CN101917385A - Dispatch server and distributed system for multimedia trans-coding - Google Patents
Dispatch server and distributed system for multimedia trans-coding Download PDFInfo
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Abstract
The invention discloses a distributed system for multimedia trans-coding, which comprises a user terminal, trans-coding servers and a dispatch server, wherein each trans-coding server consists of an active feedback module for feeding back operation state information thereof to the dispatch server in real time, and a trans-coding processing module for executing the trans-coding processing in a corresponding format according to a trans-coding task distributed by the dispatch server and returning executive results of the trans-coding task to the dispatch server; the dispatch server is composed of a register module for registering information of the trans-coding servers in a system, a user side interface module for receiving a trans-coding task request submitted by the user terminal and transmitting the executive results of the trans-coding task to the user terminal, a configuration module for configuring transmission parameters to the trans-coding task request, and a task distributing module for distributing trans-coding tasks to the corresponding trans-coding servers based on the transmission parameters and the operation state information feedback by the trans-coding server, wherein the transmission parameters include priority parameters. The distributed system can ensure that the distribution of the trans-coding task is more efficient and reasonable, and saves system resources.
Description
Technical field
The present invention relates to the technical field of distributed treatment, particularly relate to dispatching method and a kind of dispatch server of distributed system that a kind of multi-media transcoding uses, distributed system that a kind of multi-media transcoding is used.
Background technology
Digital media content has obtained extensive use in fields such as Digital Television, Web TV and mobile TVs now.But on the encoding and decoding technique of transmission technology and information source, exist the multiple technologies standard.
Because the existence of various various criterions, a large amount of video frequency programs is stored according to different forms and is transmitted.On the terminal of only supporting a kind of video standard, the video frequency program that adopts other standard codes is watched in very difficult realization.In today of network and the continuous fusion of terminal, require video data format to adopt the requirement of different coding standard to become more and more urgent with applied environment is different.The user wishes can collect anywhere or anytime, preserve and send video data, this just requires video data format with the applied environment difference, in the heterogeneous network different terminals, freely change, comprising: the conversion between bit rate conversion, spatial resolution conversion and the different compression standard.Also do not have at present ripe can the supporting to carry out the technology and equipment of freely changing between the different coding standard, influenced the program resource in the distribution of different application scene and shared.
According to the development trend of video format intercommunication, develop a kind of transcoding technology of efficient, high-fidelity and product and realize that same Video service can freely be changed to transmit seem very necessary in heterogeneous network, and be with a wide range of applications.
Summary of the invention
Technical problem to be solved by this invention provides distributed system and the dispatch server that a kind of multi-media transcoding is used, so that the distribution of transcoding task is more efficient, more reasonable, and saves system resource.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses the distributed system that a kind of multi-media transcoding is used, comprising:
User terminal is used to submit to the transcoding task requests, and, receive transcoding task executions result;
Transcoding server comprises:
The active feedback module is used for feeding back its running state information in real time to described dispatch server;
Transcoded processing module is used for carrying out according to the transcoding task of dispatch server distribution the transcoding processing of corresponding format, and returns transcoding task executions result to dispatch server;
Dispatch server comprises:
Registering modules is used for the information of each transcoding server in the Accreditation System;
The user side interface module is used to receive the transcoding task requests, and the result is sent to user terminal with the transcoding task executions;
Configuration module is used for described transcoding task requests configuration transmission parameter is comprised priority parameters in the described transmission parameter;
The task distribution module is used for the running state information according to described transmission parameter and transcoding server feedback, and distribution transcoding task is to corresponding transcoding server.
Preferably, the urgency parameter that described priority parameters is provided with by user in the current transcoding task requests, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, the urgency parameter that the user is provided with in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.
Preferably, the information of described transcoding server is the IP address information; The running state information of described transcoding server comprises the work at present state information and the resource occupation information of transcoding server.
Preferably, described task distribution module further comprises:
Preferential distribution submodule is used for the transcoding task that priority is the highest, and it is free time and the minimum transcoding server of resource occupation that the work at present state is given in scheduling.
Preferably, described task distribution module further comprises:
End the distribution submodule, the work at present state that is used for all transcoding servers in current system is when having much to do, and suspends the scheduling of described transcoding task and handles.
The embodiment of the invention also discloses a kind of dispatch server, be arranged in the distributed system that multi-media transcoding is used, comprise a plurality of transcoding servers and user terminal in the described distributed system, described dispatch server comprises:
Registering modules is used for the information of each transcoding server in the Accreditation System;
The user side interface module is used to receive the transcoding task requests, and the result is sent to user terminal with the transcoding task executions;
Configuration module is used for described transcoding task requests configuration transmission parameter is comprised priority parameters in the described transmission parameter;
The task distribution module is used for the running state information according to described transmission parameter and the real-time feedback of transcoding server, and distribution transcoding task is to corresponding transcoding server.
