CN104244025A - Cluster transcoding system and method thereof - Google Patents
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Abstract
The invention provides a cluster transcoding system. The system comprises a transcoding management center, a transcoding control machine and transcoding workstations, wherein the transcoding management center is used for receiving the transcoding task of a task source system, the transcoding control machine is connected with the transcoding management center and the transcoding workstations through a network so as to be used for controlling the N transcoding workstations to carry out transcoding processing on the transcoding task and synthesizing transcoding results returned by all the transcoding workstations, and the processed results are stored in the transcoding management center; each transcoding workstation is connected with the transcoding control machine through the network to be used for control based on the transcoding control machine, obtaining the calculation subtask of the transcoding workstation, carrying out transcoding processing, and reporting the transcoded result to the transcoding control machine. The invention further discloses a cluster transcoding method. According to the cluster transcoding system and method, the same transcoding task is preprocessed to be divided into N calculation subtasks through one transcoding control machine, the calculation subtasks are assigned to the transcoding workstations to be transcoded, the speed of transcoding is increased, and the existing calculation performance bottleneck is broken through.
Description
Technical field
The present invention relates to data processing field, more specifically, relate to a kind of cluster transcoding system and method thereof.
Background technology
Along with the development of current media technology, current traditional media also develops to serviceization gradually, and more focus on user's property of participation, and, along with the development of high definition and SARFT(The State Administration of Radio and Television) are to the requirement of each TV station high standard definition simulcast, except when the broadcast of front high-definition program, the historical summary of SD program broadcasted requirement for adapting to high definition in the past, also needed to carry out corresponding code check conversion.Vision signal can be become another kind of form from a kind of format conversion by video converter, is used for meeting the digital video multi-modulation scheme conversion requirements of more wide spectrum.Along with the continuous evolution of the Internet and cell phone network, the platform of broadcasting media gets more and more, and the corresponding media formats propagating platform support also gets more and more.From mobile phone, to IPTV, to high-definition digital broadcast, different platform is completely different to the requirement of content format, and which includes coded format/specification, resolution, the requirement of frame per second equal-specification, therefore the conversion of content encoding format becomes essential.
Mainly there are three kinds of transcodings and require in Video Quality Metric: H.264 the conversion between different video form, such as, convert to from DV25 at present; Change bit rate and meet heterogeneous networks bandwidth or device plays speed; The conversion of definition, such as, transfer the even lower definition of SD to by HD video, or reverse process.In existing technical scheme, as shown in Figure 1, system comprises WEB terminal, dispatch server and n transcoding work station, dispatch server and WEB terminal are carried out alternately, multiple transcoding task controls by dispatch server is unified, multiple transcoding task is distributed to each transcoding work station respectively, then by transcoding work station, source format is converted to object format.As everyone knows, video code conversion is the process of a high computational load, need to carry out full decoder, video filtering/image procossing and entirely encoding to output format to the video flowing of input, so video code conversion is processing procedure that is very consuming time, consumption computational resource, all the more so to HD video.Prior art is not only very high to the performance requirement of video code conversion work station, and can not improve the speed of single transcoding task.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of cluster transcoding system and method thereof, can solve the problem that the speed that can not improve single transcoding task existed in prior art realizes efficiently surpassing real-time video transcoding.
For achieving the above object, technical scheme of the present invention is achieved in that
On the one hand, provide a kind of cluster transcoding system, comprise: transcoding administrative center, transcoding controller and N platform transcoding work station, wherein, transcoding administrative center, is connected by the task origin system in network and the external world and transcoding controller, for receiving the transcoding task of task origin system, wherein, transcoding task comprises transcoding Template Information and source file, and transcoding Template Information comprises source format and object format; Transcoding controller, be connected with transcoding administrative center, every platform transcoding work station by network, for control N platform transcoding work station, transcoding process is carried out to transcoding task, and the transcoding result that every platform transcoding work station returns is carried out synthesis process, the result after process is stored into transcoding administrative center; Every platform transcoding work station, is connected with transcoding controller by network, for the control based on transcoding controller, obtains the calculating subtask of this TV station transcoding work station and performs transcoding process, reporting the result after transcoding process to transcoding controller.
Preferably, transcoding controller comprises: task split cells and task allocation unit, wherein,
Task split cells, for loading transcoding task from transcoding administrative center, carries out preliminary treatment by transcoding task, splits into N number of calculating subtask;
Task allocation unit, for distributing to each transcoding work station by each calculating subtask.
