CN103813181A - System and method for optimizing video - Google Patents

System and method for optimizing video Download PDF

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Publication number
CN103813181A
CN103813181A CN201410052362.5A CN201410052362A CN103813181A CN 103813181 A CN103813181 A CN 103813181A CN 201410052362 A CN201410052362 A CN 201410052362A CN 103813181 A CN103813181 A CN 103813181A
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CN
China
Prior art keywords
video
transcoding
resource
attribute information
video resource
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CN201410052362.5A
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Chinese (zh)
Inventor
雷霆
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201410052362.5A priority Critical patent/CN103813181A/en
Publication of CN103813181A publication Critical patent/CN103813181A/en
Priority to PCT/CN2015/071210 priority patent/WO2015120766A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637—Control signals issued by the client directed to the server or network components
    • H04N21/6373—Control signals issued by the client directed to the server or network components for rate control, e.g. request to the server to modify its transmission rate

Abstract

The embodiment of the invention also discloses a system and a method for optimizing video, the system for optimizing video confirms that the video buffer system caches at least one transcoding video resource corresponding to the video resource while receiving the access request for the source video resource from the client side, the system confirms the transcoding video resource capable of being transmitted at the current network congestion state from the source video resource and at least one transcoding video resource according to the current network congestion state and transmits the obtained transcoding video resource to the client side, so the system for optimizing video can send the transcoding video resource being different in code rate to the client side based on the different network congestion states, the transcoding video resource with low code rate can be sent at serious network congestion state and the transcoding video resource with high code rate can be sent while the network congestion state is not serious, the system can provide smoother video resource for the client side and promote the usage experience for the user.

Description

A kind of video optimized system and method
Technical field
The present invention relates to technical field of video processing, relate in particular to a kind of video optimized system and method.
Background technology
Along with the development of network technology, mobile data services have also obtained development fast, and at present, the Internet manufacturer utilizes telecom operators' network to provide Video service to terminal, along with being the increase of video traffic flow, operator will face the demand in continuous increase operation broadband.
In order to meet the demand of current video server, current video optimized system has been introduced buffer memory Cache system, be illustrated in figure 1 the structural representation of video traffic in prior art, in the time that terminal sends video access request to video supplier, video optimized system also will get this video access request, first whether video optimized system can there is video resource corresponding to access request to caching system coupling, if there is video resource in caching system time, video optimized system will directly read this video resource from caching system, if there is not this video resource in caching system time, video access request is forwarded to the webserver by video optimized system, then the video resource returning in the webserver is issued to terminal.
Although current video optimized system can be directly to the video data that reads out buffer memory in caching system, but current caching system can only buffer memory source video resource, therefore the in the situation that of network congestion, if directly the source video resource in caching system is sent to terminal, there will be the video resource transmission speed between video optimized system and client slower, the problem that even cannot transmit.
Summary of the invention
The embodiment of the present invention provides a kind of video optimized system and method, and in order to solve in prior art the network congestion in the situation that, the video resource transmission speed between video optimized system and client is slower, the problem that even cannot transmit.
Its concrete technical scheme is as follows:
Embodiment of the present invention first aspect provides a kind of video optimized system, comprising:
Determination module, for in the time receiving the access request of source video resource of client transmission, determine in video cache system and be cached with at least one transcoding video resource that requested described source video resource is corresponding, wherein, transcoding video resource is supported under network congestion state and transmits;
Processing module, for determining and be supported in the video resource transmitting under current network congestion state at source video resource and described at least one transcoding video resource;
Sending module, for being sent to described client by the described video resource of determining.
In conjunction with first aspect, in the possible implementation of the first, described processing module, specifically for obtaining code check corresponding to each video resource difference in source video resource and described at least one transcoding video resource, in each code check obtaining, determine and meet the code check transmitting under current network congestion state, based on the code check of determining, in described source video resource and described at least one transcoding resource, determine the video resource that described code check is corresponding, as being supported in the video resource transmitting under front network congestion state.
Embodiment of the present invention second aspect provides a kind of video cache system, comprising:
Administration module, for obtaining the source video attribute information of the source video resource of buffer memory, according to the source video attribute information of described source video resource, determine at least one object video attribute information, the video attribute information of described object video attribute information for the object video obtaining after the video resource transcoding of described source is had;
Sending module, for being sent to video code conversion system by described source video resource and described source video attribute information, described at least one object video attribute information;
Cache module, for receive that described video code conversion system returns according to described source video attribute information and described at least one object video attribute information, described source video resource is carried out at least one transcoding video resource that transcoding processing obtains, and described at least one the transcoding video resource receiving is carried out to buffer memory, wherein, different transcoding video resources is supported under different network congestion states and transmits.
In conjunction with second aspect, in the possible implementation of the first, described administration module, characterize specifically for obtaining the grading parameter that user grades to the quality of video resource, determine the video attribute information that is more than or equal to sign video resource attribute corresponding to the grading parameter of threshold value, and using the video attribute information of determining as object video attribute information.
In conjunction with second aspect, in the possible implementation of the second, the source code rate that comprises described source video resource in the described source video attribute information that described administration module obtains, in each object video attribute information, all comprise the object code check that is less than described source code rate, and the object code check comprising in each object video attribute information is different.
In conjunction with second aspect, in the third possible implementation, described administration module, also, for obtaining total access request number of the each video resource of all video resources of buffer memory, the video resource that total access request number is exceeded to threshold value is as described source video resource.
In conjunction with second aspect, in the 4th kind of possible implementation, described administration module, also for send the authentication request of the identification information that carries video cache system to described trans-coding system, receives the response message that the described video cache system of sign authentication that described video code conversion system returns is passed through.
In conjunction with second aspect, in the 5th kind of possible implementation, described administration module, also for send the transcoding request of application transcoding resource to described video code conversion system, described source video attribute information and described at least one object video attribute information in described transcoding request, are carried, in the time receiving the successful response message of sign transcoding resource bid that described video code conversion system returns, described source video resource is sent to described video code conversion system.
The embodiment of the present invention third aspect provides a kind of video code conversion system, comprising:
Transcoding administration module, the source video resource for the treatment of transcoding and corresponding source video attribute information and at least one the object video attribute information of described source video resource that send for receiver, video caching system, the video attribute information that described object video attribute information has after for described source video resource transcoding;
Transcoding module, be used for based on described source video attribute information and described at least one object video attribute information, be at least one transcoding video resource by described source video resource transcoding, wherein, different transcoding video resources is supported under different network congestion states and transmits;
Sending module, for being sent to described video cache system by described at least one transcoding video resource.
