CN102761774B - Method and system for dynamically regulating transcoded bit stream - Google Patents
Method and system for dynamically regulating transcoded bit stream Download PDFInfo
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- CN102761774B CN102761774B CN201210226726.8A CN201210226726A CN102761774B CN 102761774 B CN102761774 B CN 102761774B CN 201210226726 A CN201210226726 A CN 201210226726A CN 102761774 B CN102761774 B CN 102761774B
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Abstract
The invention provides a method and a system for dynamically regulating a transcoded bit stream. The method comprises the following steps that: a client acquires a file to be transcoded and sends transcoding information of the file to be transcoded to a server; the server receives the transcoding information and a current video file transcoded bit stream radix and a current audio file transcoded bit stream radix according to a network actual bandwidth and a network bandwidth and transcoded bit stream radix comparison table; the server determines the transcoded bit stream of the file to be transcoded according to a transcoded bit stream regulating strategy and sends the determined transcoded bit stream of the file to be transcoded to the client; and the client transcodes the file to be transcoded according to the received transcoded bit stream.
Description
Technical field
The invention belongs to audio frequency and video technical field, relate in particular to a kind of method and system of dynamic adjustment transcoding code stream.
Background technology
Along with the fast development of audio frequency and video technology, user is also more and more higher to the online shared requirement of audio frequency and video.At present, if active user's network condition is very poor, but the transcoding code stream arranging is when very high, can cause the audio-video document after transcoding very large, share audio-video document thereby affect between user, cause audio-video document to be shared not smooth, so, serious checking affects user experience.
Summary of the invention
The invention provides a kind of method and system of dynamic adjustment transcoding code stream, to address the above problem.
The invention provides a kind of method of dynamic adjustment transcoding code stream.Said method comprises the following steps: client is obtained and treated transcoding file, and the transcoding information for the treatment of transcoding file is sent to server; Server receives transcoding information, and according to the network actual bandwidth of client and the network bandwidth and the transcoding code stream radix table of comparisons, obtains current video file transcoding code stream radix and audio file transcoding code stream radix; Server is determined the transcoding code stream for the treatment of transcoding file according to transcoding code stream adjustment strategy, and the transcoding code stream for the treatment of transcoding file of determining is sent to client; Client is treated transcoding file according to the transcoding code stream transcoding receiving.
The present invention also provides a kind of system of dynamic adjustment transcoding code stream, comprises client and server.Client connection server.Server comprises receiver module, enquiry module and control module.Receiver module connects enquiry module, and control module connects enquiry module.Wherein, client, treats transcoding file for obtaining, and the transcoding information for the treatment of transcoding file is sent to server.Receiver module, for receiving transcoding information.Enquiry module, for according to the network actual bandwidth of client and the network bandwidth and the transcoding code stream radix table of comparisons, obtains current video file transcoding code stream radix and audio file transcoding code stream radix.Control module, for determine the transcoding code stream for the treatment of transcoding file according to transcoding code stream adjustment strategy, and is sent to client by the transcoding code stream for the treatment of transcoding file of determining.Client, also for treating transcoding file according to the transcoding code stream transcoding receiving.
Compared to prior art, according to the method and system of dynamic adjustment transcoding code stream provided by the invention, server obtains after the transcoding information of transcoding file from client, according to the network actual bandwidth of client and the network bandwidth and the transcoding code stream radix table of comparisons, obtain current video file transcoding code stream radix and audio file transcoding code stream radix, afterwards, determine according to transcoding code stream adjustment strategy the transcoding code stream for the treatment of transcoding file.Client is treated transcoding file according to the definite transcoding code stream of server and is carried out transcoding.So, treat the transcoding code stream of transcoding file according to the real network Bandwidth Dynamic adjustment of client, to avoid making audio-video document share slack problem because the audio-video document after transcoding is excessive, so, make the audio-video document broadcasting after transcoding more smooth, thereby improve user experience.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Figure 1 shows that the flow chart of the method for the dynamic adjustment transcoding code stream that preferred embodiment according to the present invention provides;
Figure 2 shows that the schematic diagram of the system of the dynamic adjustment transcoding code stream that preferred embodiment according to the present invention provides.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
Figure 1 shows that the flow chart of the method for the dynamic adjustment transcoding code stream that preferred embodiment according to the present invention provides.The method of the dynamic adjustment transcoding code stream that as shown in Figure 1, preferred embodiment of the present invention provides comprises step 101 ~ 104.
