CN102158683B - The method of testing of video delay in video conference and computer - Google Patents
The method of testing of video delay in video conference and computer Download PDFInfo
- Publication number
- CN102158683B CN102158683B CN201110103933.XA CN201110103933A CN102158683B CN 102158683 B CN102158683 B CN 102158683B CN 201110103933 A CN201110103933 A CN 201110103933A CN 102158683 B CN102158683 B CN 102158683B
- Authority
- CN
- China
- Prior art keywords
- message
- image
- video
- same
- mcu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010998 test method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims description 5
- 238000010191 image analysis Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 description 9
- 239000000284 extract Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a kind of method of testing and computer of video delay in video conference, the method comprises: obtain data message, and described data message comprises source terminal and is sent to the second message that first message of multipoint control unit MCU and described MCU are sent to remote terminal; Same two field picture is obtained respectively in the video code flow message of described first message and in the video code flow message of the second message; 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.Method provided by the invention and computer, directly poor according to the message time of input MCU video image and MCU output video image, straight thus obtain the video time delay of MCU, do not need the difference of timestamp in contrast images, have nothing to do with terminal sample rate, there is not sample rate and refresh rate mismatch problem.The operating process of test is simple, and improves data accuracy and testing efficiency.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a computer for testing video delay in a video conference.
Background
The method for testing MCU (multipoint control unit) video delay in the prior art is as follows: when the MCU is in a meeting, a DVD playing stopwatch timestamp is used as a terminal video input source, an output image of two terminals (one is a terminal image input to the MCU, and the other is an image output to the terminal by the MCU) is shot simultaneously by an optical camera, then the difference value of the two terminal image timestamps on the image is counted and analyzed, and finally the video delay of the MCU is calculated. The method has the following defects:
the cost is high. High definition high sampling rate cameras, high definition televisions, high number refresh rate playback devices, and the like are needed.
Multiple errors are introduced. The error occurrence points are respectively: the delay error of the camera, the MCU and the playing stopwatch timestamp is 2 frames, the error is about 60 milliseconds calculated according to the sampling rate 30HZ, and the video delay of the MCU is about 200 milliseconds theoretically or even less than 100 milliseconds theoretically, so the error ratio is large.
The operation time is long. The statistical theory is needed, a method of taking a large number of shots to obtain an average value is adopted, and testers are easy to fatigue.
Disclosure of Invention
The invention mainly aims to provide a method and a computer for testing video delay in a video conference, which have simple test operation flow and improve data accuracy and test efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for testing video delay in a video conference comprises the following steps:
acquiring data messages, wherein the data messages comprise a first message sent to a Multipoint Control Unit (MCU) by a source terminal and a second message sent to a remote terminal by the MCU;
respectively acquiring the same frame of image from the video code stream message of the first message and the video code stream message of the second message;
analyzing and acquiring two different time information of the same frame of image in the two messages;
and calculating to obtain the video delay according to the time difference of the two different time information.
Preferably, the acquiring the data packet specifically includes:
intercepting data messages, wherein the intercepted data messages comprise a first message and a second message;
and separating the first message and the second message from the intercepted data message, and analyzing the first message and the second message respectively.
Preferably, before the obtaining the same frame of image in the video code stream message of the first message and the video code stream message of the second message, the method further includes:
and respectively extracting video code stream messages from the first message and the second message.
Preferably, the obtaining the same frame of image in the video code stream message of the first message and the video code stream message of the second message respectively includes:
extracting a frame of image from the first message, traversing and inquiring the image which is the same as the image extracted from the first message in the second message until the image which is the same as the image extracted from the first message is found, discarding the image extracted from the first message if the image which is the same as the image extracted from the first message is not found, taking the next frame of image from the first message, and then repeatedly traversing and inquiring in the second message.
Preferably, the obtaining the same frame of image in the video code stream message of the first message and the video code stream message of the second message respectively includes:
marking data information of a video code stream message, extracting a frame of image from a first message, traversing and inquiring mark information which is the same as the image extracted from the first message in a second message until the same information is found, discarding the image extracted from the first message if the same information is not found, taking the next frame of image from the first message, and then repeatedly traversing and inquiring in the second message.
The present invention also provides a computer, comprising:
the system comprises a message acquisition unit, a multipoint control unit and a remote terminal, wherein the message acquisition unit is used for acquiring data messages, and the data messages comprise a first message sent to the MCU by a source terminal and a second message sent to the remote terminal by the MCU;
an image obtaining unit, configured to obtain the same frame of image in the video stream message of the first message and the video stream message of the second message, respectively;
the image analysis unit analyzes and acquires two different time information of the same frame of image in the two messages by using the language;
and the video delay calculating unit is used for calculating the video delay according to the time difference of the two different time information.