Preferably, every platform transcoding work station comprises: transcoding processing unit and transcoding result reporting element, wherein:
Transcoding processing unit, for decode to video data according to the calculating subtask obtained and decoded result re-started coding;
Transcoding result reporting element, for reporting the video data after coding to transcoding controller.
Preferably, transcoding controller also comprises: collection unit and output synthesis unit, wherein,
Collection unit, for collecting the video data after coding that each transcoding result reporting element returns;
Export synthesis unit, for the video data after the coding in collection unit being carried out synthesis process, and the video data being encapsulated as object format is stored into transcoding administrative center.
Preferably, transcoding administrative center is also for receiving the video file of the object format after transcoding controller synthesis process.
Preferably, transcoding administrative center also comprises transmitting element, for the video file of object format is sent to task origin system.
On the other hand, additionally provide a kind of cluster transcoding method, comprising: transcoding administrative center receives the transcoding task of extraneous task origin system; Transcoding controller control N platform transcoding work station carries out transcoding process to transcoding task; Based on the control of transcoding controller, every platform transcoding work station obtains the calculating subtask of this TV station transcoding work station; Subtask will be calculated and perform transcoding process, and the result after transcoding process will be reported to transcoding controller.
Preferably, transcoding controller control N platform transcoding work station comprises the step that transcoding task carries out transcoding process: from transcoding administrative center, load transcoding task, carry out preliminary treatment to transcoding task, split into N number of calculating subtask; Each transcoding work station is distributed in each calculating subtask.
Preferably, subtask will be calculated and perform transcoding process, and the result after transcoding process is reported comprise to the step of transcoding controller: according to the calculating subtask obtained video data decoded and decoded result is re-started coding; Video data after coding is reported to transcoding controller.
Preferably, after reporting to transcoding controller by the video data after coding, the method also comprises: the collection unit in transcoding controller collects the video data after each coding; Video data after coding in collection unit is carried out synthesis process, and the video data being encapsulated as object format is stored into transcoding administrative center; The video file of object format is sent to task origin system by the transmitting element in transcoding administrative center.
Technique effect of the present invention:
1. the present invention utilizes a transcoding controller that same transcoding task is carried out preliminary treatment and splits into N number of calculating subtask, and N number of calculating subtask is distributed to each transcoding work station respectively carry out transcoding process, improve the speed of transcoding, realize efficient super real-time video transcoding, breach calculated performance bottleneck in the past, make user's heart of feeling well pleasing;
2. the present invention has very high flexibility, the performance of transcoding controller, transcoding work station is determined according to the requirement of transcoding efficiency and the form of video file produced, the quantity of transcoding work station, carry out cluster transcoding by the method for Distributed Calculation, meet different application demands;
3. the present invention utilizes multiple transcoding work station to carry out real-time Video coding to vision signal, can set encoder bit rate height as requested, for different application, realize, under same code check condition, obtaining best image quality.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of prior art transit code system;
Fig. 2 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention one;
Fig. 3 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention two;
Fig. 4 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention three;
Fig. 5 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention four;
Fig. 6 shows the flow chart of the cluster transcoding method according to the embodiment of the present invention five;
Fig. 7 shows the flow chart of the cluster transcoding method according to the embodiment of the present invention six.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Embodiment one
Fig. 2 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention one; As shown in Figure 2, this system comprises: transcoding administrative center 10, transcoding controller 20 and N platform transcoding work station 30, wherein,
Transcoding administrative center 10, be connected by the task origin system in network and the external world and transcoding controller 20, for receiving the transcoding task of task origin system, wherein, transcoding task comprises transcoding Template Information and source file, and transcoding Template Information comprises source format and object format;
Transcoding controller 20, be connected with transcoding administrative center 10, every platform transcoding work station 30 by network, transcoding process is carried out for control N platform transcoding work station 30 pairs of transcoding tasks, and the transcoding result that every platform transcoding work station 30 returns is carried out synthesis process, the result after process is stored into transcoding administrative center 10; The transcoding controller 20 that the present invention mentions is ordinary PC, and the network mentioned can be wireless network also can be cable network, then this does not limit.
Every platform transcoding work station 30, is connected with transcoding controller 20 by network, for the control based on transcoding controller 20, obtains the calculating subtask of this TV station transcoding work station and performs transcoding process, reporting the result after transcoding process to transcoding controller 20.