In step 101, client is obtained and is treated transcoding file, and the described transcoding information for the treatment of transcoding file is sent to server.For example, user can select local audio-video document as treating transcoding file, after transcoding, shares for other users.User place client is obtained after transcoding file, obtains the transcoding information for the treatment of transcoding file.Wherein, transcoding information for example comprise client network actual bandwidth, described in treat associated code stream information of transcoding file etc.In this, the network actual bandwidth of client is got client and is obtained the network bandwidth in the time of transcoding file.But the present invention is not limited thereto.
In step 102, described server receives described transcoding information, and according to the network actual bandwidth of described client and the network bandwidth and the transcoding code stream radix table of comparisons, obtains current video file transcoding code stream radix and audio file transcoding code stream radix.Wherein, video file transcoding code stream radix comprises video code conversion code stream radix and audio frequency transcoding code stream radix.
Particularly, server obtains the network actual bandwidth of client from the transcoding information receiving.In addition the server stores network bandwidth and the transcoding code stream radix table of comparisons.Described table of comparisons example is as shown in the table.
| The network bandwidth | Video file transcoding code stream radix | Audio file transcoding code stream radix |
| <1Mbps | 256kb/s，16kb/s | 64kb/s |
| >=1Mbps and≤2Mbps | 512kb/s，32kb/s | 128kb/s |
| > 2Mbps and≤4Mbps | 516kb/s，36kb/s | 132kb/s |
| > 4Mbps and≤6Mbps | 520kb/s，40kb/s | 136kb/s |
| >6Mbps | 528kb/s，48kb/s | 144kb/s |
In the present embodiment, server obtains video file transcoding code stream radix and audio file transcoding code stream radix according to the network actual bandwidth of the client receiving with reference to upper table.For example, if the current network actual bandwidth of the client that server obtains is 1.6Mbps, it is known that server is gone up table by inquiry, and video code conversion code stream radix is 512kb/s, audio frequency transcoding code stream radix is 32kb/s, and audio file transcoding code stream radix is 128kb/s.
In step 103, described in described server is definite according to transcoding code stream adjustment strategy, treat the transcoding code stream of transcoding file, and treat that the transcoding code stream of transcoding file is sent to described client described in determining.Particularly, server lookup obtains after current video file transcoding code stream radix and audio file transcoding code stream radix, treat the type of transcoding file according to the transcoding information judgement for the treatment of transcoding file from client, and determine transcoding code stream according to transcoding code stream adjustment strategy for the dissimilar transcoding file for the treatment of.Wherein, server for example treats that by parsing the suffix of transcoding file judges the type for the treatment of transcoding file.But the present invention is not limited thereto.In other embodiment, client can first judge the type for the treatment of transcoding file, and the transcoding information that sends of client treats the type information of transcoding file described in for example can comprising, server directly knows by described transcoding information the type for the treatment of transcoding file.
In the present embodiment, described transcoding code stream adjustment strategy is: if described in treat that transcoding file is audio file, determine that the transcoding code stream of described audio file is described audio file transcoding code stream radix; If described in treat that transcoding file is video file, the audio code stream that the audio frequency transcoding code stream of determining described video file is described video file and the smaller value of described audio frequency transcoding code stream radix, the smaller value of the video code flow that the video code conversion code stream of determining described video file is described video file and described video code conversion code stream radix.