Preferably, the message acquiring unit includes:
the message intercepting subunit is used for intercepting the data message, wherein the intercepted data message comprises a first message and a second message;
and the message separation subunit is configured to separate the first message and the second message from the intercepted data message, and analyze the first message and the second message respectively.
Preferably, the computer further comprises:
and the video message separation unit is used for respectively extracting video code stream messages from the first message and the second message.
Preferably, the image obtaining unit is configured to extract a frame of image in the first message, search for an image in the second message in a traversal manner, until the image is found, the image being the same as the image extracted in the first message, discard the image extracted in the first message if the image is not found, take the next frame of image in the first message, and repeat the traversal search in the second message.
Preferably, the image obtaining unit is configured to mark data information of a video stream message, extract a frame of image in a first message, search for the same mark information as the image extracted in the first message in a traversing manner in a second message until the same information is found, discard the image extracted in the first message if the same information is not found, take a next frame of image in the first message, and then repeat the searching in the traversing manner in the second message.
The technical scheme of the invention has the following beneficial effects: the method and the computer provided by the invention directly count and analyze the message time difference between the input MCU video image and the MCU output video image, so as to directly obtain the video delay of the MCU, and the difference value of the time stamps on the images does not need to be compared, so that the method and the computer are irrelevant to the sampling rate of a terminal and have no problem of mismatching of the sampling rate and the refresh rate. The operation flow of the test is simple, and the data accuracy and the test efficiency are improved.
Drawings
FIG. 1 is a flow chart of a method provided by an embodiment of the present invention;
FIG. 2 is a flowchart of step S110 in FIG. 1;
FIG. 3 is a schematic structural diagram of a computer according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the message acquiring unit in fig. 3;
fig. 5 is a schematic structural diagram of another computer provided in the embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a method for testing video delay in a video conference, which is applied to a system and comprises the following steps: at least two terminals which can support 1080P coding and decoding at the highest energy, an MCU, a switch, two computers (a computer used for intercepting messages and a computer used for running a stopwatch program), a high-frequency CRT display, a high-definition camera and a usable network, and the configuration requirements are as follows:
no other conference is held on the MCU as the subject.
The exchanger requires a kilomega network port, can prevent packet loss, and is provided with a mirror image port.
The network card of the computer used for intercepting the message requires a gigabit network card, and software and a code stream player for intercepting the message are installed on the gigabit network card.
A computer for running a stopwatch program that is required to support a screen refresh rate of at least 60HZ and above, with a stopwatch program accuracy of equal to or greater than the camera sampling rate.
High definition CRT displays require support of screen refresh rates of at least 60Hz and above
The high definition camera is required to support a sampling rate of 25HZ and above.
The MCU, the source terminal (the terminal is provided with the camera for obtaining images), the remote terminal and the computer for intercepting messages are respectively connected to the same switch through a network for networking, the computer for running a stopwatch program is connected with a high-definition CRT display, the camera is used for obtaining images on the high-definition CRT, and then a conference is held on the MCU. If other conferences are held on the MCU, the other conferences are closed, and errors introduced by the other conferences are reduced.
As shown in fig. 1, the method includes:
s110, a computer used for intercepting messages acquires data messages, wherein the data messages comprise a first message sent to a Multipoint Control Unit (MCU) by a source terminal and a second message sent to a remote terminal by the MCU.
In step S110, as shown in fig. 2, the method specifically includes:
s111, a computer used for intercepting the data message intercepts the data message, and the intercepted data message comprises a first message and a second message;
more specifically, a mirror image port is provided on the switch, and all messages on the switch can be acquired through the mirror image port. When the conference is held, the computer used for intercepting the message starts to intercept the data message at the mirror image port until the conference is held successfully and stably, and then the data of the intercepted data message is stored. The intercepted data message comprises a first message sent by a source terminal to a Multipoint Control Unit (MCU) and a second message sent by the MCU to a remote terminal.
And S112, separating the first message and the second message from the intercepted data message by the computer used for intercepting the message, and respectively analyzing.
S120, the computer used for intercepting the messages respectively obtains the same frame of image in the video code stream message of the first message and the video code stream message of the second message;
in step S130, the method specifically includes:
the computer used for intercepting the message extracts a frame of image in the first message, then traverses and inquires the image which is the same as the image extracted from the first message in the second message until the image which is the same as the image extracted from the first message is found, if the image which is the same as the image extracted from the first message is not found, the image extracted from the first message is abandoned, the frame of image is taken from the first message, and then the traversal inquiry is repeated in the second message.
Or,
the data information of the video code stream message is marked, a computer used for intercepting the message extracts a frame of image from a first message, then traverses and inquires the marking information which is the same as the image extracted from the first message in a second message until the same information is found, if the same information is not found, the image extracted from the first message is abandoned, the next frame of image is taken from the first message, and then the traversal inquiry is repeated in the second message.