Embodiments of the invention utilize a transcoding controller that same transcoding task is carried out preliminary treatment and split into N number of calculating subtask, and N number of calculating subtask is distributed to each transcoding work station respectively carry out transcoding process, improve the speed of transcoding, realize efficient super real-time video transcoding, breach calculated performance bottleneck in the past, make user's heart of feeling well pleasing.
Embodiment two
Fig. 3 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention two; As shown in Figure 3, transcoding controller 20 comprises: task split cells 202 and task allocation unit 204, wherein,
Task split cells 202, for loading transcoding task from transcoding administrative center 10, carries out preliminary treatment by transcoding task, splits into N number of calculating subtask;
Task allocation unit 204, for distributing to each transcoding work station 30 by each calculating subtask.
Embodiment three
Fig. 4 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention three; As shown in Figure 4, every platform transcoding work station 30 comprises: transcoding processing unit 302 and transcoding result reporting element 304, wherein:
Transcoding processing unit 302, for decode to video data according to the calculating subtask obtained and decoded result re-started coding;
Transcoding result reporting element 304, for reporting the video data after coding to transcoding controller 20.
Transcoding controller 20 also comprises: collection unit 206 and output synthesis unit 208, wherein,
Collection unit 206, for collecting the video data after coding that each transcoding result reporting element 304 returns;
Export synthesis unit 208, for the video data after the coding in collection unit 302 being carried out synthesis process, and the video data being encapsulated as object format is stored into transcoding administrative center 10.
The common Video coding of major part and encapsulation format are supported in the input of embodiments of the invention, support SD and high definition; The forms such as H.264 output supported, MPEG-4, MPEG-2, QuickTime, support the encapsulation such as MPEG PS/TS, AVI, MOV and FLV, output format can increase as required again.
Embodiments of the invention have very high flexibility, the performance of transcoding controller and transcoding work station is determined according to the requirement of transcoding efficiency and the form of video file produced, the quantity of transcoding work station, carry out cluster transcoding by the method for Distributed Calculation, meet different application demands; Such as, use the cluster of 8 transcoding work station compositions, DV25 is converted to the video of the H.264 form of 8Mbps, require the transcoding realizing 32 speeds, we can calculate the performance of transcoding controller and transcoding work station by the method for Distributed Calculation, carry out the parameters of configuration-system according to demand.
Embodiment four
Fig. 5 shows the schematic diagram of the cluster transcoding system according to the embodiment of the present invention four; As shown in Figure 5, transcoding administrative center 10 also synthesizes the video file of the object format after process for receiving transcoding controller 20.
Transcoding administrative center 10 also comprises transmitting element 102, for the video file of object format is sent to task origin system.
Embodiment five
Fig. 6 shows the flow chart of the cluster transcoding method according to the embodiment of the present invention five; As shown in Figure 6, the method, comprising:
Step S601, transcoding administrative center receives the transcoding task of extraneous task origin system;
Wherein, transcoding task comprises transcoding Template Information and source file, and transcoding Template Information comprises source format and object format.
Step S602, transcoding controller control N platform transcoding work station carries out transcoding process to transcoding task;
Step S603, based on the control of transcoding controller, every platform transcoding work station obtains the calculating subtask of this TV station transcoding work station;
Step S604, will calculate subtask and perform transcoding process, and report the result after transcoding process to transcoding controller.
Particularly, transcoding controller control N platform transcoding work station comprises the step that transcoding task carries out transcoding process:
Step S601-1, loads transcoding task from transcoding administrative center, carries out preliminary treatment to transcoding task, splits into N number of calculating subtask;
Step S601-2, distributes to each transcoding work station by each calculating subtask.
Particularly, subtask will be calculated and perform transcoding process, and the result after transcoding process is reported comprise to the step of transcoding controller:
Step S604-1, to decode to video data according to the calculating subtask obtained and decoded result is re-started coding;
Step S604-2, reports the video data after coding to transcoding controller.
Embodiment six
Fig. 7 shows the flow chart of the cluster transcoding method according to the embodiment of the present invention six; As shown in Figure 7, after reporting to transcoding controller by the video data after coding, the method also comprises:
Step S701, the collection unit in transcoding controller collects the video data after each coding;
Step S702, the video data after the coding in collection unit is carried out synthesis process, and the video data being encapsulated as object format is stored into transcoding administrative center;
Step S703, the video file of object format is sent to task origin system by the transmitting element in transcoding administrative center.