For example, if the transcoding file for the treatment of that client is obtained is " .mp3 again turns one's head ", the file suffixes " .mp3 " that server carries according to transcoding information, judges and treats that transcoding file is audio file.In this, taking the current network actual bandwidth of client in step 102 as 1.6Mbps is as example, now, server is tabled look-up known, and audio file transcoding code stream radix is 128kb/s.So, server can be determined and treats that the transcoding code stream of transcoding file " .mp3 again turns one's head " is 128kb/s.
In the present embodiment, if described in treat that transcoding file is video file, and described video file carries total code stream information and video code flow information, do not carry audio code stream information, the transcoding information that client sends comprises total code stream information and the video code flow information of the network actual bandwidth of client, described video file, and server is from the total code stream of transcoding acquisition of information and video code flow, and calculates audio code stream, wherein, audio code stream is the difference of total code stream and video code flow.If described in treat that transcoding file is video file, and described video file carries total code stream information and audio code stream information, do not carry video code flow information, the described transcoding information that client sends comprises total code stream information and the audio code stream information of the network actual bandwidth of described client, described video file, described server is from the total code stream of transcoding acquisition of information and audio code stream, and calculate video code flow, wherein, video code flow is the difference of total code stream and audio code stream.If described in treat that transcoding file is video file, and described video file carries total code stream information, do not carry audio code stream information and video code flow information, the described transcoding information that client sends comprises total code stream information of network actual bandwidth and the described video file of described client, described server is from the total code stream of transcoding acquisition of information, and definite audio code stream is current described audio frequency transcoding code stream radix, and calculates video code flow, wherein, video code flow is the difference of total code stream and audio code stream.Wherein, total code stream information of video file, video code flow information and audio code stream information are by video file producer code storage in the time making.If video file producer is not code storage video code flow information or audio code stream information in the time making, client cannot read video code flow or the audio code stream of video file, now, the relation between server sends according to client known code stream information and three kinds of code streams is calculated and is obtained the code stream needing.Wherein, total code stream be audio code stream and video code flow and value, and video file necessarily carries total code stream information.
For example, if the transcoding file for the treatment of that client is obtained is " Kung Fu Panda .rmvb ", the file suffixes " .rmvb " that server carries according to transcoding information judges treats that transcoding file is video file.In this, still, taking the current network actual bandwidth of client in step 102 as 1.6Mbps is as example, now, server is tabled look-up known, and video code conversion code stream radix is 512kb/s, and audio frequency transcoding code stream radix is 32kb/s.Now, if treat, transcoding file carries total code stream information, video code flow information and audio code stream information, client is from treating the total code stream of transcoding file acquisition, video code flow and audio code stream, and above-mentioned three kinds of code streams are sent to server by transcoding information, server from the total code stream of transcoding acquisition of information (for example, 1088kb/s), video code flow (for example, 1024kb/s) and audio code stream (64kb/s).Wherein, video code flow (1024kb/s) is greater than current video code conversion code stream radix (512kb/s), and audio code stream (64kb/s) is greater than current audio frequency transcoding code stream radix (32kb/s).Therefore, adjust strategy according to transcoding code stream, server treats that the video code conversion code stream of transcoding file is current video code conversion code stream radix described in determining, audio frequency transcoding code stream is current audio frequency transcoding code stream radix,, the video code conversion code stream for the treatment of transcoding file is 512kb/s, and audio frequency transcoding code stream is 32kb/s.Afterwards, described definite transcoding code stream is sent to client by server.