In conjunction with the third aspect, in the possible implementation of the first, described transcoding module, specifically for obtaining the object code check comprising in the source code rate that comprises in the video attribute information of described source and each object attribute information, according to each object code check, be at least one transcoding video resource with object code check by described source video resource transcoding, wherein, a transcoding video resource has an object code check, and the object code check that each transcoding video resource has is different.
In conjunction with the third aspect, in the possible implementation of the second, described transcoding administration module, also for receiving the authentication information of the identification information that carries described video cache system that described video cache system sends, in the time that described identification information mates with default identification information, send and characterize the response message that described video cache system authentication is passed through to described video cache system.
In conjunction with the third aspect, in the third possible implementation, described transcoding administration module, also for receive that described video cache system sends for applying for the transcoding request of transcoding resource, in described transcoding request, carry described source video attribute information and at least one object video attribute information, return to the successful response message of transcoding resource bid to described video cache system, and receive the described source video resource that described video cache system sends.
Embodiment of the present invention fourth aspect provides a kind of method for optimizing video, comprising:
In the time receiving the access request of source video resource of client transmission, determine in video cache system and be cached with at least one transcoding video resource that requested described source video resource is corresponding, wherein, transcoding video resource is supported under network congestion state and transmits;
In source video resource and described at least one transcoding video resource, determine the video resource transmitting under support current network congestion state;
The described video resource of determining is sent to described client.
In conjunction with fourth aspect, in the possible implementation of the first, in source video resource and described at least one transcoding video resource, determine the video resource transmitting under network congestion state before being supported in, comprising:
Obtain code check corresponding to each video resource difference in source video resource and described at least one transcoding resource;
In each code check obtaining, determine and meet the code check transmitting under current network congestion state;
Based on the code check of determining, in described source video resource and described at least one transcoding resource, determine the video resource that described code check is corresponding, as being supported in the video resource transmitting under front network congestion state.
The embodiment of the present invention the 5th aspect provides a kind of video cache method, comprising:
Obtain the source video attribute information of the source video resource of buffer memory;
According to the source video attribute information of described source video resource, determine at least one object video attribute information, the video attribute information of described object video attribute information for the object video obtaining after the video resource transcoding of described source is had;
Described source video resource and described source video attribute information, described at least one object video attribute information are sent to video code conversion system;
Receive that described video code conversion system returns according to described source video attribute information and described at least one object video attribute information, described source video resource is carried out at least one transcoding video resource that transcoding processing obtains, wherein, different transcoding video resources is supported under different network congestion states and transmits; And described at least one the transcoding video resource receiving is carried out to buffer memory.
In conjunction with the 5th aspect, in the possible implementation of the first, the source code rate that comprises described source video resource in the video attribute information of described source, in each object video attribute information, all comprise the object code check that is less than described source code rate, and the object code check comprising in each object video attribute information is different.
In conjunction with the 5th aspect, in the possible implementation of the second, before obtaining the source video attribute information of the source video resource of buffer memory, also comprise:
Obtain total access request number of each video resource in all video resources of buffer memory;
The video resource that total access request number is exceeded to threshold value is as described source video resource.
In conjunction with the 5th aspect, in the third possible implementation, before described source video resource and described source video attribute information, described at least one object video attribute information are sent to trans-coding system, also comprise:
Send the authentication request of the identification information that carries video cache system to described video code conversion system;
Receive the response message that the described video cache system of sign authentication that described video code conversion system returns is passed through.
In conjunction with the 5th aspect, in the 4th kind of possible implementation, the source video attribute information of described source video resource and described source video resource, at least one object video attribute information are sent to video code conversion system, comprising:
Send the transcoding request of application transcoding resource to described video code conversion system, in described transcoding request, carried described source video attribute information and described at least one object video attribute information;
In the time receiving the successful response message of sign transcoding resource bid that described video code conversion system returns, described source video resource is sent to described video code conversion system.
A kind of video optimized system is also provided in embodiments of the present invention, this video optimized system is in the time receiving the access request of source video resource of client transmission, whether determine in video cache system at least one transcoding video resource corresponding to the active video resource of buffer memory, if when at least one transcoding video resource that in video cache system, the active video resource of buffer memory is corresponding, video optimized system will be according to current network congestion state, in source video resource and at least one transcoding video resource, determine the video resource that can transmit under current network congestion state, and the video resource getting is sent to client, realized so video optimized system congestion state Network Based not in the same way client send different video resources, as: in the time that network congestion is serious, send the low code check transcoding video resource after transcoding, in the time that network congestion state is lighter, send transcoding video resource or the source video resource of high code check, guaranteeing under the prerequisite of video quality like this, can be more smooth by video resource transmission value client, promote user's experience.
In addition, in the embodiment of the present invention in the time that in video cache system, the source video resource of buffer memory has been accessed frequently, the source video attribute information of video cache system acquisition source video resource, and at least one object video attribute information corresponding to source video resource, and by source video resource, source video attribute information, at least one object video attribute information is sent to video code conversion system, then at least one transcoding video resource that receiver, video trans-coding system returns, the code check of this transcoding video resource is less than the code check of source video resource, final video caching system is by buffer memory transcoding video resource, thereby realize the buffer memory of video cache system to transcoding video resource, promote the utilance of caching system.
In addition, a kind of method of video code conversion is also provided in the embodiment of the present invention, the source video resource that video code conversion system sends based on video cache system in the method, source video attribute information and at least one object video attribute information, be at least one transcoding video resource by source video resource transcoding, each transcoding video resource has an object video attribute information, such as be multiple transcoding video resources with different code checks by source video resource transcoding, final video trans-coding system is sent to video cache system by all transcoding video resources and carries out buffer memory, therefore realized the transcoding of the many video attributes of source video resource by video code conversion system, video code conversion system just can provide for video cache system the transcoding video resource of many video attributes like this.
