CN102364935B - Audio and video transmission method of network conference and system thereof - Google Patents
Audio and video transmission method of network conference and system thereof Download PDFInfo
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- CN102364935B CN102364935B CN 201110366218 CN201110366218A CN102364935B CN 102364935 B CN102364935 B CN 102364935B CN 201110366218 CN201110366218 CN 201110366218 CN 201110366218 A CN201110366218 A CN 201110366218A CN 102364935 B CN102364935 B CN 102364935B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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Abstract
The invention provides an audio and video transmission method of a network conference and a system thereof. The method comprises the following steps that: a conference initiator acquires different types of receiving parameters of a conference participant from a server and the number of the each type of the receiving parameters is more than one; the conference initiator calculates through weighting so as to obtain the different types of the transmission parameters according to the receiving parameters and corresponding weight and the different types of the transmission parameters possess a priority order; the conference initiator transmits the audio and video data to the conference participant through the server according to the transmission parameter with a higher priority; when a variance ratio of the receiving parameters of the conference participant to the transmission parameters is larger than or equal to a preset value and the number of the conference participant whose variance ratio is larger than or equal to the preset value is greater than or equal to a preset number, the conference initiator transmits the audio and video data to the conference participant through the server according to the transmission parameters with a next level in the priority order.
Description
Technical field
The invention belongs to the audio frequency and video technical field, relate in particular to a kind of Web conference audio video transmission method and system.
Background technology
Along with the development of Internet technology, simple voice or written communication can't satisfy people's communication demand, and the demand of Web conference strengthens gradually.Yet in many people Web conference, when the transmission tone video media-data, due to the delay jitter of network service, the difference of client operational environment can not adapt to various network environment and customer demand with changeless mode transmission tone video data.
Summary of the invention
The invention provides a kind of Web conference audio video transmission method and system, to address the above problem.
The invention provides a kind of Web conference audio video transmission method.Said method comprises the following steps: the meeting originating end obtains from server the dissimilar reception parameter that meeting participates in end, and the reception parameter of each type is a plurality of; The meeting originating end obtain dissimilar transformation parameter by weighted calculation, and dissimilar transformation parameter has priority orders according to receiving parameter and respective weights thereof; The meeting originating end passes through server according to the higher transformation parameter of priority audio, video data is transferred to meeting participation end; If the reception parameter of meeting participation end and the variance rate of transformation parameter are more than or equal to preset value, and the number that variance rate participates in end more than or equal to the meeting of preset value is during more than or equal to preset number, and the meeting originating end passes through server transmission tone video data to meeting according to the transformation parameter of next grade in priority orders and participates in end.
The present invention also provides a kind of Web conference audio-video transmission system.Said system comprises that meeting originating end, server and meeting participate in end.Meeting originating end connection server, server connect meeting and participate in end.Wherein, the meeting originating end is used for obtaining from server the dissimilar reception parameter that meeting participates in end, and the number of the reception parameter of each type is a plurality of.The meeting originating end is used for obtain dissimilar transformation parameter by weighted calculation, and dissimilar transformation parameter having priority orders according to receiving parameter and respective weights thereof.The meeting originating end is used for passing through server according to the higher transformation parameter of priority audio, video data is transferred to meeting participation end.If the reception parameter of meeting participation end and the variance rate of transformation parameter are more than or equal to preset value, and the number that described variance rate participates in end more than or equal to the meeting of preset value is during more than or equal to preset number, and the meeting originating end passes through server transmission tone video data to meeting according to the transformation parameter of next grade in priority orders and participates in end.