Preferably, the urgency parameter that described priority parameters is provided with by user in the current transcoding task requests, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, the urgency parameter that the user is provided with in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.
Preferably, the information of described transcoding server is the IP address information; The running state information of described transcoding server comprises the work at present state information and the resource occupation information of transcoding server.
Preferably, described task distribution module further comprises:
Preferential distribution submodule is used for the transcoding task that priority is the highest, and it is free time and the minimum transcoding server of resource occupation that the work at present state is given in scheduling.
Preferably, described task distribution module further comprises:
End the distribution submodule, the work at present state that is used for all transcoding servers in current system is when having much to do, and suspends the scheduling of described transcoding task and handles.
Compared with prior art, the present invention has the following advantages:
The present invention is by the information of each transcoding server in the Accreditation System in dispatch server, dispatch server and each transcoding server can be visited mutually on network, and each transcoding server can feed back its running state information initiatively, in real time to described dispatch server; The transcoding task requests that dispatch server is submitted to for received user terminal, dispose a transmission parameter that comprises priority parameters, when the transcoding task is distributed, dispatch server can be according to the running state information and the distribution of described transmission parameter of current each transcoding server feedback, promptly according to the order of importance and emergency of the task that priority reflected, the task that priority is higher is distributed to the preferable transcoding server of current running status free time and performance in advance, thereby make the distribution of transcoding task more efficient, more reasonable, and effectively saved system resource.
Description of drawings
Fig. 1 is the structure chart of the distributed system used of a kind of multi-media transcoding of the present invention;
Fig. 2 is the schematic diagram of the distributed system internal structure used of a kind of multi-media transcoding of the present invention;
Fig. 3 is the structured flowchart of a kind of dispatch server of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention can be used in numerous general or special purpose computingasystem environment or the configuration.For example: multicomputer system, server, network PC, minicom, mainframe computer, comprise distributed computing environment (DCE) of above any system or equipment or the like.
The present invention can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract, program, object, assembly, data structure or the like.Also can in distributed computing environment (DCE), put into practice the present invention, in these distributed computing environment (DCE), by by communication network connected teleprocessing equipment execute the task.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium that comprises memory device.
Along with the continuous evolution of the Internet and cell phone network, the platform of broadcasting media is more and more, and the media formats of propagating the platform support accordingly is also more and more, and from mobile phone, to IPTV, high-definition digital broadcasting, different platform is different fully to the call format of content.In order to make the media data can be between the heterogeneous network, between different types of access device and transparent exchange between the different-format, the transcoding between the compressing video frequency flow becomes in the digital video the research direction of heat.The compressing video frequency flow transcoding. be exactly the compressing video frequency flow that a kind of compressing video frequency flow of Standards and formats is processed into the another kind of Standards and formats that more is adapted to certain application-specific.Video code conversion is handled end to end to the video code flow of compression. and make the compressed bit stream behind the transcoding more can adapt to the requirement of transmission channel bandwidth and receiving terminal.
Because multi-media transcoding, especially video code conversion are processing procedures very consuming time, that expend computer resource, therefore, adopt Clustering to quicken this process, i.e. distributed system in the present invention.Using the present invention can allow a plurality of transcoding tasks walk abreast in cluster and carry out under dispatching management efficiently, thereby greatly improves the throughput of transcoding.
With reference to figure 1, show the structure chart of the distributed system that a kind of multi-media transcoding of the present invention uses, this system comprises a plurality of user terminals (web terminal) 11 and a plurality of transcoding server 13, dispatch server 12 carries out alternately based on cable network or wireless network and each user terminal 11 and transcoding server 13, carries out the centralized dispatching management of transcoding task.In transcoding process, dispatch server 12 at first can the reception sources user terminal the 11 transcoding task requests of submitting to, and portion's (in internal memory) (adopts certain rule to determine according to priority within it, to describe in detail hereinafter) rank, then by the transcoding server 13 real-time running state information of feeding back, with the transcoding task in the formation based on efficiently, the requirement that rationalizes, be distributed to current optimal transcoding server 13, after transcoding server 13 is carried out concrete video code conversion processing, and returning transcoding task executions result to dispatch server 12, dispatch server then can be distributed to this result corresponding target terminal user 11.
Specifically can be with reference to shown in Figure 2, the schematic diagram of the distributed system internal structure that a kind of multi-media transcoding of the present invention is used, in the present embodiment, this system can comprise following equipment:
User side interface module 232 is used to receive the transcoding task requests, and the result is sent to user terminal with the transcoding task executions;
In a preferred embodiment of the present invention, the urgency parameter that described priority parameters can be provided with by user in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.In the present embodiment promptly, the order of task distribution adopts " time+urgency " two-stage judgment model in the trans-coding system, and in this case, system can set in advance the urgency parameter, as is set to urgent, common, rudimentary.