Accompanying drawing explanation
Fig. 1 is the structural representation of video service system in prior art;
Fig. 2 is the structural representation of a kind of video optimized system in the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of video cache system in the embodiment of the present invention;
Fig. 4 is the structural representation of a kind of video code conversion system in the embodiment of the present invention;
Fig. 5 is the schematic diagram of a kind of video service system in the embodiment of the present invention;
Fig. 6 is the process schematic diagram of a kind of video access in the embodiment of the present invention;
Fig. 7 is the flow chart of a kind of method for optimizing video in the embodiment of the present invention;
Fig. 8 is the flow chart of a kind of video cache method in the embodiment of the present invention;
Fig. 9 is the flow chart of a kind of video transcoding method in the embodiment of the present invention.
Embodiment
When client is initiated video access request to the Video service operator that Video service is provided, video optimized system also will receive this video access request, video optimized system can be first to the caching system video resource that need to access of user of having inquired about buffer memory whether, if in caching system when this video resource of buffer memory, video optimized system directly reads this video resource from caching system, and is forwarded to client; If while there is not this video resource in caching system, video optimized system will be obtained this video resource to the webserver, and the video resource getting is forwarded to client.
Therefore in such scheme, video optimized system can only send the source video resource that the webserver provides to client, in the situation that network congestion is comparatively serious, video optimized system also can only be to client transmission source video file, can cause like this video resource transmission speed between video optimized system and client slower, the problem that even cannot transmit.
In order to address the above problem, a kind of video optimized system is provided in embodiments of the present invention, comprise determination module, processing module and sending module; Determination module, for in the time receiving the access request of video resource of client transmission, determine and in caching system, be cached with at least one transcoding video resource that requested source video resource is corresponding, for determine the transcoding video resource transmitting under network congestion state before being supported at source video resource and at least one transcoding video resource, sending module, for being sent to client by the video resource of determining.Network congestion state that can be based on different by this video optimized system, for client provides the video resource that uses network congestion state, such as in the time that congestion state is serious, provide the transcoding video resource of low code check, transcoding video resource or the source video resource of high code check are provided in the time that network congestion state is not serious, so not only take full advantage of Internet resources, also promoted user's experience.
Below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, should be appreciated that just explanation rather than the restriction to technical solution of the present invention of technical characterictic in the embodiment of the present invention and embodiment.
Embodiment mono-:
The embodiment of the present invention also provides a kind of video optimized system, the structural representation of the video optimized system in the embodiment of the present invention as shown in Figure 2, and this system comprises:
Determination module 201, in the time receiving the access request of source video resource that client sends, determines and in caching system, is cached with at least one transcoding video resource that requested source video resource is corresponding;
Processing module 202, for determining the transcoding video resource transmitting under network congestion state before being supported at source video resource and at least one transcoding video resource;
Sending module 203, for being sent to client by the transcoding video resource getting.
Specifically, in the time that video optimized system receives the video access request of client, first determination module 201 in this video optimized system is in caching system, to determine whether to be cached with this video resource, wherein in caching system, the video resource of buffer memory has multiple possibility, such as can be source video resource, namely not passing through the video resource of transcoding processing, can be source video resource and the transcoding video resource after transcoding certainly.
If when video resource corresponding to the video access request of client is source video resource in caching system, video optimized system also can only be returned to source video resource to client;
If when video resource corresponding to the video access request of client is transcoding video resource in caching system, video optimized system can be selected to return to transcoding video resource to client, concrete selection mode is as follows:
Mode one: if the transcoding video resource of caching system buffer memory only has one, now this video optimized system is by the network congestion state obtaining between current and client, in the time that network congestion is not serious, return to source video resource to client, if when network congestion state is serious, transcoding video resource corresponding source video resource is back to client.
Mode two: multiple if the transcoding video resource of caching system buffer memory comprises, such as transcoding video resource comprises following three kinds:
There is the transcoding video resource of resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs;
There is the transcoding video resource of resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs;
There is the transcoding video resource of resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs;
Need to determine and send any transcoding video resource in this video optimized system in such cases, now this video optimized system will be obtained the congested state of current network, processing module 202 in video optimized system will be obtained code check corresponding to each transcoding video resource difference in all transcoding video resources, in each code check obtaining, determine and meet the code check transmitting under current network congestion state, based on the code check of determining, in at least one transcoding resource, determine the transcoding video resource that transcoding video resource that described code check is corresponding transmits under as network congestion state before being supported in.
Such as in the time that network congestion state is comparatively serious, processing module 202 will be at 1205kpbs, 732kpbs, in these 3 code checks of 322kpbs, select 322kpbs, then determine the transcoding video resource that this code check is corresponding, that is: there is resolution 240P, frame per second 25, coding and decoding form H264, the transcoding video resource of code check 322kpbs, by selecting the transcoding video resource of low code check can guarantee the client that transfers to that transcoding video resource can be smooth when the network heavy congestion, guarantee that like this user can watch the video of flow process, also guaranteed the quality of video resource simultaneously.
If when network congestion state is not serious, video optimized system will be determined the transcoding video resource of a high code check, that is: can be the transcoding video resource with resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs, then the video resource of high code check is sent to client; Certainly, in the time that network congestion state is not serious, also can directly source video resource be sent to client.
In the embodiment of the present invention one, video optimized system is in the time getting the video resource access request of client, determine and in caching system, whether be cached with at least one transcoding video resource that video resource is corresponding, if while being cached with at least one transcoding video resource corresponding to video resource in caching system, video optimized system will be according to current network congestion state, in source video resource and at least one transcoding video resource, determine under current network congestion state can smooth transmission transcoding video resource, and the transcoding video resource getting is sent to client, realize so video optimized system based on heterogeneous networks congestion state, the dynamic video resource that is sent to client of adjusting, that is: in the time that network congestion is serious, send the transcoding video resource of low code check, in the time that network congestion state is lighter, send transcoding video resource or the source video resource of high code check, video optimized like this system can guarantee under the prerequisite of video quality, by the client that the is sent to more smooth video resource of user's needs, thereby promote user's experience.
Embodiment bis-:
Can be the provide support transcoding video resource of heterogeneous networks congestion state of client in order to make video optimized system, therefore video cache system is supported the transcoding video resource of different code checks in embodiments of the present invention, be illustrated in figure 3 the structural representation of a kind of video cache system in the embodiment of the present invention, this video cache system comprises:
Administration module 301, for obtaining the source video attribute information of the source video resource of buffer memory, according to the source video attribute information of source video resource, determine at least one object video attribute information, the video attribute information of object video attribute information for the object video obtaining after the video resource transcoding of source is had;
Sending module 302, for being sent to trans-coding system by source video resource and source video attribute information, at least one object video attribute information;
Cache module 303, for receive that trans-coding system returns according to source video attribute information and at least one object video attribute information, source video resource is carried out at least one transcoding video resource that transcoding processing obtains, and described at least one the transcoding video resource receiving is carried out to buffer memory, wherein, different transcoding video resources is supported under different network congestion states and transmits.