Compared to prior art, according to Web conference audio video transmission method and system provided by the invention, the meeting originating end obtains transformation parameter according to receiving parameter and respective weights thereof by weighted calculation, and the meeting originating end passes through server according to the higher transformation parameter of priority audio, video data is transferred to meeting participation end.In addition, when the transformation parameter that adopts when the meeting originating end did not satisfy meeting and participates in the corresponding condition of acceptance of end, the meeting originating end can participate in end according to the transformation parameter of next grade in priority orders transmission tone video data to meeting again.So, the accommodation in the audio, video data transmitting procedure be can realize, thereby different network environments and customer demand satisfied.And, for the Web conference of large contingent, adopt the aforesaid way transmission tone video data can saving resource, raise the efficiency.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Figure 1 shows that the flow chart of the Web conference audio video transmission method that preferred embodiment according to the present invention provides;
Figure 2 shows that the schematic diagram of the Web conference audio-video transmission system that preferred embodiment according to the present invention provides.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
Figure 1 shows that the flow chart of the Web conference audio video transmission method that preferred embodiment according to the present invention provides.As shown in Figure 1, the Web conference audio video transmission method that provides of preferred embodiment of the present invention comprises step 101～104.
In step 101, the meeting originating end obtains from server the dissimilar reception parameter that meeting participates in end, and the reception parameter of each type is a plurality of.Wherein, the type of reception parameter comprises resolution, encoding and decoding speed and the network bandwidth.In this, the number that meeting participates in end is at least two.Yet the present invention is not construed as limiting this.
Particularly, if when the meeting originating end needed to participate in end transmission audio, video data to meeting, server can first participate in end from each meeting obtain dissimilar reception parameter.Participate in end A～C as example take three meetings, server can obtain resolution m1*n1, encoding and decoding speed b1 and the network bandwidth d1 that meeting participates in end A, meeting participates in resolution m2*n2, encoding and decoding speed b2 and the network bandwidth d2 of end B, and meeting participates in resolution m3*n3, encoding and decoding speed b3 and the network bandwidth d3 of end C.After server obtained dissimilar reception parameter, server for example can transfer to the meeting originating end with above-mentioned reception parameter.The present invention not Limited service device obtains the mode that receives parameter.
In step 102, the meeting originating end obtain dissimilar transformation parameter by weighted calculation, and dissimilar transformation parameter has priority orders according to receiving parameter and respective weights thereof.In this, the predeterminable dissimilar reception parameter area of meeting originating end and the table of comparisons of weight, for example resolving range and the weight table of comparisons, encoding and decoding velocity interval and the weight table of comparisons and network bandwidth scope and the weight table of comparisons.
In the present embodiment, for resolution m*n, m and n have respectively the contrast relationship (for example shown in following table) of its scope and weight.According to the scope of m and n and corresponding weight thereof, can obtain m ' and n ' by weighted calculation respectively, that is, be m ' * n ' as the resolution of transformation parameter.
| m | Weight | n | Weight |
| ＜500 | 10％ | ＜500 | 10％ |
| 〉=500 and＜800 | 30％ | 〉=500 and＜800 | 50％ |
| 〉=800 and＜1200 | 50％ | 〉=800 and＜1200 | 30％ |
| ≥1200 | 10％ | ≥1200 | 10％ |
For example, if meeting participates in resolution m1*n1=600*450, the resolution m2*n2=800*600 that meeting participates in end B, the resolution m3*n3=640*360 that meeting participates in end C of end A, can calculate acquisition: m '=600*30%+800*50%+640*30%=772, n '=450*10%+600*50%+360*10%=381 according to weight corresponding to upper table.That is, can be used as resolution m ' the * n ' of transformation parameter=772*381.Yet the present invention is not limited thereto.In practical application, can set as required resolving range and corresponding weight thereof.
In the present embodiment, the scope of encoding and decoding speed and the contrast relationship of weight are for example shown in following table.
| Encoding and decoding speed b (unit: kbps) | Weight |
| ＜200 | 20％ |
| 〉=200 and＜500 | 30％ |
| 〉=500 and＜700 | 40％ |
| ≥700 | 10％ |
For example, if meeting participates in the encoding and decoding speed b1=300kbps of end A, meeting participates in the encoding and decoding speed b2=400kbps of end B, meeting participates in the encoding and decoding speed b3=550kbps of end C, can calculate acquisition: b '=300*30%+400*30%+550*40%=430 according to weight corresponding to upper table.That is, can be used as the encoding and decoding speed b ' of transformation parameter=430kbps.Yet the present invention is not limited thereto.In practical application, can set as required encoding and decoding scope and corresponding weight thereof.
