CN102158683A - Testing method of video delay in video conference and computer - Google Patents
Testing method of video delay in video conference and computer Download PDFInfo
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- CN102158683A CN102158683A CN201110103933XA CN201110103933A CN102158683A CN 102158683 A CN102158683 A CN 102158683A CN 201110103933X A CN201110103933X A CN 201110103933XA CN 201110103933 A CN201110103933 A CN 201110103933A CN 102158683 A CN102158683 A CN 102158683A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
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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
Abstract
The invention relates to a testing method of video delay in a video conference and a computer. The method provided by the invention comprises the following steps: obtaining data messages, wherein the data messages comprise a first message which is sent to a multi-point control unit (MCU) from a source terminal and a second message which is sent to a remote terminal from the MCU; respectively obtaining the same frame of images from the video code stream message of the first message and the video code stream message of the second message; analyzing and obtaining the different time information of the same frame of the images in the two messages; and computing and obtaining the video delay according to the time difference of the different time information. By utilizing the method and computer provided by the invention, the message time difference of the video images are directly output according to the input MCU video images and the MCU, thereby directly obtaining the video delay of the MCU; the difference values of timestamps on the images do not need to be compared and are independent of the sampling rate of the terminal; the problem that the sampling rate is not matched with the refresh rate does not exist; the operating procedures of a test are simple; and the accuracy and testing efficiency of the data are enhanced.
Description
Technical field
The present invention relates to communication technical field, specifically is the method for testing and the computer of video time-delay in the video conference.
Background technology
The method of testing the time-delay of MCU (multipoint control unit) video in the prior art is: when MCU has a meeting, adopt DVD to play the stopwatch timestamp as the terminal input video source, (one is the terminal image of input MCU to take two terminals simultaneously by optical camera, one is the image that MCU exports to terminal) output image, the difference of two terminal image timestamps on this image of statistics and analysis is finally calculated the video of MCU and is delayed time then.This method have a following defective:
The cost height.Need the playback equipment of high definition high sampling rate camera, high-definition camera, HDTV (High-Definition Television), high number refresh rate etc.
Introduce multiple-error.The error origination point is respectively: the stopwatch timestamp of camera, video camera, MCU, broadcast, the delay time error that maximum possible occurs is 2 frames, calculate by sample rate 30HZ, error is about 60 milliseconds, and the time-delay of the video of MCU, the theoretic time is about 200 milliseconds even less than 100 milliseconds, so error ratio is bigger.
Operating time is long.Need use statistical theory, adopt a large amount of methods of taking averaged, the tester is tired easily.
Summary of the invention
Main purpose of the present invention provides the method for testing and the computer of video time-delay in a kind of video conference, and the operating process of test is simple, improves data accuracy and testing efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
The method of testing of video time-delay in a kind of video conference, it comprises:
Obtain data message, described data message comprises that source terminal sends to first message of multipoint control unit MCU and second message that described MCU sends to remote terminal;
In neutralizing the video code flow message of second message, the video code flow message of described first message obtains same two field picture respectively;
Resolve and obtain two different time information of the same two field picture in described two messages;
Time difference according to described two different time information calculates slowed-down video.
Preferably, the described data message that obtains specifically comprises:
The data intercept message comprises first message and second message in the data message of described intercepting;
Described first message and second message are separated from the data message of described intercepting, and resolved respectively.
Preferably, describedly in the video code flow message of described first message neutralizes the video code flow message of second message, obtain same two field picture respectively,, further comprise before:
From described first message and second message, take out the video code flow message respectively.
Preferably, describedly in the video code flow message of described first message neutralizes the video code flow message of second message, obtain same two field picture respectively, specifically comprise:
In first message, extract a two field picture, the identical image of image that in second message, extracts in traversal queries and first message, till finding the image identical with the image that extracts in first message, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
Preferably, describedly in the video code flow message of described first message neutralizes the video code flow message of second message, obtain same two field picture respectively, specifically comprise:
Data message to the video code flow message all carries out mark, in first message, extract a two field picture, the identical label information of image that in second message, extracts in traversal queries and first message, till finding identical information, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
The present invention also provides a kind of computer, and it comprises:
The message acquiring unit is used to obtain data message, and described data message comprises that source terminal sends to first message of multipoint control unit MCU and second message that described MCU sends to remote terminal;
Image acquisition unit is used for respectively the neutralize video code flow message of second message of video code flow message at described first message and obtains same two field picture;
Two different time information of the same two field picture in described two messages are resolved and obtain in the image analysis unit with language;
The slowed-down video computing unit is used for calculating slowed-down video according to the time difference of described two different time information.