Further, in order to guarantee that the video resource that client-requested frequency is higher can be cached in video cache system timely, what therefore in video cache system, need buffer memory is the video resource that client-requested frequency is higher, specifically, total access request number of each video resource will be added up in video cache system, if when total access request number of a certain video resource exceedes predetermined threshold value, video cache system will send this video resource to the webserver and obtain request, just corresponding this video resource of buffer memory after receiving the video resource that the webserver returns, now the video resource of buffer memory is exactly source video resource.
After the video resource returning at the video cache system cache webserver, administration module 301 will calculate total access times of each source video resource in all video resources of buffer memory, if while existing total access request number to exceed the source video resource of threshold value, using this source video resource as the source video resource that can carry out transcoding, such as total access request number of a certain source video resource is 550, and set threshold value is 500 in administration module 301, now illustrate that this source video resource is by frequent requests, now administration module 301 will generate the transcoding task of carrying out video code conversion for this source video resource.
Based on this transcoding task, administration module 301 by and obtain the source video attribute information of source video resource.Source video attribute information herein at least will comprise code check, that is: 1367kpbs, certainly in the video attribute information of source, can also comprise one or several in the information such as resolution, form, frame per second, coding and decoding form of video, such as: the video attribute information of source video resource can be: resolution 720P, frame per second 25, video format FLV, code check 1367kbps.
After administration module 301 gets the source video attribute information of source video resource, administration module 301 characterizes by obtaining the grading parameter that user grades to the quality of video resource, determine the video attribute information of sign video resource attribute corresponding to the grading parameter of threshold values such as being greater than, and using the video attribute information of determining as object video attribute information.Such as, administration module 301 is transferred the user experience quality (English: Quality of Experience of preserving user and experiencing parameter, be called for short: QoE) model, in QoE model, preserve the corresponding relation between user experience quality and video attribute information, as shown in table 1:
Experience mark Resolution Frame per second Coding and decoding form Code check (kbps)
4.0 240P 25 H264 322
3.5 240P 25 H264 227
3.0 240P 13 H264 87
4.0 360P 25 H264 732
3.5 360P 25 H264 416
3.0 360P 25 H264 196
4.0 480P 25 H264 1205
3.5 480P 25 H264 635
3.0 480P 25 H264 416
Table 1
Wherein, the Experience Degree of experiencing the higher explanation of mark user is better, and all corresponding video attribute information of every kind of user experience, and in table 1, each is experienced under mark there being three video attribute information, such as the video attribute information of 4.0 correspondences has just comprised:
Resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs;
Resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs;
Resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
After administration module 301 gets the source attribute information of source video resource, just can be more than or equal at least one video attribute information of 4.0 and determine as object video attribute information experiencing mark based on this QoE model.
Such as the source video attribute information that administration module 301 gets is: resolution 720P, frame per second 25, coding and decoding form H264, code check 1367kpbs, based on recorded data in QoE model, going out user in QoE Model Selection, to experience mark be that 4.0 video attribute information is as follows:
Resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs; Or
Resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs; Or
The object video attribute information of resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs, certainly, in actual application, can select one of them object video attribute information, also can select two or multiple, in embodiments of the present invention this is not construed as limiting.
In addition, in embodiments of the present invention in order to guarantee the Experience Degree of user to video resource, therefore the object video attribute information of selecting is all to select user to experience mark the highest, such as the video attribute information of 4.0 correspondences in table 1, but in actual application, can select different video attribute information corresponding to mark of experiencing according to different application scenarioss, be 3.5 corresponding object video attribute information such as can select to experience mark.
Based on the content of foregoing description, administration module 301, after getting the source video attribute information of source video resource, just can be determined at least one object video attribute information based on source video attribute information.
Administration module 301 is after obtaining source video resource and at least one object attribute information, in order to guarantee the fail safe of system, certainly be also the stability for guaranteeing whole system, trans-coding system need to carry out authentication to video cache system, therefore administration module 301 can be sent to video code conversion system by the authentication request of the identification information that carries video cache system, it is the IP address of video cache system that identification information herein can be, but not limited to, video code conversion system is after receiving the authentication request of carrying identification information, video code conversion system is mated the identification information in authentication request with the identification information that prestores, if coupling, video code conversion system can be sent to administration module 301 by successful authentication response message.
After authentication success, administration module 301 is by the sending module 302 of notice video cache system.
Sending module 302 will be to video code conversion system application transcoding resource, simply, determine that exactly video code conversion system is current whether can provide enough transcoding resources to carry out transcoding to source video resource, therefore sending module 302 can send to trans-coding system the transcoding request of application transcoding resource, has carried source video attribute information and at least one object video attribute information in transcoding request.
Trans-coding system is by the source video attribute information in transcoding request and at least one object video attribute information, and whether can determine currently has enough transcoding resources to carry out transcoding to source video resource.
If sending module 302 receives trans-coding system while returning to the response message of transcoding failures in resource application, the state of sending module 302 in waiting for, namely the source video resource in cache module 303 can be sent to video code conversion system, this face has avoided video cache System Blind object to cause trans-coding system processing pressure to increase to trans-coding system transmission source video resource, or causes the problems such as video code conversion system exception.
If sending module 302 receives after the successful response message of transcoding resource bid that video code conversion system returns, the source video resource of buffer memory in cache module 303 is sent to video code conversion system by this sending module 302, and video code conversion system just can be carried out transcoding based on source video resource like this.
After video code conversion system transcoding completes, at least one transcoding video resource after transcoding can being completed is sent to video cache system, after the cache module 303 in video cache system receives transcoding video resource, just at least one the transcoding video resource receiving is carried out to buffer memory.
After cache module 303 is by the success of transcoding video resource buffer memory, this cache module 303 can send the successful information of a buffer memory to video code conversion system, so that video code conversion system has been determined video code conversion based on this information.This cache module 303 notifies administration module 301 to delete the transcoding task of setting up before simultaneously, certainly, has also preserved the source video resource without transcoding in caching system.