In step 104, client is treated transcoding file described in the described transcoding code stream transcoding receiving.Particularly, client is treated transcoding file described in cutting apart according to fundamental unit, and is that each fundamental unit is distributed transcoding thread, and described transcoding thread carries out transcoding according to definite transcoding code stream.For example, if treat, the size of transcoding file " Kung Fu Panda .rmvb " is 50M, taking 10M as fundamental unit, client can will treat that transcoding file division is 5 fundamental units, and distribute 5 threads according to transcoding code stream definite in step 103 (for example to correspond to one by one 5 fundamental units, video code conversion code stream is 512kb/s, and audio frequency transcoding code stream is 32kb/s) carry out transcoding.Wherein, client is for example stored the relevant information of each fundamental unit in digital dictionary mode.Numeral dictionary is for example stored the OPADD of the each fundamental unit after the address of each fundamental unit, corresponding thread, definite transcoding code stream and transcoding etc.Each thread, by after corresponding fundamental unit transcoding, is stored to corresponding OPADD according to the information in digital dictionary by the fundamental unit after transcoding.Wherein, whether all client can judge the transcoding success of each fundamental unit by enquiring digital dictionary, if the failure of the transcoding of certain fundamental unit is redistributed thread and carried out transcoding.When after the equal transcoding success of each fundamental unit, client can merge the audio-video document that transcoding obtains, and exports the audio-video document after transcoding, shares for other users.In this, treat transcoding file by cutting apart, distribute multi-thread concurrent transcoding, thereby improve transcoding efficiency.
The schematic diagram of the system of the dynamic adjustment transcoding code stream providing for preferred embodiment according to the present invention described in Fig. 2.The system of the dynamic adjustment transcoding code stream that as shown in Figure 2, preferred embodiment of the present invention provides comprises client 30 and server 20.Client 30 connection servers 20.Server 20 comprises receiver module 200, enquiry module 201 and control module 203.Receiver module 200 connects enquiry module 201, and control module 203 connects enquiry module 201.Wherein, client 30, treats transcoding file for obtaining, and the transcoding information for the treatment of transcoding file is sent to server 20.Receiver module 200, for receiving transcoding information.Enquiry module 201, for according to the network actual bandwidth of client and the network bandwidth and the transcoding code stream radix table of comparisons, obtains current video file transcoding code stream radix and audio file transcoding code stream radix.Control module 203, for determine the transcoding code stream for the treatment of transcoding file according to transcoding code stream adjustment strategy, and is sent to client 30 by the transcoding code stream for the treatment of transcoding file of determining.Client 30, also for treating transcoding file according to the transcoding code stream transcoding receiving.
In the present embodiment, client 30 also comprises cuts apart module 301 and transcoding module 302.Cut apart module 301 and connect transcoding module 302.Cut apart module 301, treat transcoding file for cutting apart according to fundamental unit, and be that each fundamental unit is distributed transcoding module.Transcoding module 302, carries out transcoding for the transcoding code stream according to definite.In this, the present invention does not limit the number of transcoding module.The specific operation process of the system of the dynamic adjustment transcoding code stream that in addition, the present embodiment provides is with described in said method, therefore repeat no more in this.
In sum, the method and system of the dynamic adjustment transcoding code stream that preferred embodiment provides according to the present invention, server obtains after the transcoding information of transcoding file from client, according to the network actual bandwidth of client and the network bandwidth and the transcoding code stream radix table of comparisons, obtain current video file transcoding code stream radix and audio file transcoding code stream radix, afterwards, determine according to transcoding code stream adjustment strategy the transcoding code stream for the treatment of transcoding file.Client is treated transcoding file according to the definite transcoding code stream of server and is carried out transcoding.So, treat the transcoding code stream of transcoding file according to the real network Bandwidth Dynamic adjustment of client, to avoid making audio-video document share slack problem because the audio-video document after transcoding is excessive, so, make the audio-video document broadcasting after transcoding more smooth, thereby improve user experience.In addition, in preferred embodiment of the present invention, client will treat that transcoding file division is multiple fundamental units, and carry out transcoding for each fundamental unit thread, thereby realize multi-thread concurrent transcoding, so, improve transcoding efficiency.
