CN102364935A - 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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- CN102364935A CN102364935A CN2011103662185A CN201110366218A CN102364935A CN 102364935 A CN102364935 A CN 102364935A CN 2011103662185 A CN2011103662185 A CN 2011103662185A CN 201110366218 A CN201110366218 A CN 201110366218A CN 102364935 A CN102364935 A CN 102364935A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- 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 frequency and 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, because 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 present invention provides a kind of Web conference audio frequency and video transmission method and system, to address the above problem.
The present invention provides a kind of Web conference audio frequency and video transmission method.Said method may further comprise the steps: the meeting originating end obtains the dissimilar reception parameter that end is participated in meeting from server, and the reception parameter of each type is a plurality of; The meeting originating end obtain dissimilar transmission parameters through weighted calculation, and dissimilar transmission parameters has priority orders according to receiving parameter and respective weights thereof; The meeting originating end passes through server according to the higher transmission 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 transmission parameter are more than or equal to preset value; And the number that variance rate is participated 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 Transport audio, video data to meeting according to the transmission parameter of next grade in the priority orders and participates in end.
The present invention also provides a kind of Web conference audio-video transmission system.Said system comprises meeting originating end, server and meeting participation end.Meeting originating end Connection Service device, server connect meeting and participate in end.Wherein, the meeting originating end is used for obtaining the dissimilar reception parameter that end is participated in meeting from server, and the number of the reception parameter of each type is a plurality of.The meeting originating end is used for obtain dissimilar transmission parameters through weighted calculation, and dissimilar transmission parameters 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 transmission 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 transmission parameter are more than or equal to preset value; And the number that said variance rate is participated 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 Transport audio, video data to meeting according to the transmission parameter of next grade in the priority orders and participates in end.
Compared to prior art; According to Web conference audio frequency and video transmission method provided by the invention and system; The meeting originating end passes through weighted calculation and obtains transmission parameter according to receiving parameter and respective weights thereof, and the meeting originating end passes through server according to the higher transmission parameter of priority and audio, video data is transferred to meeting participates in end.In addition, the transmission parameter that adopts when the meeting originating end does not satisfy meeting when participating in the corresponding condition of acceptance of end, and the meeting originating end can be participated in end according to the transmission parameter of next grade in priority orders transmission tone video data to meeting again.So, the accommodation in the audio, video data transmission course be can be implemented in, thereby various network environment and customer demand satisfied.And, for the Web conference of large contingent, adopt aforesaid way transmission tone video data can save resource, raise the efficiency.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
The flow chart of the Web conference audio frequency and video transmission method that provides for preferred embodiment according to the present invention shown in Figure 1;
The sketch map of the Web conference audio-video transmission system that provides for preferred embodiment according to the present invention shown in Figure 2.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
The flow chart of the Web conference audio frequency and video transmission method that provides for preferred embodiment according to the present invention shown in Figure 1.As shown in Figure 1, the Web conference audio frequency and video transmission method that preferred embodiment of the present invention provides comprises step 101～104.
In step 101, the meeting originating end obtains the dissimilar reception parameter that end is participated in meeting from server, 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 end is participated in meeting is at least two.Yet the present invention does not limit this.
Particularly, if the meeting originating end needs when end transmission audio, video data is participated in meeting, server can be participated in end from each meeting earlier and obtained dissimilar reception parameters.Participating in end A～C with three meetings is example; Server can obtain resolution m1*n1, encoding and decoding speed b1 and the network bandwidth d1 that end A is participated in meeting; Resolution m2*n2, encoding and decoding speed b2 and the network bandwidth d2 of end B participated in meeting, and resolution m3*n3, encoding and decoding speed b3 and the network bandwidth d3 of end C participated in meeting.After server obtained dissimilar reception parameters, server for example can transfer to the meeting originating end with above-mentioned reception parameter.The present invention does not limit server and obtains the mode that receives parameter.
