and transcoding information of each transcoding unit respectively deployed on a plurality of edge servers;
the central decision module is also used for determining the domain name of the transcoding request end, and the data code rate, the data resolution and/or the data format of the transcoding request end for transcoding; and is also used for determining the load state of the transcoding unit;
in a specific implementation process, in order to ensure that an optimal transcoding edge server can be rapidly and accurately determined, the central decision module is further configured to determine, as the transcoding edge server, an edge server corresponding to a transcoding unit, of which the load state is less than a preset value and closest to the transcoding request end, from all the transcoding units according to a domain name of the transcoding request end which initiates the transcoding request, a data rate, a data resolution and/or a data format of the transcoding request end which requests transcoding, and a load state of each transcoding unit;
and the sending module is used for sending the transcoding request to a transcoding unit deployed on the transcoding edge server.
The transcoding unit comprises:
an acquisition subunit, configured to acquire data from the transcoding edge server;
a transcoding subunit, configured to transcode the data;
and the transmitting subunit is used for transmitting the transcoded data which is transcoded to a server connected with the transcoding edge server.
The server connected with the transcoding edge server may be an edge server or a forwarding server, and the connection means that the server is "nearby" and connected in the implementation process, that is, the sending subunit is configured to send the transcoded data that completes transcoding to the forwarding server or the edge server that is located near the transcoding edge server and can perform information interaction with the transcoding edge server. The transcoding unit is provided on the transcoding edge server, which may be understood as a part of the transcoding edge server, and the transcoding process of the transcoding unit may be understood as a process running on the transcoding edge server. In addition, the transcoding method can transcode data according to the transcoding request of the client and the client source station no matter in the process of pushing or pulling the client or the client source station.
The transcoding method and transcoding system of the present invention will be described in detail with reference to a specific embodiment.
As shown in fig. 3, the CDN network includes an origin server, a parent server a, a parent server B, a push server, a transcoding edge server a, a transcoding edge server B, an edge server a, an edge server B, userA, userB, and a transcoding center server. The source server performs information interaction with the parent server A and the parent server B respectively, the parent server A performs information interaction with the edge server A, and the parent server B performs information interaction with the edge server B.
UserA pushes to the edge server A, and because UserA has a transcoding requirement, the pushed data needs to be transcoded. UserA or edge server A sends a transcoding request to a transcoding center server, and the transcoding request is used for transcoding data pushed to the edge server A. The transcoding center server determines a transcoding edge server A and a transcoding edge server B which can be used for executing transcoding operation according to the domain name of the UserA and the data code rate, the data resolution and/or the data format of the transcoding request end for requesting transcoding. Further, the transcoding center server determines that the load state of the transcoding edge server B is lower according to the load states of the transcoding edge server a and the transcoding edge server B, so that the transcoding operation can be performed more quickly and efficiently, and therefore, the transcoding center server determines that the transcoding edge server B is the optimal transcoding edge server for performing the transcoding operation. The transcoding center server sends a transcoding request to the transcoding edge server B. The transcoding edge server B receives the transcoding request, transcodes the data according to the transcoding request, and transmits the transcoded data which is transcoded to a transcoding server connected with the transcoding center server while the transcoding center server performs information interaction, and the transcoding server transmits the transcoded data to a source server connected with the transcoding center server. When UserB pulls from edge server B, edge server B pulls from its connected parent server B, and parent server B pulls from its connected source server, to ensure that UserB can obtain transcoded data stream which is transcoded and suitable for its use.
The transcoding method and the transcoding system according to the present invention will be described in detail with reference to another specific embodiment.
As shown in fig. 4, the CDN network includes an origin server, a parent server a, a parent server B, a transcoding edge server a, a transcoding edge server B, an edge server a, an edge server B, an edge server C, userA, userB, and a transcoding center server. The source server performs information interaction with the father server A and the father server B respectively, the father server A performs information interaction with the edge server A, the father server B performs information interaction with the edge server B, and the transcoding center server performs information interaction with the transcoding edge server A and the transcoding edge server B.
UserA pushes to the edge server A, and because UserA has a transcoding requirement, the pushed data needs to be transcoded. UserA or edge server A sends a transcoding request to a transcoding center server, and the transcoding request is used for transcoding data pushed to the edge server A. The transcoding center server determines a transcoding edge server A and a transcoding edge server B which can be used for executing transcoding operation according to the domain name of the UserA and the data code rate, the data resolution and/or the data format of the transcoding request end for requesting transcoding. Further, the transcoding center server determines that the load state of the transcoding edge server B is lower according to the load states of the transcoding edge server a and the transcoding edge server B, so that the transcoding operation can be performed more quickly and efficiently, and therefore, the transcoding center server determines that the transcoding edge server B is the optimal transcoding edge server for performing the transcoding operation. The transcoding center server sends a transcoding request to the transcoding edge server B. The transcoding edge server B receives the transcoding request, transcodes the data according to the transcoding request, and when the transcoding center server performs information interaction, streams from the edge server A and transcodes the transcoded data, and then pushes the transcoded data to the edge server C connected with the transcoded data. When UserB pulls directly from edge server C, to ensure that UserB can obtain the transcoded data stream that is transcoded and suitable for its use.