In the above-described embodiments in the embodiment of the present invention in the time that in video cache system, the source video resource of buffer memory has been accessed frequently, the source video attribute information of video cache system acquisition source video resource, and at least one object video attribute information corresponding to source video resource, and by source video resource, source video attribute information, at least one object video attribute information is sent to video code conversion system, then at least one transcoding video resource that receiver, video trans-coding system returns, the code check of this transcoding video resource is less than the code check of source video resource, final video caching system is by buffer memory transcoding video resource, thereby realize the buffer memory of the transcoding video resource of video cache system to different code checks, promote the utilance of video cache system.
Further, due to buffer memory in video cache system the transcoding video resource of different code checks, therefore video cache system can provide for video optimized system the transcoding video resource of different code checks, video optimized like this system can be selected the transcoding video resource transmitting under suitable current network state according to the congestion state of current network and send to client in caching system, guaranteeing under the prerequisite of video quality, promote again the fluency of the transmission of video between video optimized system and client, promoted user's experience.
Embodiment tri-:
A kind of video code conversion system is also provided in the embodiment of the present invention, and if Fig. 4 is the structural representation of a kind of video code conversion system in the embodiment of the present invention, this video code conversion system comprises:
Transcoding administration module 401, the source video resource for the treatment of transcoding and corresponding source video attribute information and at least one the object video attribute information of source video resource that send for receiving caching system;
Transcoding module 402, for based on source video attribute information and at least one object video attribute information, is at least one transcoding video resource by source video resource transcoding;
Sending module 403, for being sent to caching system by least one transcoding video resource.
First, video code conversion system is in embodiments of the present invention in order to guarantee self the stability of a system and fail safe, before carrying out transcoding, need caching system to carry out authentication, therefore at transcoding administration module 401 before reception sources video attribute information and object attribute information, this transcoding administration module 401 also will receive the authentication request of caching system transmission, in this authentication request, carried the identification information of caching system, this identification information can still be not limited to IP address.
If when this identification information does not mate with the identification information that prestores in video code conversion system, video code conversion system will can not provide transcoding service for caching system.
If when this identification information mates with the identification information that prestores in video code conversion system, the transcoding administration module 401 of video code conversion system will return to the successful response message of authentication to caching system.
Because the disposal ability of video code conversion system is limited, before carrying out video code conversion, video cache system need to be to video code conversion system application transcoding resource, therefore video cache system can send based on the successful response message of this authentication the transcoding application of application transcoding resource, source video attribute information and at least one the object video attribute information of in this transcoding application, having carried the source video resource for the treatment of transcoding to video code conversion system.
After transcoding administration module 401 in video code conversion system receives transcoding application, the code check of source video resource will be determined from the video attribute information of source, and from least one object video attribute information, determine code check corresponding to each video attribute information, such as code check in the video attribute information of source is 1367kpbs, and object attribute information one has three, corresponding code check is respectively: 1205kpbs, 732kpbs, 322kpbs.
Based on the code check obtaining, the source video resource that it need to be 1367kpbs by code check that this video code conversion system is determined respectively transcoding is that code check is 1205kpbs, 732kpbs, the transcoding video resource of 322kpbs, under precondition based on such, whether this transcoding administration module 401 can complete transcoding task by the transcoding resource that can use in current statistical computation trans-coding system, if can not complete this transcoding task time, transcoding administration module 401 will generate a wait instruction, and this wait instruction is sent to caching system, wait for video code conversion with instruction video caching system.
If transcoding administration module 401 determines that current transcoding resource can complete transcoding task, now transcoding administration module 401 will generate one and characterize the successful response message of transcoding resource bid, and this response message is sent to video cache system.
Video cache system will send the source video resource for the treatment of transcoding to video code conversion system based on this response message.
After transcoding administration module 401 receives the source video resource for the treatment of transcoding, source video resource is gone to transcoding module 402 by transcoding administration module 401, the source video attribute information based on source video resource, source video resource, at least one object attribute information are carried out transcoding by transcoding module 402, in video resource after video code conversion system transcoding, there is object video attribute information, specific as follows:
The source video attribute information of source video resource is: resolution 720P, frame per second 25, video format FLV, code check 1367kbps.
Object video attribute information is respectively:
Resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs;
Resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs;
Resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
Last trans-coding system by source video resource transcoding is:
There is the transcoding video resource of resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs; And
There is the transcoding video resource of resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs; And
There is the transcoding video resource of resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
After the transcoding video resource obtaining after transcoding, carry out buffer memory by least one the transcoding video resource obtaining being sent to video cache system by sending module 403.
After video code conversion system receives the successful response message of sign buffer memory that video cache system returns, this video code conversion system will determine that transcoding completes, and delete this transcoding task.
The source video resource that in the embodiment of the present invention, video code conversion system sends based on caching system, source video attribute information and at least one object video attribute information, be at least one transcoding video resource by source video resource transcoding, each transcoding video resource has an object video attribute information, such as be multiple transcoding video resources with different code checks by source video resource transcoding, final video trans-coding system is sent to video cache system by all transcoding video resources and carries out buffer memory, therefore realized the transcoding of the many video attributes of source video resource by video code conversion system, and video code conversion system also realizes the video code conversion of various code rate.