In the present embodiment, the scope of the network bandwidth and the contrast relationship of weight are for example shown in following table.
| Network bandwidth d (unit: Mbps) | Weight |
| ＜2 | 20％ |
| 〉=2 and＜5 | 50％ |
| 〉=5 and＜7 | 20％ |
| ≥7 | 10％ |
For example, if meeting participates in the network bandwidth d1=3Mbps of end A, meeting participates in the network bandwidth d2=4Mbps of end B, and meeting participates in the network bandwidth d3=1Mbps of end C, can calculate acquisition: d '=3*50%+4*50%+1*20%=3.7 according to weight corresponding to upper table.That is, can be used as the network bandwidth d ' of transformation parameter=3.7Mbps.Yet the present invention is not limited thereto.In practical application, setting network bandwidth range and corresponding weight thereof as required.
In step 103, the meeting originating end passes through server according to the higher transformation parameter of priority audio, video data is transferred to meeting participation end.Wherein, when transmitting video data, the priority of transformation parameter is from height to low resolution, encoding and decoding speed, the network bandwidth of being followed successively by.When the transmission of audio data, the priority of transformation parameter is from height to low encoding and decoding speed, the network bandwidth of being followed successively by.In other words, when transmitting video data, preferentially adopt resolution as transformation parameter; When the transmission of audio data, preferentially adopt encoding and decoding speed as transformation parameter.
In step 104, if the reception parameter of meeting participation end and the variance rate of transformation parameter are more than or equal to preset value, and the data that variance rate participates in end more than or equal to the meeting of preset value are during more than or equal to preset number, and the meeting originating end passes through server transmission tone video data to meeting according to the transformation parameter of next grade in priority orders and participates in end.Wherein, the transformation parameter of each type has corresponding preset value with the variance rate that receives parameter.Meeting participates in end can store preset value and preset number, and the dissimilar reception parameter of different meetings participation end can be different from the preset value of the variance rate of transformation parameter.For example, the preset value of variance rate that meeting participates in the resolution of end A is 0.1, and the preset value of variance rate that meeting participates in the resolution of end B is 0.07, and the preset value of variance rate that meeting participates in the resolution of end C is 0.15.Yet the present invention is not construed as limiting this.In other embodiment, the dissimilar reception parameter that different meetings participates in holding can be consistent with the preset value of the variance rate of transformation parameter.For example, the preset value of the variance rate of the resolution of meeting participation end A～C is 0.4.In practical application, can set as required corresponding value.
In this, describe as an example of transmitting video data example.By above-mentioned giving an example as can be known, the meeting originating end first participates in end A～C according to resolution 772*381 transmitting video data to meeting.Therefore, meeting participates in the reception parameter of end A and the variance rate a1=|600*450-772*381| of transformation parameter/(600*450)=0.089＜0.1 (preset value of the variance rate of resolution); Meeting participates in the reception parameter of end B and the variance rate a2=|800*600-772*381| of transformation parameter/(800*600)=0.387＞0.07 (preset value of the variance rate of resolution); Meeting participates in the reception parameter of end C and the variance rate a3=|640*360-772*381| of transformation parameter/(640*360)=0.171＞0.15 (preset value of the variance rate of resolution).In this, what meeting participated in end adds up to 3, and the number that the meeting that do not meet preset value of the variance rate of resolution participates in end is 2, and above-mentioned incongruent number equals preset number (2).At this moment, the meeting originating end can participate in end B and C transmitting video data for meeting according to the transformation parameter (for example, encoding and decoding speed) of next grade in priority orders.In addition, if the preset value of the variance rate of the resolution of meeting participation end A～C is 0.4, the variance rate of the resolution of meeting participation end A～C all satisfies condition, and the meeting originating end need not transmitting video data again.