S130, a computer used for intercepting the messages analyzes and obtains two different time information of the same frame of image in the two messages;
and S140, the computer used for intercepting the message calculates and obtains the video delay according to the time difference of the two different time information.
After the computer used for intercepting the message finds the image time information, the time difference is calculated in a mode that the time of the image extracted from the first message is subtracted from the time of the image extracted from the second message. The obtained time difference is the time delay generated after the same frame of image is processed by the MCU, namely the video time delay.
In another embodiment, on the basis of the above embodiment, before the step S120, the method further includes: and the computer used for intercepting the message respectively takes out the video code stream message from the first message and the second message. Specifically, the method comprises the following steps:
the first message and the second message separated by the computer used for intercepting the message both comprise an audio message, a video message and a signaling message. And respectively analyzing the separated first message and the second message and extracting a video code stream message of the pure video so as to carry out delay test through the pure video code stream message and reduce interference.
The method provided by the embodiment directly counts and analyzes the message time difference between the input MCU video image and the MCU output video image, so that the video delay of the MCU is directly obtained, the difference value of the timestamps on the images does not need to be compared, the method is irrelevant to the sampling rate of the terminal, and the problem that the sampling rate is not matched with the refresh rate does not exist. The operation flow of the test is simple, and the data accuracy and the test efficiency are improved.
An embodiment of the present invention further provides a computer, as shown in fig. 3, where the computer includes:
a message obtaining unit 210, configured to obtain a data message, where the data message includes a first message sent by a source terminal to a multipoint control unit MCU and a second message sent by the MCU to a remote terminal;
an image obtaining unit 220, configured to obtain the same frame of image in the video stream message of the first message and the video stream message of the second message respectively;
an image analysis unit 230 configured to analyze and obtain two different time information of the same frame of image in the two messages in a language;
and a video delay calculating unit 240, configured to calculate a video delay according to the time difference between the two different time information.
In other embodiments, more specifically, the message obtaining unit 210, as shown in fig. 4, includes:
a packet intercepting subunit 211, configured to intercept a data packet, where the intercepted data packet includes a first packet and a second packet;
a message separating subunit 212, configured to separate the first message and the second message from the intercepted data message, and analyze the first message and the second message respectively.
In another embodiment, based on the above embodiment, as further shown in fig. 5, the computer further includes:
a video packet separation unit 219, configured to separately extract video stream packets from the first packet and the second packet.
In other embodiments, more specifically: the image obtaining unit 220 is configured to extract a frame of image from the first message, search for an image in the second message in a traversing manner, until the image is found, the image is the same as the image extracted from the first message, discard the image extracted from the first message if the image is not found, take the next frame of image from the first message, and repeat the search in the second message.
In other embodiments, more specifically: the image obtaining unit 220 is further configured to mark data information of a video code stream message, extract a frame of image in a first message, perform traversal query on the same mark information as the image extracted in the first message in a second message until the same information is found, discard the image extracted in the first message if the same information is not found, take a next frame of image in the first message, and repeat traversal query in the second message.
The computer provided by the embodiment directly counts and analyzes the message time difference between the input MCU video image and the MCU output video image, so that the video delay of the MCU is directly obtained, the difference value of the time stamps on the images does not need to be compared, and the problem that the sampling rate is not matched with the refresh rate does not exist. The operation flow of the test is simple, and the data accuracy and the test efficiency are improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for testing video delay in a video conference is characterized by comprising the following steps:
acquiring data messages, wherein the data messages comprise a first message sent to a Multipoint Control Unit (MCU) by a source terminal and a second message sent to a remote terminal by the MCU;
respectively acquiring the same frame of image from the video code stream message of the first message and the video code stream message of the second message;
analyzing and acquiring two different time information of the same frame of image in the first message and the second message;
calculating to obtain video delay according to the time difference of the two different time information;
the acquiring the same frame of image in the video code stream message of the first message and the video code stream message of the second message respectively specifically comprises:
extracting a frame of image from the first message, traversing and inquiring the image which is the same as the image extracted from the first message in the second message until the image which is the same as the image extracted from the first message is found, discarding the image extracted from the first message if the image which is the same as the image extracted from the first message is not found, taking the next frame of image from the first message, and then repeatedly traversing and inquiring in the second message; or
The acquiring the same frame of image in the video code stream message of the first message and the video code stream message of the second message respectively specifically comprises:
marking data information of a video code stream message, extracting a frame of image from a first message, traversing and inquiring mark information which is the same as the image extracted from the first message in a second message until the same information is found, discarding the image extracted from the first message if the same information is not found, taking the next frame of image from the first message, and then repeatedly traversing and inquiring in the second message.