Embodiment tetra-:
The embodiment of the present invention also provides a kind of video service system, be illustrated in figure 5 the structural representation of a kind of video service system in the embodiment of the present invention, this service system comprises: video optimized system, the Cache system being connected with video optimized system, and the video code conversion system of Cache system connection, the operation flow between its each system is as follows:
1, client is initiated video access request to the webserver;
2, video optimized system, to the whether accessed video resource of buffer memory of Cache system queries, enters step 3 if be cached with this video resource, if while thering is no this video resource of buffer memory in Cache system, enter step 4;
3, the video resource of buffer memory in video optimized system acquisition Cache system;
4, the video resource obtaining in Cache system is forwarded to client by video optimized system;
5, video optimized system is to web server requests video resource;
6, video optimized system receives the video resource that the webserver returns;
7, the video resource that video optimized system is returned to the webserver is forwarded to client;
8, total access times of requested video resource in the Cache system statistics unit interval, in the time existing total access times to be greater than the video resource of threshold value, to this video resource of web server requests;
9, the video resource that the Cache system cache webserver returns;
10, whether Cache system real-time statistics exists access times to exceed the video resource of threshold value in the video resource of buffer memory;
If 11 exist access times to exceed the video resource of threshold value, Cache system creation transcoding task, obtains the source video attribute information that access times exceed the video resource of threshold value, and obtains at least one object video attribute information;
12, Cache system sends and carries the authentication request of Cache system ip address to video code conversion system, if while receiving the information of failed authentication, stops transcoding task, if while receiving the successful information of authentication, performs step 13;
13, Cache system sends application transcoding resource request to trans-coding system, source video attribute information and at least one object video attribute information in this request, are carried, if when transcoding failures in resource application, Cache system is adjusted into the transcoding state of waiting for, if when transcoding resource bid success, perform step 14;
14, video resource is sent to video code conversion system by Cache system;
15, video code conversion system sends according to Cache system video resource, source video attribute information, at least one object video attribute information start transcoding task, the source code rate that has comprised source video resource in the video attribute information of source, each object video attribute information at least one object video attribute information comprises an object code check, and object code check in each object video attribute information is different;
16, video code conversion system is sent to Cache system by least one the transcoding video resource after transcoding and carries out buffer memory, and wherein, the each transcoding video resource at least one transcoding video resource has an object code check;
17, Cache system, by after at least one transcoding video resource buffer memory success, sends the information of successful buffer memory to video code conversion system;
18, Cache system-kill transcoding task.
In said process, Cache system provides video resource for video code conversion system, and being back to Cache system, the transcoding video resource that video code conversion system completes transcoding carries out buffer memory, make like this Cache system realize the buffer memory of transcoding video data, take full advantage of the spatial cache in Cache system.
In addition, Cache system also got different video attribute information before transcoding, therefore trans-coding system can video resource and different video attribute information based on needing transcoding obtain different transcoding video resources, has namely realized the buffer memory of the different video attribute information in Cache system.
Based on Cache system cache on the basis of transcoding video resource, video optimized system is determined the corresponding change of mode from video resource to client that return to, detailed process as shown in Figure 6, comprises the steps: in Fig. 6
1, client sends video resource access request to the webserver;
2, video optimized system is to whether this video resource of buffer memory of Cache system queries;
3, Cache system is to the code check of all transcoding video resources corresponding to this video resource of video optimized system return cache;
4, video optimized system is determined the network congestion state between current and client;
5, video optimized system, according to the network congestion state between current and client, is determined the code check when preadaptation current network state;
6, the code check based on definite obtains this and has the transcoding video resource of this code check in Cache system;
7, video optimized system is returned to the transcoding video resource obtaining in Cache system to client.
In above-mentioned steps video optimized system based on and client between network congestion state, in the video resource of the different code checks of Cache system cache, determine the transcoding video resource that is applicable to current network congestion state, thereby guarantee the process of video resource transmission between video optimized system and client, promoted user's experience.
Embodiment five:
Corresponding embodiment mono-, the embodiment of the present invention also provides a kind of method for optimizing video, is illustrated in figure 7 the flow chart of a kind of method for optimizing video in the embodiment of the present invention, and the method comprises:
S701, in the time getting the access request of source video resource that client sends, determines and in caching system, is cached with at least one transcoding video resource that requested source video resource is corresponding;
In the time that client sends video resource access request to Video service operator, whether video optimized system first query caching system is cached with requested video resource, if while being cached with requested video resource in caching system, video optimized system will be transferred the video resource of buffer memory in caching system.
In certain video cache system in embodiments of the present invention, the video resource of buffer memory has comprised at least one transcoding video resource, wherein, different transcoding video resources is supported under different network congestion states and transmits, when video optimized system is determined and is cached with at least one transcoding video resource in video cache system, enter S702;
S702 determines and is supported in the transcoding video resource transmitting under current network congestion state in source video resource and at least one transcoding video resource;
If while being cached with following transcoding video resource in video cache system:
There is the transcoding video resource of resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs; And
There is the transcoding video resource of resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs; And
There is the transcoding video resource of resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
Video optimized system will detect the congestion state of the network between current and client, then congestion state Network Based is selected and is adapted at the transcoding video resource that transmits under current network congestion state, such as network congestion selects to have the transcoding video resource of resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs when comparatively serious; When network congestion state is lighter, select to have transcoding video resource or the direct transmission source video resource of resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
S703, is sent to client by the transcoding video resource of determining.
Embodiment six:
The video cache system of corresponding embodiment bis-, the embodiment of the present invention also provides a kind of video cache method, is illustrated in figure 8 the flow chart of a kind of video cache method in the embodiment of the present invention, and the method comprises:
S801, obtains the source video attribute information of the source video resource of buffer memory;
S802, according to the source video attribute information of source video resource, determines at least one object video attribute information;
S803, is sent to trans-coding system by source video resource and source video attribute information, at least one object video attribute information;
S804, receiver, video trans-coding system return according to source video attribute information and at least one object video attribute information, source video resource is carried out at least one transcoding video resource that transcoding processing obtains;
S805, carries out buffer memory by least one the transcoding video resource receiving.
In embodiments of the present invention, before S801, video cache system also will be obtained total access times of each video resource in all video resources of buffer memory, always then will ask in reply video resource that number of request exceedes threshold value as source video resource, exactly simply just can be as the video resource for the treatment of transcoding by the video resource of frequent requests.
Then by obtaining the source video attribute information of source video resource, in the video attribute information of source, at least to comprise the source code rate of source video resource, certainly can also comprise one or several in the information such as the resolution, form, frame per second, coding and decoding form of source video resource, such as: the video attribute information of source video resource can be: resolution 720P, frame per second 25, video format FLV, code check 1367kbps.
This video cache system is by the source video attribute information based on getting, get and characterize the grading parameter that user grades to the quality of video resource, and determine the video attribute information that is more than or equal to sign video resource attribute corresponding to the grading parameter of threshold value, using the video attribute information of determining as object video attribute information, specifically, user is stored in QoE model the quality grading of video resource in embodiments of the present invention, the parameter that this QoE model is preserved is specifically as shown in table 2, in table 2, every kind of video attribute information is all to there being one to experience mark, the higher sign of mark user is better to the Experience Degree of video resource corresponding to this video attribute information.