In a kind of example of concrete application, dispatch server receives the input parameter of transcoding task requests can be with reference to following code:
<Task>
<TaskID></>
<TaskTime></>
<Priority></>
</Task>
Wherein, TaskTime is the time of reception of this task requests, in cluster since the request One's name is legion, so described time of reception preferably be accurate to second, as AM10:21:55.Priority is the setting of urgent in the corresponding system, common or rudimentary three grades of urgency parameters, and Priority and TaskTime have constituted the priority of current task request jointly.Default situations or user do not do under the situation of setting, and Priority is can automatic assignment common, and after dispatch server received task requests, all task requests entered in the task queue of dispatch server, pressed the time of reception rank order.As certain bar task Priority that receives when being urgent, this task comes the first place of task queue automatically and puts; As the Priority of receiving of task when being rudimentary, come the last position of task queue automatically; When the task Priority property value in the formation is all the same, carry out according to the time of reception sequencing of task requests.
In another kind of preferred embodiment of the present invention, described priority parameters can also be by reading the preset level of target terminal user, and the time of reception of current transcoding task requests is determined.In the present embodiment promptly, the order employing of task distribution in the trans-coding system " time+the destination end grade " the two-stage judgment model, in this case, the class parameter of the pre-configured user side of system's meeting, as be set to advanced level user, general user's two-stage.Promptly when the receiving terminal user was advanced level user in certain the bar task requests that receives, this task came the first place of task queue automatically and puts; When the receiving terminal user is the general user, carry out according to the time of reception sequencing of task requests.
In another preferred embodiment of the present invention, described priority parameters can also be by by reading the preset level of target terminal user, the urgency parameter that the user is provided with in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.In the present embodiment promptly, the order of task distribution adopts " time+urgency+destination end grade " three grades of judgment models in the trans-coding system, and in this case, system can set in advance the urgency parameter, as is set to urgent, common, rudimentary; And, the class parameter of configure user end, as be set to advanced level user, general user's two-stage.In specific implementation, can also the preset level and the urgency parameter of described target terminal user further be assigned weight with calculating priority level, as to urgency parameter configuration higher weights, preset level configuration lower grade to described target terminal user, when the urgency parameter of certain task is urgent, but when target terminal user was the general user, put the first place that will this task comes task queue automatically.
Certainly, it all is feasible that those skilled in the art adopt other priority method to set up that is easy to expect, the present invention need not this to be limited.
For dispatch server and each transcoding server can be visited mutually on network, in specific implementation, the information of each transcoding server in the system that registers in dispatch server can be the IP address and the equipment identification information of each transcoding server.Be that each transcoding server all can dispose fixed IP addresses and implementor name in the system, with described IP address, perhaps, IP address and implementor name are registered in the dispatch server, just can realize the communication interconnect of dispatch server and each transcoding server.
High efficiency and rationalization for the transcoding task scheduling, the inventor herein considers to realize from fast reaction two aspects in conjunction with the actual conditions of transcoding server and dispatch server, the actual conditions of transcoding server, specifically can embody by the work at present state information and the resource occupation information of transcoding server, for example, current whether busy still idle, and internal memory, the CPU of transcoding server itself take situation.In embodiments of the present invention, these information by transcoding server initiatively, report to dispatch server in real time.In this case, dispatch server just need be before each task of scheduling, initiate once mutual about its running status with transcoding server again, only need be according to the running state information of transcoding server active feedback, promptly read the information of its storage inside, corresponding distribution transcoding task is just passable, thereby makes dispatch server reach the rapid-action purpose for the scheduling of each task.
In specific implementation, described task distribution module may further include following submodule:
Preferential distribution submodule is used for the transcoding task that priority is the highest, and it is free time and the minimum transcoding server of resource occupation that the work at present state is given in scheduling;
And/or, end the distribution submodule, the work at present state that is used for all transcoding servers in current system is when having much to do, and suspends the scheduling of described transcoding task and handles.
Promptly use present embodiment when distributed tasks, dispatch server can be checked the performance state of all idle transcoding servers earlier, and the server to performance state the best (resource occupation is minimum) is dispatched in then that priority level is the highest priority of task.If all transcoding servers all are in busy condition, then temporarily do not dispatch the transcoding task, there is idle transcoding server to dispatch again by the time.If certain server runs into hardware or software failure, cause task to be blocked, dispatch server can not continue to its distributed tasks yet, handles and other task can be transferred to other transcoding server of handling of having ready conditions, thereby has further improved the treatment effeciency of system.