In step 102, the meeting originating end obtain dissimilar transmission parameters through weighted calculation, and dissimilar transmission parameters 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, the 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 present embodiment, for resolution m*n, m and n have the contrast relationship (for example shown in the following table) of its scope and weight respectively.According to the scope of m and n and corresponding weight thereof, can obtain m ' and n ' through weighted calculation respectively, that is, be m ' * n ' as the resolution of transmission 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 the resolution m1*n1=600*450 of end A, the resolution m2*n2=800*600 that end B is participated in meeting, the resolution m3*n3=640*360 that end C is participated in meeting are participated in meeting; Can calculate acquisition: m '=600*30%+800*50%+640*30%=772, n '=450*10%+600*50%+360*10%=381 according to the corresponding weight of last table.That is, can be used as resolution m ' * the n '=772*381 of transmission parameter.Yet the present invention is not limited thereto.In practical application, can set resolving range and corresponding weight thereof as required.
In present embodiment, the scope of encoding and decoding speed and the contrast relationship of weight are for example shown in the 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 the encoding and decoding speed b1=300kbps of end A is participated in meeting; The encoding and decoding speed b2=400kbps of end B is participated in meeting; The encoding and decoding speed b3=550kbps of end C is participated in meeting, can calculate acquisition: b '=300*30%+400*30%+550*40%=430 according to the corresponding weight of last table.That is, can be used as encoding and decoding speed the b '=430kbps of transmission parameter.Yet the present invention is not limited thereto.In practical application, can set encoding and decoding scope and corresponding weight thereof as required.
In present embodiment, the scope of the network bandwidth and the contrast relationship of weight are for example shown in the following table.
| Network bandwidth d (unit: Mbps) | Weight |
| ?＜2 | 20％ |
| >;=2 and＜5 | 50％ |
| >;=5 and＜7 | 20％ |
| ?≥7 | 10％ |
For example; If the network bandwidth d1=3Mbps of end A is participated in meeting; The network bandwidth d2=4Mbps of end B is participated in meeting, and the network bandwidth d3=1Mbps of end C is participated in meeting, can calculate acquisition: d '=3*50%+4*50%+1*20%=3.7 according to the corresponding weight of last table.That is, can be used as network bandwidth d '=3.7Mbps of transmission parameter.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 transmission parameter of priority audio, video data is transferred to meeting participation end.Wherein, when transmitting video data, the priority of transmission parameter is followed successively by resolution, encoding and decoding speed, the network bandwidth from height to hanging down.When transmitting audio data, the priority of transmission parameter is followed successively by encoding and decoding speed, the network bandwidth from height to hanging down.In other words, when transmitting video data, preferentially adopt resolution as transmission parameter; When transmitting audio data, preferentially adopt encoding and decoding speed as transmission parameter.
In step 104; If the reception parameter of meeting participation end and the variance rate of transmission parameter are more than or equal to preset value; And the data that variance rate is participated 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 Transport audio, video data to meeting according to the transmission parameter of next grade in the priority orders and participates in end.Wherein, the transmission parameter of each type has the corresponding preset value with the variance rate that receives parameter.End is participated in meeting can store preset value and preset number, and the dissimilar reception parameter of different meetings participation end can be different with the preset value of the variance rate of transmission parameter.For example, the preset value of variance rate that the resolution of end A is participated in meeting is 0.1, and the preset value of variance rate that the resolution of end B is participated in meeting is 0.07, and the preset value of variance rate that the resolution of end C is participated in meeting is 0.15.Yet the present invention does not limit this.In other embodiment, the dissimilar reception parameter that different meetings is participated in holding can be consistent with the preset value of the variance rate of transmission 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 corresponding value as required.
In this, be that example describes with the transmitting video data.By above-mentioned can knowing for example, the meeting originating end is participated in end A～C according to resolution 772*381 transmitting video data to meeting earlier.Therefore, the reception parameter of end A and variance rate a1=|600*450-772*381|/(600*450)=0.089＜0.1 (preset value of the variance rate of resolution) of transmission parameter are participated in meeting; The reception parameter of end B and variance rate a2=|800*600-772*381|/(800*600)=0.387＞0.07 (preset value of the variance rate of resolution) of transmission parameter are participated in meeting; The reception parameter of end C and variance rate a3=|640*360-772*381|/(640*360)=0.171＞0.15 (preset value of the variance rate of resolution) of transmission parameter are participated in meeting.In this, what end was participated in meeting adds up to 3, and the number that end is participated in the meeting that do not meet preset value of the variance rate of resolution is 2, and above-mentioned incongruent number equals preset number (2).At this moment, the meeting originating end can be participated in end B and C transmitting video data for meeting according to the transmission parameter (for example, encoding and decoding speed) of next grade in the priority orders.In addition, if the preset value of the variance rate of the resolution of meeting participation end A～C is 0.4, then 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 holding B and C transmitting video data again according to above-mentioned encoding and decoding speed, can know for example by above-mentioned, can be used as encoding and decoding speed the b '=430kbps of transmission parameter.Therefore, 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 transmission parameter are participated in meeting; 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 transmission parameter are participated in meeting.At this moment, end B is participated in meeting, C all satisfies condition of acceptance.Yet, if participating in end, meeting still has the situation that does not satisfy preset value, the meeting originating end can be participated in the end transmitting video data for meeting according to the transmission parameter (for example, the network bandwidth) of next grade in the priority orders.