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 of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a method of dynamically adjusting transcoding code stream, is characterized in that, comprises the following steps:
Client is obtained and is treated transcoding file, and the described transcoding information for the treatment of transcoding file is sent to server;
Described server receives described transcoding information, and according to the network actual bandwidth of described client and the network bandwidth and the transcoding code stream radix table of comparisons, obtains current video file transcoding code stream radix and audio file transcoding code stream radix;
Described server is treated the transcoding code stream of transcoding file described in determining according to transcoding code stream adjustment strategy, and treats that the transcoding code stream of transcoding file is sent to described client described in determining;
Described client is treated transcoding file described in the described transcoding code stream transcoding receiving;
Wherein, described video file transcoding code stream radix comprises video code conversion code stream radix and audio frequency transcoding code stream radix;
Described transcoding code stream adjustment strategy is: if described in treat that transcoding file is audio file, determine that the transcoding code stream of described audio file is described audio file transcoding code stream radix; If described in treat that transcoding file is video file, the audio code stream that the audio frequency transcoding code stream of determining described video file is described video file and the smaller value of described audio frequency transcoding code stream radix, the smaller value of the video code flow that the video code conversion code stream of determining described video file is described video file and described video code conversion code stream radix.
2. method according to claim 1, it is characterized in that, if described in treat that transcoding file is video file, and described video file carries total code stream information and video code flow information, do not carry audio code stream information, the described transcoding information that described client sends comprises total code stream information and the video code flow information of the network actual bandwidth of described client, described video file, described server is from the total code stream of described transcoding acquisition of information and video code flow, and calculate audio code stream, wherein, audio code stream is the difference of total code stream and video code flow.
3. method according to claim 1, it is characterized in that, if described in treat that transcoding file is video file, and described video file carries total code stream information and audio code stream information, do not carry video code flow information, the described transcoding information that described client sends comprises total code stream information and the audio code stream information of the network actual bandwidth of described client, described video file, described server is from the total code stream of described transcoding acquisition of information and audio code stream, and calculate video code flow, wherein, video code flow is the difference of total code stream and audio code stream.
4. method according to claim 1, it is characterized in that, if described in treat that transcoding file is video file, and described video file carries total code stream information, do not carry audio code stream information and video code flow information, the described transcoding information that described client sends comprises total code stream information of network actual bandwidth and the described video file of described client, described server is from the total code stream of described transcoding acquisition of information, and definite audio code stream is current described audio frequency transcoding code stream radix, and calculate video code flow, wherein, video code flow is the difference of total code stream and audio code stream.
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| CN103677908A (en) * | 2013-12-04 | 2014-03-26 | 乐视网信息技术（北京）股份有限公司 | Method and system for updating transcoding service |
| CN108540807B (en) * | 2018-02-28 | 2019-05-31 | 北京达佳互联信息技术有限公司 | The method, apparatus and terminal of video file transcoding |
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| CN101534434A (en) * | 2009-04-15 | 2009-09-16 | 深圳市融创天下科技发展有限公司 | Code flow dynamic adjusting method in video transmission |
| CN101640627A (en) * | 2008-07-29 | 2010-02-03 | 优必达科技有限公司 | Multi-medium data crossfire system for transmitting and method thereof |
| CN101945278A (en) * | 2010-09-15 | 2011-01-12 | 中国科学院深圳先进技术研究院 | Video self-adaptive transcoding method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080263621A1 (en) * | 2007-04-17 | 2008-10-23 | Horizon Semiconductors Ltd. | Set top box with transcoding capabilities |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640627A (en) * | 2008-07-29 | 2010-02-03 | 优必达科技有限公司 | Multi-medium data crossfire system for transmitting and method thereof |
| CN101534434A (en) * | 2009-04-15 | 2009-09-16 | 深圳市融创天下科技发展有限公司 | Code flow dynamic adjusting method in video transmission |
| CN101945278A (en) * | 2010-09-15 | 2011-01-12 | 中国科学院深圳先进技术研究院 | Video self-adaptive transcoding method and system |
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Address after: Suzhou City, Jiangsu province 215121 Fengting Avenue Suzhou Industrial Park No. 666 Weiting Intelligent Industrial Park Building 8 Patentee after: Kuo Di education and science company limited Address before: Suzhou City, Jiangsu province 215121 Fengting Avenue Suzhou Industrial Park No. 666 Weiting Intelligent Industrial Park Building 8 Patentee before: Suzhou Kuodi Network Technology Co., Ltd. |
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