In this, if the meeting originating end is that meeting participates in end B and C transmitting video data again according to above-mentioned encoding and decoding speed, by above-mentioned for example as can be known, can be used as the encoding and decoding speed b ' of transformation parameter=430kbps.Therefore, meeting participates in the reception parameter of end B and variance rate a2=|430-400|/400=0.075＜0.1 (preset value of the variance rate of encoding and decoding speed) of transformation parameter; Meeting participates in the reception parameter of end C and variance rate a3=|430-550|/550=0.22＜0.3 (preset value of the variance rate of encoding and decoding speed) of transformation parameter.At this moment, meeting participates in holding B, C all to satisfy condition of acceptance.Yet, if participating in end, meeting still has the situation that does not satisfy preset value, the meeting originating end can participate in the end transmitting video data for meeting according to the transformation parameter (for example, the network bandwidth) of next grade in priority orders.
In addition, about the transmission means of the voice data transmission means with video data, therefore repeat no more in this.
Figure 2 shows that the schematic diagram of the Web conference audio-video transmission system that preferred embodiment according to the present invention provides.As shown in Figure 2, the Web conference audio-video transmission system that provides of preferred embodiment of the present invention comprises that meeting originating end 20, server 21 and meeting participate in end.In this, participate in end 22a～22c as example take three meetings.Yet the present invention does not do any restriction to this.
In the present embodiment, meeting originating end 20 connection servers 21, server 21 connect meeting and participate in end 22a～22c.Meeting originating end 20 is used for obtaining from server 21 the dissimilar reception parameter that meeting participates in end 22a～22c, and the number of the reception parameter of each type is a plurality of.Meeting originating end 20 is used for obtain dissimilar transformation parameter by weighted calculation, and dissimilar transformation parameter having priority orders according to receiving parameter and respective weights thereof.Meeting originating end 20 is used for passing through server 21 according to the higher transformation parameter of priority audio, video data is transferred to meeting participation end 22a～22c.If meeting (for example participates in end, meeting participation end 22a) reception parameter and the variance rate of described transformation parameter are more than or equal to preset value, and the number that described variance rate participates in end more than or equal to the meeting of described preset value is during more than or equal to preset number, and meeting originating end 20 passes through server 21 transmission tone video datas to meeting according to the transformation parameter of next grade in priority orders and participates in end 22a.Specific operation process about said system is described with aforementioned method, therefore repeat no more in this.
In sum, the Web conference audio video transmission method and system that preferred embodiment provides according to the present invention, the meeting originating end obtains transformation parameter according to receiving parameter and respective weights thereof by weighted calculation, and the meeting originating end passes through server according to the higher transformation parameter of priority audio, video data is transferred to meeting participation end.In addition, when the transformation parameter that adopts when the meeting originating end did not satisfy meeting and participates in the corresponding condition of acceptance of end, the meeting originating end can participate in end according to the transformation parameter of next grade in priority orders transmission tone video data to meeting again.So, the accommodation in the audio, video data transmitting procedure be can realize, thereby different network environments and customer demand satisfied.And, for the Web conference of large contingent, adopt the aforesaid way transmission tone video data can saving resource, raise the efficiency.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a Web conference audio video transmission method, is characterized in that, comprises the following steps:
The meeting originating end obtains from server the dissimilar reception parameter that meeting participates in end, and the reception parameter of each type is a plurality of;
Described meeting originating end obtain dissimilar transformation parameter by weighted calculation, and described dissimilar transformation parameter has priority orders according to described reception parameter and respective weights thereof;
Described meeting originating end transfers to meeting by described server with audio, video data according to the higher transformation parameter of priority and participates in end;
If the reception parameter of described meeting participation end and the variance rate of described transformation parameter are more than or equal to preset value, and the number that described variance rate participates in end more than or equal to the meeting of described preset value is during more than or equal to preset number, and described meeting originating end participates in end according to the transformation parameter of next grade in priority orders by the described audio, video data of described server transmission to described meeting.
2. Web conference audio video transmission method according to claim 1, is characterized in that, the type of described reception parameter comprises resolution, encoding and decoding speed and the network bandwidth.
3. Web conference audio video transmission method according to claim 1, is characterized in that, described server participates in end from each meeting and obtains dissimilar reception parameter.
4. Web conference audio video transmission method according to claim 1, is characterized in that, the reception parameter area that described meeting originating end is default dissimilar and the table of comparisons of weight.