In addition, the invention also provides a transmission device, which comprises: a transceiver, a memory, a processor. The transceiver is used for receiving and transmitting the message; the memory is used for storing instructions and data; the processor is used for reading the instructions and data stored in the memory to perform the transcoding method.
Meanwhile, the invention also provides a computer readable storage medium, and a computer program is stored on the computer readable storage medium, and the program is executed by a processor to realize the transcoding method.
The above description may be implemented alone or in various combinations and these modifications are within the scope of the present invention.
Those of ordinary skill in the art will appreciate that all or a portion of the steps of the methods described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium such as a read-only memory, a magnetic or optical disk, etc. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits, and accordingly, each module/unit in the above embodiments may be implemented in hardware or may be implemented in a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional identical elements in an article or apparatus that comprises the element.
The above embodiments are only for illustrating the technical scheme of the present invention, not for limiting the same, and the present invention is described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the present invention is intended to be covered by the scope of the appended claims.

Claims (10)

1. A transcoding method, the method being applied to a transcoding center server in a content distribution network, comprising:
receiving a transcoding request for transcoding data initiated by a first edge server, wherein the transcoding request comprises domain name configuration corresponding to the data;
determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates the transcoding request and transcoding information of at least one transcoding unit deployed on at least one transcoding edge server;
transmitting a second transcoding request to a transcoding unit deployed on the transcoding edge server;
so that a transcoding unit deployed on the transcoding edge server obtains data from the first edge server and transcodes the data;
the transcoding unit sends transcoded data which is transcoded to a second edge server connected with the transcoded edge server, wherein the second edge server is an edge server which receives a data acquisition request, and the data acquisition request is used for requesting the transcoded data after transcoding.
2. The transcoding method of claim 1, wherein the domain name configuration of the transcoding requester includes a domain name of the transcoding requester, and a data rate, a data resolution, and/or a data format of the transcoding requester requesting transcoding.
3. The transcoding method of claim 2, wherein the transcoding information of the transcoding unit comprises a load status of the transcoding unit.
4. The transcoding method of claim 3, wherein said determining a transcoding edge server for transcoding based on a domain name configuration of a transcoding requester from which said transcoding request originates and transcoding information of at least one transcoding unit deployed on at least one edge server comprises:
and determining an edge server corresponding to a transcoding unit with a load state smaller than a preset value and closest to the transcoding request end from all transcoding units as a transcoding edge server according to the domain name of the transcoding request end which initiates the transcoding request, the data code rate, the data resolution and/or the data format of the transcoding request end which requests transcoding, and the load state of each transcoding unit.
5. A transcoding system comprising a transcoding center server in a content distribution network, the transcoding system further comprising at least one transcoding unit deployed on at least one edge server, the transcoding center server comprising:
the receiving module is used for receiving a transcoding request for transcoding data initiated by the first edge server, wherein the transcoding request comprises domain name configuration corresponding to the data;
the central decision module is used for determining a transcoding edge server for transcoding according to the domain name configuration of a transcoding request end which initiates the transcoding request and the transcoding information of at least one transcoding unit deployed on at least one transcoding edge server;
the sending module is used for sending a second transcoding request to a transcoding unit deployed on the transcoding edge server;
an acquisition subunit, configured to acquire data from the first edge server;
a transcoding subunit, configured to transcode the data;
and the transmitting subunit is used for transmitting the transcoded data which is transcoded to a second edge server connected with the transcoded edge server, wherein the second edge server is an edge server for receiving a data acquisition request, and the data acquisition request is used for requesting the transcoded data after transcoding.
6. The transcoding system of claim 5, wherein the central decision module is configured to determine a domain name of the transcoding requester and a data rate, a data resolution, and/or a data format of the transcoding requester requesting transcoding.
7. The transcoding system of claim 6, wherein the central decision module is further for determining a load status of the transcoding unit.
8. The transcoding system of claim 7, wherein the central decision module is further configured to determine, from all the transcoding units, an edge server corresponding to a transcoding unit having a load status less than a preset value and closest to the transcoding request end, as a transcoding edge server, according to a domain name of the transcoding request end that originated the transcoding request, and a data rate, a data resolution, and/or a data format of the transcoding request end that requests transcoding, and a load status of each of the transcoding units.
9. A transmission apparatus, characterized in that the transmission apparatus comprises: a transceiver, a memory, a processor;
the transceiver is used for receiving and transmitting messages;
the memory is used for storing instructions and data;
the processor is configured to read instructions and data stored in the memory to perform the transcoding method of any of claims 1 to 4.
10. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor implements the transcoding method of any of claims 1 to 4.
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