Experience mark Resolution Frame per second Coding and decoding form Code check (kbps)
4.0 240P 25 H264 322
3.5 240P 25 H264 227
3.0 240P 13 H264 87
4.0 360P 25 H264 732
3.5 360P 25 H264 416
3.0 360P 25 H264 196
4.0 480P 25 H264 1205
3.5 480P 25 H264 635
3.0 480P 25 H264 416
Table 2
Based on QoE model, video cache system equals all video attribute information of 4 and takes out experiencing mark in table 2, specifically comprises following video attribute information:
Resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs;
Resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs;
Resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
Final video caching system can be using the video attribute information of determining as object video attribute information.After the source of source video resource video attribute information and the required object video attribute information of transcoding, video cache system just can be sent to source video resource caching system and carry out video code conversion.
For fear of video cache System Blind object, source video resource is sent to video code conversion system in embodiments of the present invention, and increase video code conversion system processing pressure, or even the problem breaking down, therefore video cache system can send to video code conversion system the transcoding request of application transcoding resource, in this transcoding request, just carried source video attribute information and object video attribute information, the code check of video code conversion system in just can code check and object video attribute information based in the video attribute information of source determines whether there are enough transcoding resources like this.
If when video cache system receives the response message of the transcoding failures in resource application that video code conversion system returns, transcoding task is adjusted into wait state by video cache system, until trans-coding system is carried out transcoding task while having enough transcoding resources again.
If when video cache system receives the successful response message of transcoding resource bid that video code conversion system returns, source video resource is sent to video code conversion system by video cache system.
If the source video attribute information that video cache system sends to video code conversion system is: resolution 720P, frame per second 25, video format FLV, code check 1367kbps;
Object video attribute information is:
Resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs;
Resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs;
Resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
The transcoding video resource that this video cache system receives should be just:
There is the transcoding video resource of resolution 240P, frame per second 25, coding and decoding form H264, code check 322kpbs;
There is the transcoding video resource of resolution 360P, frame per second 25, coding and decoding form H264, code check 732kpbs;
There is the transcoding video resource of resolution 480P, frame per second 25, coding and decoding form H264, code check 1205kpbs.
In the time that video cache system receives transcoding video resource, video cache system is just by these transcoding video resources of buffer memory.
In addition, before S803, also has in embodiments of the present invention a kind of optional mode, that is: this video cache system also needs to video code conversion system application authentication, it is the authentication request that video optimized system is carried generation identification information, and this authentication request is sent to video code conversion system, if while receiving the response message of video code conversion system failed authentication, stop transcoding task, if the success of video cache system authentication, continues to carry out transcoding task.
In the embodiment of the present invention in the time that in video cache system, the source video resource of buffer memory has been accessed frequently, the source video attribute information of video cache system acquisition source video resource, and at least one object video attribute information corresponding to source video resource, and by source video resource, source video attribute information, at least one object video attribute information is sent to video code conversion system, then at least one transcoding video resource that receiver, video trans-coding system returns, the code check of this transcoding video resource is less than the code check of source video resource, final video caching system is by buffer memory transcoding video resource, so also promote the utilance of video cache system.
Embodiment seven:
A kind of video code conversion system in the corresponding embodiment of the present invention three, also provides a kind of video transcoding method in the embodiment of the present invention, be illustrated in figure 9 the flow chart of a kind of video transcoding method in the embodiment of the present invention, and the method comprises:
S901, the source video resource for the treatment of transcoding and corresponding source video attribute information and at least one the object video attribute information of described source video resource that receiver, video caching system sends;
In the time that video cache system need to be carried out video code conversion, video code conversion system just will receive the required information of transcoding of video cache system transmission, wherein, the video attribute information that object video attribute information has after for described source video resource transcoding, and in the video attribute information of source, at least comprise the code check of source video resource, in object video attribute information, comprised the code check that the transcoding video resource after transcoding has.
S902, based on described source video attribute information and described at least one object video attribute information, is at least one transcoding video resource by described source video resource transcoding;
In this step, video code conversion system first can receive video cache system send for applying for the transcoding request of transcoding resource, source video attribute information and at least one object video attribute information in this transcoding request, are carried, in source video attribute information and object video attribute information, all comprised code check, therefore video code conversion system determines in current video trans-coding system whether have enough transcoding resources to carry out transcoding by the object code check in the source code rate based on source video attribute information and object video attribute information.
If when video code conversion system has enough transcoding resources to carry out transcoding, video code conversion system will send the successful response message of transcoding resource bid to video cache system, the source video resource that then this video code conversion system sends receiver, video caching system.
After video code conversion system acquisition arrives source video resource, video code conversion system is by the object code check in source code rate and the each object video attribute information obtained in the video attribute information of source, according to each object code check, it is at least one transcoding video resource with object code check by source video resource transcoding, one of them transcoding video resource has a code check, and the object code check that each transcoding video resource has is different, therefore different transcoding video resources can be supported under different network congestion states and transmit.
S903, is sent to video cache system by least one transcoding video resource.
The source video resource that in the embodiment of the present invention, video code conversion system sends based on video cache system, source video attribute information and at least one object video attribute information, be at least one transcoding video resource by source video resource transcoding, each transcoding video resource has an object video attribute information, such as be multiple transcoding video resources with different code checks by source video resource transcoding, final video trans-coding system is sent to video cache system by all transcoding video resources and carries out buffer memory, therefore realized the transcoding of the many video attributes of source video resource by video code conversion system, and video code conversion system also realizes the video code conversion of various code rate.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (19)

1. a video optimized system, is characterized in that, comprising:
Determination module, for in the time receiving the access request of source video resource of client transmission, determine in video cache system and be cached with at least one transcoding video resource that requested described source video resource is corresponding, wherein, transcoding video resource is supported under network congestion state and transmits;
Processing module, for determining and be supported in the video resource transmitting under current network congestion state at source video resource and described at least one transcoding video resource;
Sending module, for being sent to described client by the described video resource of determining.
2. the system as claimed in claim 1, it is characterized in that, described processing module, specifically for obtaining code check corresponding to each video resource difference in source video resource and described at least one transcoding video resource, in each code check obtaining, determine and meet the code check transmitting under current network congestion state, based on the code check of determining, in described source video resource and described at least one transcoding resource, determine the video resource that described code check is corresponding, as being supported in the video resource transmitting under front network congestion state.