5. a Web conference audio-video transmission system, is characterized in that, comprises that meeting originating end, server and meeting participate in end, and described meeting originating end connects described server, and described server connects described meeting and participates in end,
Wherein, described meeting originating end is used for obtaining from described server the dissimilar reception parameter that meeting participates in end, and the number of the reception parameter of each type is a plurality of,
Described meeting originating end is used for obtaining dissimilar transformation parameter according to described reception parameter and respective weights thereof by weighted calculation, and described dissimilar transformation parameter has priority orders,
Described meeting originating end is used for by described server, audio, video data being transferred to meeting according to the higher transformation parameter of priority and participates in end,
If the reception parameter of described meeting participation end and the variance rate of described transformation parameter are more than or equal to preset value, and the number that described variance rate participates in end more than or equal to the meeting of described preset value is during more than or equal to preset number, and described meeting originating end participates in end according to the transformation parameter of next grade in priority orders by the described audio, video data of described server transmission to described meeting.
6. Web conference audio-video transmission system according to claim 5, is characterized in that, the type of described reception parameter comprises resolution, encoding and decoding speed and the network bandwidth.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110366218 CN102364935B (en) | 2011-11-18 | 2011-11-18 | Audio and video transmission method of network conference and system thereof |
| PCT/CN2012/084329 WO2013071839A1 (en) | 2011-11-18 | 2012-11-08 | Network conference audio/video transmission method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110366218 CN102364935B (en) | 2011-11-18 | 2011-11-18 | Audio and video transmission method of network conference and system thereof |
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| Publication Number | Publication Date |
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| CN102364935A CN102364935A (en) | 2012-02-29 |
| CN102364935B true CN102364935B (en) | 2013-06-05 |
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| WO (1) | WO2013071839A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102364935B (en) * | 2011-11-18 | 2013-06-05 | 苏州阔地网络科技有限公司 | Audio and video transmission method of network conference and system thereof |
| CN102364937B (en) * | 2011-11-21 | 2013-08-14 | 苏州阔地网络科技有限公司 | Audio and video transmission control method of network conference and system thereof |
| CN102364936B (en) * | 2011-11-21 | 2013-08-14 | 苏州阔地网络科技有限公司 | Audio and video transmission method and system for network conference |
| CN104935971B (en) * | 2015-06-02 | 2018-08-07 | 阔地教育科技有限公司 | Transmission of video dynamic adjusting method and system in a kind of Online class |
| CN111131165B (en) * | 2019-11-27 | 2021-09-24 | 重庆邮电大学 | DMB video pushing method based on multi-description coding |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08237627A (en) * | 1995-02-22 | 1996-09-13 | Oki Electric Ind Co Ltd | Multi-point video conference system |
| JP2001128132A (en) * | 1999-10-28 | 2001-05-11 | Nippon Telegr & Teleph Corp <Ntt> | Method and system for video conference and recording medium having this method recorded thereon |
| NO318974B1 (en) * | 2003-07-07 | 2005-05-30 | Tandberg Telecom As | Distributed MCU |
| US20090247089A1 (en) * | 2004-12-15 | 2009-10-01 | Koninklijke Philips Electronics, N.V. | Multicast communication system with power control |
| DE602005007620D1 (en) * | 2005-12-14 | 2008-07-31 | Ntt Docomo Inc | Device and method for determining the transmission policy for several and varied applications |
| JP2008016914A (en) * | 2006-07-03 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Coding parameter control apparatus in multiple image simultaneous recording and multiple image simultaneous recording apparatus |
| CN101127705B (en) * | 2007-09-20 | 2011-09-21 | 中兴通讯股份有限公司 | Method for realizing network transmission service quality |
| CN101483755A (en) * | 2008-12-29 | 2009-07-15 | 深圳华为通信技术有限公司 | Method and apparatus for service broadcast parameter automation regulation in DVB system |
| CN102364935B (en) * | 2011-11-18 | 2013-06-05 | 苏州阔地网络科技有限公司 | Audio and video transmission method of network conference and system thereof |
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| WO2013071839A1 (en) | 2013-05-23 |
| CN102364935A (en) | 2012-02-29 |
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