Preferably, described message acquiring unit comprises:
Message intercepting subelement is used for the data intercept message, comprises first message and second message in the data message of described intercepting;
Message segregant unit is used for described first message and second message are separated from the data message of described intercepting, and resolves respectively.
Preferably, described computer also comprises:
The video message separative element is used for taking out the video code flow message respectively from described first message and second message.
Preferably, described image acquisition unit, be used for extracting a two field picture at first message, the identical image of image that in second message, extracts in traversal queries and first message, till finding the image identical with the image that extracts in first message, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
Preferably, described image acquisition unit, be used for the data message of video code flow message is all carried out mark, in first message, extract a two field picture, the identical label information of image that in second message, extracts in traversal queries and first message, till finding identical information,, in first message, take off a two field picture and in second message, repeat traversal queries then if do not find then abandon the image that extracts in this first message.
Implement technical scheme of the present invention, has following beneficial effect: method provided by the invention and computer, directly the message time difference of MCU video image and MCU output video image is imported in statistical analysis, thereby directly obtain the video time-delay of MCU, the difference that does not need timestamp on the contrast images, so irrelevant with the terminal sample rate, there are not sample rate and refresh rate mismatch problem.The operating process of test is simple, and has improved data accuracy and testing efficiency.
Description of drawings
The method flow diagram that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the flow chart of the step S110 among Fig. 1;
The structural representation of the computer that Fig. 3 provides for the embodiment of the invention;
Fig. 4 is the structural representation of the message acquiring unit among Fig. 3;
The structural representation of another computer that Fig. 5 provides for the embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides the method for testing of video time-delay in a kind of video conference, the system that this method is used comprises: at least two high energy is supported the terminal of 1080P encoding and decoding, MCU, switch, two computers (as the computer of intercepting message, as the computer of operation stopwatch program), a high frequency CRT monitor, a high definition camera and an operable network, and configuration requirement is as follows:
There are not other meetings to hold on this MCU as measurand.
Switch request has the gigabit network interface, can prevent packet loss, and mirror port is set.
Network interface card as the computer that intercepts message requires PCI-Express, and the software and the code stream player of intercepting message is installed above it.
As the computer of operation stopwatch program, 60HZ and above screen refresh rate are at least supported in its requirement, and this stopwatch program accuracy is more than or equal to the camera sample rate.
The high definition CRT monitor requires to support 60HZ at least and with the screen refresh rate of upper frequency
The high definition camera requires to support that 25HZ reaches the sample rate with upper frequency.
MCU, source terminal (are provided with above-mentioned camera on this terminal, be used to obtain image), remote terminal and as the intercepting message computer, all be connected on same the switch by network respectively and carry out networking, computer as operation stopwatch program is connected with the high definition CRT monitor, camera is used to obtain the image on this high definition CRT, holds a meeting then on this MCU.Also have other meetings holding if this MCU goes up, then close other meetings, reduce the error that other meetings are introduced.
As shown in Figure 1, this method comprises:
S110, as the intercepting message computer obtain data message, described data message comprises that source terminal sends to first message of multipoint control unit MCU and second message that described MCU sends to remote terminal.
Among this step S110, as shown in Figure 2, specifically comprise:
S111, as the intercepting message computer data intercept message, comprise first message and second message in the data message of described intercepting;
More specifically, a mirror port is set on switch, messages all on the switch can obtain by this mirror port.When meeting is held, begin at this mirror port data intercept message as the computer of intercepting message, up to meeting hold successfully stable after, the data of preserving the data message of this intercepting.The data message of this intercepting comprises that source terminal sends to first message of multipoint control unit MCU and second message that described MCU sends to remote terminal.
S112, as the intercepting message computer described first message and second message are separated from the data message of described intercepting, and respectively the parsing.
S120, in neutralizing the video code flow message of second message, the video code flow message of described first message obtains same two field picture respectively as the computer of intercepting message;
Among this step S130, specifically comprise:
Computer as the intercepting message extracts a two field picture in first message, the identical image of image that in second message, extracts in traversal queries and first message then, till finding the image identical with the image that extracts in first message, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
Perhaps,
Data message to the video code flow message all carries out mark, computer as the intercepting message extracts a two field picture in first message, the identical label information of image that in second message, extracts in traversal queries and first message then, till finding identical information, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
S130, as the computer analyzing of intercepting message and obtain two different time information of the same two field picture in described two messages;
S140, calculate slowed-down video according to time difference of described two different time information as the computer of intercepting message.