Embodiments of the invention utilize a transcoding controller that same transcoding task is carried out preliminary treatment and split into N number of calculating subtask, and N number of calculating subtask is distributed to each transcoding work station respectively carry out transcoding process, improve the speed of transcoding, realize efficient super real-time video transcoding, breach calculated performance bottleneck in the past, make user's heart of feeling well pleasing; The present invention has very high flexibility, the performance of transcoding controller, transcoding work station is determined according to the requirement of transcoding efficiency and the form of video file produced, the quantity of transcoding work station, carry out cluster transcoding by the method for Distributed Calculation, meet different application demands; The present invention utilizes multiple transcoding work station to carry out real-time Video coding to vision signal, can set encoder bit rate height as requested, for different application, realize, under same code check condition, obtaining best image quality.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a cluster transcoding system, is characterized in that, comprising: transcoding administrative center, transcoding controller and N platform transcoding work station, wherein,
Described transcoding administrative center, be connected by the task origin system in network and the external world and described transcoding controller, for receiving the transcoding task of described task origin system, wherein, described transcoding task comprises transcoding Template Information and source file, and described transcoding Template Information comprises source format and object format;
Described transcoding controller, be connected with transcoding work station described in described transcoding administrative center, every platform by network, for transcoding work station described in control N platform, transcoding process is carried out to described transcoding task, and the transcoding result that transcoding work station described in every platform returns is carried out synthesis process, the result after process is stored into described transcoding administrative center;
Transcoding work station described in every platform, be connected with described transcoding controller by network, for the control based on described transcoding controller, obtain the calculating subtask of this TV station transcoding work station and perform transcoding process, the result after transcoding process is reported to described transcoding controller.
2. cluster transcoding system according to claim 1, is characterized in that, described transcoding controller comprises: task split cells and task allocation unit, wherein,
Described task split cells, for loading described transcoding task from described transcoding administrative center, carries out preliminary treatment by described transcoding task, splits into N number of described calculating subtask;
Described task allocation unit, for distributing to transcoding work station described in each by each described calculating subtask.
3. cluster transcoding system according to claim 1, is characterized in that, described in every platform, transcoding work station comprises: transcoding processing unit and transcoding result reporting element, wherein:
Described transcoding processing unit, for decode to video data according to the calculating subtask obtained and decoded result re-started coding;
Described transcoding result reporting element, for reporting the video data after described coding to described transcoding controller.
4. cluster transcoding system according to claim 3, is characterized in that, described transcoding controller also comprises: collection unit and output synthesis unit, wherein,
Described collection unit, for collecting the video data after coding that described in each, transcoding result reporting element returns;
Described output synthesis unit, for the video data after the coding in described collection unit being carried out synthesis process, and the video data being encapsulated as object format is stored into described transcoding administrative center.
5. cluster transcoding system according to claim 1, is characterized in that, described transcoding administrative center is also for receiving the video file of the object format after described transcoding controller synthesis process.
6. cluster transcoding system according to claim 5, is characterized in that, described transcoding administrative center also comprises transmitting element, for the video file of described object format is sent to described task origin system.
7. a cluster transcoding method, is characterized in that, comprising:
Transcoding administrative center receives the transcoding task of extraneous task origin system;
Transcoding controller control N platform transcoding work station carries out transcoding process to described transcoding task;
Based on the control of described transcoding controller, transcoding work station described in every platform obtains the calculating subtask of this TV station transcoding work station;
Subtask will be calculated and perform transcoding process, and the result after transcoding process will be reported to described transcoding controller.
8. cluster transcoding method according to claim 7, is characterized in that, described in described transcoding controller control N platform, transcoding work station comprises the step that described transcoding task carries out transcoding process:
From described transcoding administrative center, load described transcoding task, preliminary treatment is carried out to described transcoding task, split into N number of calculating subtask;
Transcoding work station described in each is distributed in each described calculating subtask.
9. cluster transcoding method according to claim 7, is characterized in that, the described subtask that will calculate performs transcoding process, and the result after transcoding process is reported and comprise to the step of described transcoding controller:
According to the calculating subtask obtained video data decoded and decoded result is re-started coding;
Video data after described coding is reported to described transcoding controller.
10. cluster transcoding method according to claim 9, is characterized in that, described video data after described coding is reported to described transcoding controller after, the method also comprises:
Collection unit in described transcoding controller collects the video data after coding described in each;
Video data after coding in described collection unit is carried out synthesis process, and the video data being encapsulated as object format is stored into described transcoding administrative center;
The video file of described object format is sent to described task origin system by the transmitting element in described transcoding administrative center.
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Application publication date: 20141224 |