In addition, about the transmission means of voice data transmission means, so repeat no more in this with video data.
The sketch map of the Web conference audio-video transmission system that provides for preferred embodiment according to the present invention shown in Figure 2.As shown in Figure 2, the Web conference audio-video transmission system that preferred embodiment of the present invention provides comprises meeting originating end 20, server 21 and meeting participation end.In this, participating in end 22a～22c with three meetings is example.Yet the present invention does not do any qualification to this.
In present embodiment, meeting originating end 20 Connection Service devices 21, server 21 connect meeting and participate in end 22a～22c.Meeting originating end 20 is used for obtaining the dissimilar reception parameter that end 22a～22c is participated in meeting from server 21, and the number of the reception parameter of each type is a plurality of.Meeting originating end 20 is used for obtain dissimilar transmission parameters through weighted calculation, and dissimilar transmission parameters 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 transmission parameter of priority audio, video data is transferred to meeting participation end 22a～22c.If meeting (is for example participated in end; Meeting participation end 22a) the reception parameter and the variance rate of said transmission parameter are more than or equal to preset value; And the number that said variance rate is participated in end more than or equal to the meeting of said preset value is during more than or equal to preset number, and meeting originating end 20 passes through server 21 transmission tone video data to meetings according to the transmission parameter of next grade in the priority orders and participates in end 22a.Specific operation process about said system is said with aforementioned method, so repeat no more in this.
In sum; Preferred embodiment provides according to the present invention Web conference audio frequency and video transmission method and system; The meeting originating end passes through weighted calculation and obtains transmission parameter according to receiving parameter and respective weights thereof, and the meeting originating end passes through server according to the higher transmission parameter of priority and audio, video data is transferred to meeting participates in end.In addition, the transmission parameter that adopts when the meeting originating end does not satisfy meeting when participating in the corresponding condition of acceptance of end, and the meeting originating end can be participated in end according to the transmission parameter of next grade in priority orders transmission tone video data to meeting again.So, the accommodation in the audio, video data transmission course be can be implemented in, thereby various network environment and customer demand satisfied.And, for the Web conference of large contingent, adopt aforesaid way transmission tone video data can save resource, raise the efficiency.
The above is merely 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 changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Web conference audio frequency and video transmission method is characterized in that, may further comprise the steps:
The meeting originating end obtains the dissimilar reception parameter that end is participated in meeting from server, and the reception parameter of each type is a plurality of;
Said meeting originating end obtain dissimilar transmission parameters through weighted calculation, and said dissimilar transmission parameter has priority orders according to said reception parameter and respective weights thereof;
Said meeting originating end transfers to meeting through said server with audio, video data according to the higher transmission parameter of priority and participates in end;
If the reception parameter of said meeting participation end and the variance rate of said transmission parameter are more than or equal to preset value; And the number that said variance rate is participated in end more than or equal to the meeting of said preset value is during more than or equal to preset number, and said meeting originating end is participated in end according to the transmission parameter of next grade in the priority orders through the said audio, video data of said Server Transport to said meeting.
2. Web conference audio frequency and video transmission method according to claim 1 is characterized in that the type of said reception parameter comprises resolution, encoding and decoding speed and the network bandwidth.
3. Web conference audio frequency and video transmission method according to claim 2 is characterized in that, when transmitting video data, the priority of said transmission parameter is followed successively by resolution, encoding and decoding speed, the network bandwidth from height to hanging down.
4. Web conference audio frequency and video transmission method according to claim 2 is characterized in that, when transmitting audio data, the priority of said transmission parameter is followed successively by encoding and decoding speed, the network bandwidth from height to hanging down.