3. a video cache system, is characterized in that, comprising:
Administration module, for obtaining the source video attribute information of the source video resource of buffer memory, according to the source video attribute information of described source video resource, determine at least one object video attribute information, the video attribute information of described object video attribute information for the object video obtaining after the video resource transcoding of described source is had;
Sending module, for being sent to video code conversion system by described source video resource and described source video attribute information, described at least one object video attribute information;
Cache module, for receive that described video code conversion system returns according to described source video attribute information and described at least one object video attribute information, described source video resource is carried out at least one transcoding video resource that transcoding processing obtains, and described at least one the transcoding video resource receiving is carried out to buffer memory, wherein, different transcoding video resources is supported under different network congestion states and transmits.
4. system as claimed in claim 3, it is characterized in that, described administration module, characterize specifically for obtaining the grading parameter that user grades to the quality of video resource, determine the video attribute information that is more than or equal to sign video resource attribute corresponding to the grading parameter of threshold value, and using the video attribute information of determining as object video attribute information.
5. system as claimed in claim 3, it is characterized in that, the source code rate that comprises described source video resource in the described source video attribute information that described administration module obtains, in each object video attribute information, all comprise the object code check that is less than described source code rate, and the object code check comprising in each object video attribute information is different.
6. system as claimed in claim 3, is characterized in that, described administration module, and also, for obtaining total access request number of the each video resource of all video resources of buffer memory, the video resource that total access request number is exceeded to threshold value is as described source video resource.
7. system as claimed in claim 3, it is characterized in that, described administration module, also for send the authentication request of the identification information that carries caching system to described trans-coding system, receives the response message that the described video cache system of sign authentication that described video code conversion system returns is passed through.
8. system as claimed in claim 3, it is characterized in that, described administration module, also for send the transcoding request of application transcoding resource to described video code conversion system, described source video attribute information and described at least one object video attribute information in described transcoding request, are carried, in the time receiving the successful response message of sign transcoding resource bid that described video code conversion system returns, described source video resource is sent to described video code conversion system.
9. a video code conversion system, is characterized in that, comprising:
Transcoding administration module, the source video resource for the treatment of transcoding and corresponding source video attribute information and at least one the object video attribute information of described source video resource that send for receiver, video caching system, the video attribute information that described object video attribute information has after for described source video resource transcoding;
Transcoding module, be used for based on described source video attribute information and described at least one object video attribute information, be at least one transcoding video resource by described source video resource transcoding, wherein, different transcoding video resources is supported under different network congestion states and transmits;
Sending module, for being sent to described video cache system by described at least one transcoding video resource.
10. system as claimed in claim 9, it is characterized in that, described transcoding module, specifically for obtaining the object code check comprising in the source code rate that comprises in the video attribute information of described source and each object attribute information, according to each object code check, be at least one transcoding video resource with object code check by described source video resource transcoding, wherein, a transcoding video resource has an object code check, and the object code check that each transcoding video resource has is different.
11. systems as claimed in claim 9, it is characterized in that, described transcoding administration module, also for receiving the authentication information of the identification information that carries described caching system that described video cache system sends, in the time that described identification information mates with default identification information, send and characterize the response message that described video cache system authentication is passed through to described video cache system.
12. systems as claimed in claim 9, it is characterized in that, described transcoding administration module, also for receive that described video cache system sends for applying for the transcoding request of transcoding resource, in described transcoding request, carry described source video attribute information and at least one object video attribute information, return to the successful response message of transcoding resource bid to described video cache system, and receive the described source video resource that described video cache system sends.
13. 1 kinds of method for optimizing videos, is characterized in that, comprising:
In the time receiving the access request of source video resource of client transmission, determine in video cache system and be cached with at least one transcoding video resource that requested described source video resource is corresponding, wherein, transcoding video resource is supported under network congestion state and transmits;
In source video resource and described at least one transcoding video resource, determine the video resource transmitting under network congestion state before being supported in;
The described video resource of determining is sent to described client.
14. methods as claimed in claim 13, is characterized in that, determine the video resource transmitting under network congestion state before being supported in source video resource and described at least one transcoding video resource, comprising:
Obtain code check corresponding to each video resource difference in source video resource and described at least one transcoding resource;
In each code check obtaining, determine and meet the code check transmitting under current network congestion state;
Based on the code check of determining, in described source video resource and described at least one transcoding resource, determine the video resource that described code check is corresponding, as being supported in the video resource transmitting under front network congestion state.
15. 1 kinds of video cache methods, is characterized in that, comprising:
Obtain the source video attribute information of the source video resource of buffer memory;
According to the source video attribute information of described source video resource, determine at least one object video attribute information, the video attribute information of described object video attribute information for the object video obtaining after the video resource transcoding of described source is had;
Described source video resource and described source video attribute information, described at least one object video attribute information are sent to video code conversion system;
Receive that described video code conversion system returns according to described source video attribute information and described at least one object video attribute information, described source video resource is carried out at least one transcoding video resource that transcoding processing obtains, wherein, different transcoding video resources is supported under different network congestion states and transmits; And described at least one the transcoding video resource receiving is carried out to buffer memory.
16. methods as claimed in claim 15, it is characterized in that, the source code rate that comprises described source video resource in the video attribute information of described source, in each object video attribute information, all comprise the object code check that is less than described source code rate, and the object code check comprising in each object video attribute information is different.
17. methods as claimed in claim 15, is characterized in that, before obtaining the source video attribute information of the source video resource of buffer memory, also comprise:
Obtain total access request number of each video resource in all video resources of buffer memory;
The video resource that total access request number is exceeded to threshold value is as described source video resource.
18. methods as claimed in claim 15, is characterized in that, before described source video resource and described source video attribute information, described at least one object video attribute information are sent to video code conversion system, also comprise:
Send the authentication request of the identification information that carries video cache system to described video code conversion system;
Receive the response message that the described video cache system of sign authentication that described video code conversion system returns is passed through.
19. methods as claimed in claim 15, is characterized in that, the source video attribute information of described source video resource and described source video resource, at least one object video attribute information are sent to video code conversion system, comprising:
Send the transcoding request of application transcoding resource to described video code conversion system, in described transcoding request, carried described source video attribute information and described at least one object video attribute information;
In the time receiving the successful response message of sign transcoding resource bid that described video code conversion system returns, described source video resource is sent to described video code conversion system.
CN201410052362.5A 2014-02-14 2014-02-14 System and method for optimizing video Pending CN103813181A (en)

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