With reference to figure 3, show the structured flowchart of a kind of dispatch server of the present invention, described dispatch server is arranged in the distributed system that multi-media transcoding is used, and comprises a plurality of transcoding servers and user terminal in the described distributed system, and described dispatch service implement body can comprise with lower module:
Registering modules 31 is used for the information of each transcoding server in the Accreditation System;
User side interface module 32 is used to receive the transcoding task requests, and the result is sent to user terminal with the transcoding task executions;
In embodiments of the present invention preferably, described priority parameters can be determined by following scheme:
Scheme 1: by the urgency parameter of user's setting in the current transcoding task requests, and the time of reception of current transcoding task requests is determined;
Scheme 2: described priority parameters is by reading the preset level of target terminal user, and the time of reception of current transcoding task requests is determined;
Scheme 3: described priority parameters is by reading the preset level of target terminal user, the urgency parameter that the user is provided with in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.
In specific implementation, the information of described transcoding server is the IP address information; The running state information of described transcoding server comprises the work at present state information and the resource occupation information of transcoding server.
Described task distribution module may further include following submodule:
Preferential distribution submodule is used for the transcoding task that priority is the highest, and it is free time and the minimum transcoding server of resource occupation that the work at present state is given in scheduling.
And/or, end the distribution submodule, the work at present state that is used for all transcoding servers in current system is when having much to do, and suspends the scheduling of described transcoding task and handles.
Not detailed part in the description of present embodiment can just not given unnecessary details at this referring to the related description in the previous embodiment.
More than distributed system and a kind of dispatch server that a kind of multi-media transcoding provided by the present invention is used be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the distributed system that multi-media transcoding is used is characterized in that, comprising:
User terminal is used to submit to the transcoding task requests, and, receive transcoding task executions result;
Transcoding server comprises:
The active feedback module is used for feeding back its running state information in real time to described dispatch server;
Transcoded processing module is used for carrying out according to the transcoding task of dispatch server distribution the transcoding processing of corresponding format, and returns transcoding task executions result to dispatch server;
Dispatch server comprises:
Registering modules is used for the information of each transcoding server in the Accreditation System;
The user side interface module is used to receive the transcoding task requests, and the result is sent to user terminal with the transcoding task executions;
Configuration module is used for described transcoding task requests configuration transmission parameter is comprised priority parameters in the described transmission parameter;
The task distribution module is used for the running state information according to described transmission parameter and transcoding server feedback, and distribution transcoding task is to corresponding transcoding server.
2. the system as claimed in claim 1 is characterized in that, the urgency parameter that described priority parameters is provided with by user in the current transcoding task requests, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, the urgency parameter that the user is provided with in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.
3. system as claimed in claim 1 or 2 is characterized in that, the information of described transcoding server is the IP address information; The running state information of described transcoding server comprises the work at present state information and the resource occupation information of transcoding server.
4. system as claimed in claim 3 is characterized in that, described task distribution module further comprises:
Preferential distribution submodule is used for the transcoding task that priority is the highest, and it is free time and the minimum transcoding server of resource occupation that the work at present state is given in scheduling.
5. system as claimed in claim 3 is characterized in that, described task distribution module further comprises:
End the distribution submodule, the work at present state that is used for all transcoding servers in current system is when having much to do, and suspends the scheduling of described transcoding task and handles.
6. a dispatch server is characterized in that, described dispatch server is arranged in the distributed system that multi-media transcoding is used, and comprises a plurality of transcoding servers and user terminal in the described distributed system, and described dispatch server comprises:
Registering modules is used for the information of each transcoding server in the Accreditation System;
The user side interface module is used to receive the transcoding task requests, and the result is sent to user terminal with the transcoding task executions;
Configuration module is used for described transcoding task requests configuration transmission parameter is comprised priority parameters in the described transmission parameter;
The task distribution module is used for the running state information according to described transmission parameter and the real-time feedback of transcoding server, and distribution transcoding task is to corresponding transcoding server.
7. dispatch server as claimed in claim 6 is characterized in that, the urgency parameter that described priority parameters is provided with by user in the current transcoding task requests, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, and the time of reception of current transcoding task requests is determined;
Perhaps, described priority parameters is by reading the preset level of target terminal user, the urgency parameter that the user is provided with in the current transcoding task requests, and the time of reception of current transcoding task requests is determined.
8. as claim 6 or 7 described dispatch servers, it is characterized in that the information of described transcoding server is the IP address information; The running state information of described transcoding server comprises the work at present state information and the resource occupation information of transcoding server.
9. dispatch server as claimed in claim 8 is characterized in that, described task distribution module further comprises:
Preferential distribution submodule is used for the transcoding task that priority is the highest, and it is free time and the minimum transcoding server of resource occupation that the work at present state is given in scheduling.
10. dispatch server as claimed in claim 8 is characterized in that, described task distribution module further comprises:
End the distribution submodule, the work at present state that is used for all transcoding servers in current system is when having much to do, and suspends the scheduling of described transcoding task and handles.
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