After finding the image temporal information as the computer of intercepting message, computing time difference, the difference account form is the time that deducts image time of extracting in second message image that extracts in first message.The time difference that obtains is same two field picture and handles the time-delay that the back produces through MCU, is the video time-delay.
In other embodiment, on the basis of the foregoing description, before the described step S120, further comprise: the computer as the intercepting message takes out the video code flow message respectively from described first message and second message.Concrete:
First message and second message separated as the computer of intercepting message all comprise voice message, video message, signaling message.Video code flow message pure video is resolved and extracted to first message that separates and second message respectively so that carry out delay test by pure video code flow message, reduces and disturbs.
The message time difference of direct statistical analysis input MCU video image of the method that this embodiment provides and MCU output video image, thereby directly obtain the video time-delay of MCU, the difference that does not need timestamp on the contrast images, so irrelevant with the terminal sample rate, there are not sample rate and refresh rate mismatch problem.The operating process of test is simple, and has improved data accuracy and testing efficiency.
The embodiment of the invention also provides a kind of computer, and as shown in Figure 3, this computer comprises:
Two different time information of the same two field picture in described two messages are resolved and obtain in image analysis unit 230 with language;
Slowed-down video computing unit 240 is used for calculating slowed-down video according to the time difference of described two different time information.
In other embodiment, more specifically, described message acquiring unit 210 as shown in Figure 4, comprising:
In other embodiment, on the basis of the foregoing description, further, as shown in Figure 5, described computer also comprises:
Video message separative element 219 is used for taking out the video code flow message respectively from described first message and second message.
In other embodiments, more specifically: described image acquisition unit 220, be used for extracting a two field picture at first message, the identical image of image that in second message, extracts in traversal queries and first message, till finding the image identical with the image that extracts in first message, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
In other embodiments, more specifically: described image acquisition unit 220, also be used for the data message of video code flow message is all carried out mark, in first message, extract a two field picture, the identical label information of image that in second message, extracts in traversal queries and first message, till finding identical information,, in first message, take off a two field picture and in second message, repeat traversal queries then if do not find then abandon the image that extracts in this first message.
The message time difference of direct statistical analysis input MCU video image of the computer that this embodiment provides and MCU output video image, thereby directly obtain the video time-delay of MCU, the difference that does not need timestamp on the contrast images, so irrelevant with the terminal sample rate, there are not sample rate and refresh rate mismatch problem.The operating process of test is simple, and has improved data accuracy and testing efficiency.
Below only be preferred embodiment of the present invention,, all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.
Claims (10)
1. the method for testing of video time-delay in the video conference is characterized in that, comprising:
Obtain data message, described data message comprises that source terminal sends to first message of multipoint control unit MCU and second message that described MCU sends to remote terminal;
In neutralizing the video code flow message of second message, the video code flow message of described first message obtains same two field picture respectively;
Resolve and obtain two different time information of the same two field picture in described two messages;
Time difference according to described two different time information calculates slowed-down video.
2. method according to claim 1 is characterized in that the described data message that obtains specifically comprises:
The data intercept message comprises first message and second message in the data message of described intercepting;
Described first message and second message are separated from the data message of described intercepting, and resolved respectively.
3. as method as described in the claim 2, it is characterized in that, describedly in the video code flow message of described first message neutralizes the video code flow message of second message, obtain same two field picture respectively,, further comprise before:
From described first message and second message, take out the video code flow message respectively.
4. as method as described in the claim 3, it is characterized in that, describedly in the video code flow message of described first message neutralizes the video code flow message of second message, obtain same two field picture respectively, specifically comprise:
In first message, extract a two field picture, the identical image of image that in second message, extracts in traversal queries and first message, till finding the image identical with the image that extracts in first message, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
5. as method as described in the claim 3, it is characterized in that, describedly in the video code flow message of described first message neutralizes the video code flow message of second message, obtain same two field picture respectively, specifically comprise:
Data message to the video code flow message all carries out mark, in first message, extract a two field picture, the identical label information of image that in second message, extracts in traversal queries and first message, till finding identical information, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
6. a computer is characterized in that, comprising:
The message acquiring unit is used to obtain data message, and described data message comprises that source terminal sends to first message of multipoint control unit MCU and second message that described MCU sends to remote terminal;
Image acquisition unit is used for respectively the neutralize video code flow message of second message of video code flow message at described first message and obtains same two field picture;
Two different time information of the same two field picture in described two messages are resolved and obtain in the image analysis unit with language;
The slowed-down video computing unit is used for calculating slowed-down video according to the time difference of described two different time information.
7. as computer as described in the claim 6, it is characterized in that described message acquiring unit comprises:
Message intercepting subelement is used for the data intercept message, comprises first message and second message in the data message of described intercepting;
Message segregant unit is used for described first message and second message are separated from the data message of described intercepting, and resolves respectively.