5. Web conference audio frequency and video transmission method according to claim 1 is characterized in that, said server is participated in end from each meeting and obtained dissimilar reception parameters.
6. Web conference audio frequency and video transmission method according to claim 1 is characterized in that, the reception parameter area that said meeting originating end is preset dissimilar and the table of comparisons of weight.
7. a Web conference audio-video transmission system is characterized in that, comprises meeting originating end, server and meeting participation end, and said meeting originating end connects said server, and said server connects said meeting and participates in end,
Wherein, said meeting originating end is used for obtaining the dissimilar reception parameter that end is participated in meeting from said server, and the number of the reception parameter of each type is a plurality of,
Said meeting originating end is used for obtaining dissimilar transmission parameters according to said reception parameter and respective weights thereof through weighted calculation, and said dissimilar transmission parameter has priority orders,
Said meeting originating end is used for through said server audio, video data being transferred to meeting according to the higher transmission parameter of priority and participates in end,
If the reception parameter of said meeting participation end and the variance rate of said transmission parameter are more than or equal to preset value; And the number that said variance rate is participated in end more than or equal to the meeting of said preset value is during more than or equal to preset number, and said meeting originating end is participated in end according to the transmission parameter of next grade in the priority orders through the said audio, video data of said Server Transport to said meeting.
8. Web conference audio-video transmission system according to claim 7 is characterized in that the type of said reception parameter comprises resolution, encoding and decoding speed and the network bandwidth.
9. Web conference audio-video transmission system according to claim 8 is characterized in that, when transmitting video data, the priority of said transmission parameter is followed successively by resolution, encoding and decoding speed, the network bandwidth from height to hanging down.
10. Web conference audio-video transmission system according to claim 8 is characterized in that, when transmitting audio data, the priority of said transmission parameter is followed successively by encoding and decoding speed, the network bandwidth from height to hanging down.
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 |
Applications Claiming Priority (1)
| 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 |
|---|---|
| CN102364935A true CN102364935A (en) | 2012-02-29 |
| CN102364935B CN102364935B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110366218 Expired - Fee Related CN102364935B (en) | 2011-11-18 | 2011-11-18 | Audio and video transmission method of network conference and system thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102364935B (en) |
| WO (1) | WO2013071839A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364937A (en) * | 2011-11-21 | 2012-02-29 | 苏州阔地网络科技有限公司 | Audio and video transmission control method of network conference and system thereof |
| CN102364936A (en) * | 2011-11-21 | 2012-02-29 | 苏州阔地网络科技有限公司 | Audio and video transmission method and system for network conference |
| WO2013071839A1 (en) * | 2011-11-18 | 2013-05-23 | Hu Jiaming | Network conference audio/video transmission method and system |
| CN104935971A (en) * | 2015-06-02 | 2015-09-23 | 阔地教育科技有限公司 | Video transmission dynamic adjusting method and system for online classroom |
| CN111131165A (en) * | 2019-11-27 | 2020-05-08 | 重庆邮电大学 | DMB video pushing method based on multi-description coding |
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- 2011-11-18 CN CN 201110366218 patent/CN102364935B/en not_active Expired - Fee Related
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- 2012-11-08 WO PCT/CN2012/084329 patent/WO2013071839A1/en active Application Filing
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| 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 |
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| WO2013071839A1 (en) * | 2011-11-18 | 2013-05-23 | Hu Jiaming | Network conference audio/video transmission method and system |
| CN102364937A (en) * | 2011-11-21 | 2012-02-29 | 苏州阔地网络科技有限公司 | Audio and video transmission control method of network conference and system thereof |
| CN102364936A (en) * | 2011-11-21 | 2012-02-29 | 苏州阔地网络科技有限公司 | Audio and video transmission method and system for network conference |
| CN104935971A (en) * | 2015-06-02 | 2015-09-23 | 阔地教育科技有限公司 | Video transmission dynamic adjusting method and system for online classroom |
| 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 |
| CN111131165A (en) * | 2019-11-27 | 2020-05-08 | 重庆邮电大学 | DMB video pushing method based on multi-description coding |
| CN111131165B (en) * | 2019-11-27 | 2021-09-24 | 重庆邮电大学 | DMB video pushing method based on multi-description coding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102364935B (en) | 2013-06-05 |
| WO2013071839A1 (en) | 2013-05-23 |
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