8. as computer as described in the claim 7, it is characterized in that, also comprise:
The video message separative element is used for taking out the video code flow message respectively from described first message and second message.
9. as computer as described in the claim 8, it is characterized in that,
Described image acquisition unit, be used for extracting a two field picture at first message, the identical image of image that in second message, extracts in traversal queries and first message, till finding the image identical with the image that extracts in first message, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
10. as computer as described in the claim 8, it is characterized in that, described image acquisition unit, be used for the data message of video code flow message is all carried out mark, extract a two field picture in first message, the identical label information of image that extracts in traversal queries and first message in second message is till finding identical information, if do not find then abandon the image that extracts in this first message, in first message, take off a two field picture and in second message, repeat traversal queries then.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110103933.XA CN102158683B (en) | 2011-04-25 | 2011-04-25 | The method of testing of video delay in video conference and computer |
| PCT/CN2011/084478 WO2012146035A1 (en) | 2011-04-25 | 2011-12-22 | Method for testing video delay in video conference and computer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110103933.XA CN102158683B (en) | 2011-04-25 | 2011-04-25 | The method of testing of video delay in video conference and computer |
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| CN102158683A true CN102158683A (en) | 2011-08-17 |
| CN102158683B CN102158683B (en) | 2015-08-12 |
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| CN201110103933.XA Expired - Fee Related CN102158683B (en) | 2011-04-25 | 2011-04-25 | The method of testing of video delay in video conference and computer |
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| WO (1) | WO2012146035A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012146035A1 (en) * | 2011-04-25 | 2012-11-01 | 中兴通讯股份有限公司 | Method for testing video delay in video conference and computer |
| CN109309831A (en) * | 2018-12-13 | 2019-02-05 | 苏州科达科技股份有限公司 | The test method and device of video delay in video conference |
| CN110324566A (en) * | 2019-07-05 | 2019-10-11 | 苏州科达科技股份有限公司 | The test method of sound delay, test device and test equipment in video conference |
| CN110365555A (en) * | 2019-08-08 | 2019-10-22 | 广州虎牙科技有限公司 | Audio delay test method, device, electronic equipment and readable storage medium storing program for executing |
| CN111372105A (en) * | 2020-03-26 | 2020-07-03 | 深圳市微测检测有限公司 | Video information transmission delay test method, device, terminal and storage medium |
| CN113612988A (en) * | 2021-07-20 | 2021-11-05 | 深圳市拔超科技有限公司 | Method and device for automatically testing video delay and video transmission equipment |
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- 2011-04-25 CN CN201110103933.XA patent/CN102158683B/en not_active Expired - Fee Related
- 2011-12-22 WO PCT/CN2011/084478 patent/WO2012146035A1/en active Application Filing
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| CN1614939A (en) * | 2003-11-06 | 2005-05-11 | 华为技术有限公司 | Realizing method for time-delaying test |
| US20060285501A1 (en) * | 2005-06-17 | 2006-12-21 | Gerard Damm | Performance monitoring of frame transmission in data network oam protocols |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012146035A1 (en) * | 2011-04-25 | 2012-11-01 | 中兴通讯股份有限公司 | Method for testing video delay in video conference and computer |
| CN109309831A (en) * | 2018-12-13 | 2019-02-05 | 苏州科达科技股份有限公司 | The test method and device of video delay in video conference |
| CN110324566A (en) * | 2019-07-05 | 2019-10-11 | 苏州科达科技股份有限公司 | The test method of sound delay, test device and test equipment in video conference |
| CN110324566B (en) * | 2019-07-05 | 2020-12-25 | 苏州科达科技股份有限公司 | Method, device and equipment for testing sound delay in video conference |
| CN110365555A (en) * | 2019-08-08 | 2019-10-22 | 广州虎牙科技有限公司 | Audio delay test method, device, electronic equipment and readable storage medium storing program for executing |
| CN110365555B (en) * | 2019-08-08 | 2021-12-10 | 广州虎牙科技有限公司 | Audio delay testing method and device, electronic equipment and readable storage medium |
| CN111372105A (en) * | 2020-03-26 | 2020-07-03 | 深圳市微测检测有限公司 | Video information transmission delay test method, device, terminal and storage medium |
| CN113612988A (en) * | 2021-07-20 | 2021-11-05 | 深圳市拔超科技有限公司 | Method and device for automatically testing video delay and video transmission equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012146035A1 (en) | 2012-11-01 |
| CN102158683B (en) | 2015-08-12 |
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