2. The method of claim 1, wherein the obtaining the data packet specifically comprises:
intercepting data messages, wherein the intercepted data messages comprise a first message and a second message;
and separating the first message and the second message from the intercepted data message, and analyzing the first message and the second message respectively.
3. The method of claim 2, wherein before obtaining the same frame of image in the video bitstream packet of the first packet and the video bitstream packet of the second packet, respectively, further comprising:
and respectively extracting video code stream messages from the first message and the second message.
4. A computer, comprising:
the system comprises a message acquisition unit, a multipoint control unit and a remote terminal, wherein the message acquisition unit is used for acquiring data messages, and the data messages comprise a first message sent to the MCU by a source terminal and a second message sent to the remote terminal by the MCU;
an image obtaining unit, configured to obtain the same frame of image in the video stream message of the first message and the video stream message of the second message, respectively;
the image analysis unit is used for analyzing and acquiring two different time information of the same frame of image in the first message and the second message;
the video delay calculating unit is used for calculating to obtain video delay according to the time difference of the two different time information;
the image acquisition unit is used for extracting a frame of image from the first message, searching the image which is the same as the image extracted from the first message in a traversing manner in the second message until the image which is the same as the image extracted from the first message is found, discarding the image extracted from the first message if the image which is the same as the image extracted from the first message is not found, taking the next frame of image from the first message, and repeating the searching in the traversing manner in the second message; or
The method is used for marking data information of a video code stream message, extracting a frame of image from a first message, traversing and inquiring marking information which is the same as the image extracted from the first message in a second message until the same information is found, discarding the image extracted from the first message if the same information is not found, taking the next frame of image from the first message, and then repeatedly traversing and inquiring in the second message.
5. The computer of claim 4, wherein the message acquisition unit comprises:
the message intercepting subunit is used for intercepting the data message, wherein the intercepted data message comprises a first message and a second message;
and the message separation subunit is configured to separate the first message and the second message from the intercepted data message, and analyze the first message and the second message respectively.
6. The computer of claim 5, further comprising:
and the video message separation unit is used for respectively extracting video code stream messages from the first message and the second message.
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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102158683A CN102158683A (en) | 2011-08-17 |
| CN102158683B true CN102158683B (en) | 2015-08-12 |
Family
ID=44439832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102158683B (en) |
| WO (1) | WO2012146035A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158683B (en) * | 2011-04-25 | 2015-08-12 | 中兴通讯股份有限公司 | The method of testing of video delay in video conference and computer |
| CN109309831B (en) * | 2018-12-13 | 2020-05-08 | 苏州科达科技股份有限公司 | Method and device for testing video delay 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614939A (en) * | 2003-11-06 | 2005-05-11 | 华为技术有限公司 | Realizing method for time-delaying test |
| CN101516017A (en) * | 2008-02-22 | 2009-08-26 | 中国移动通信集团公司 | Method, device and system for measuring video transmission delay of session service |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7733794B2 (en) * | 2005-06-17 | 2010-06-08 | Alcatel Lucent | Performance monitoring of frame transmission in data network OAM protocols |
| CN1909678A (en) * | 2006-08-11 | 2007-02-07 | 中国船舶重工集团公司第七○九研究所 | Delay testing method for IP video communication system |
| CN101087400B (en) * | 2007-06-26 | 2011-09-21 | 中兴通讯股份有限公司 | Video frame delay detection method and system |
| CN101668223B (en) * | 2009-09-07 | 2011-06-15 | 航天恒星科技有限公司 | Method for measuring image transmission time delay |
| CN102158683B (en) * | 2011-04-25 | 2015-08-12 | 中兴通讯股份有限公司 | The method of testing of video delay in video conference and computer |
-
2011
- 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
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614939A (en) * | 2003-11-06 | 2005-05-11 | 华为技术有限公司 | Realizing method for time-delaying test |
| CN101516017A (en) * | 2008-02-22 | 2009-08-26 | 中国移动通信集团公司 | Method, device and system for measuring video transmission delay of session service |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102158683A (en) | 2011-08-17 |
| WO2012146035A1 (en) | 2012-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102158683B (en) | The method of testing of video delay in video conference and computer | |
| US9906782B2 (en) | Source agnostic audio/visual analysis framework | |
| US9591300B2 (en) | Video streaming and video telephony downlink performance analysis system | |
| US20130091528A1 (en) | Video reproduction system, receive terminal, home gateway device, and quality control system | |
| WO2020006912A1 (en) | Method and device for analyzing network transmission quality, computer equipment and storage medium | |
| CN102655585B (en) | Video conference system and time delay testing method, device and system thereof | |
| HUE028719T2 (en) | Method and apparatus for temporally synchronizing the input bit stream of a video decoder with the processed video sequence decoded by the video decoder | |
| CN111629264B (en) | Web-based separate front-end image rendering method | |
| CN108810524B (en) | IPTV picture fault phenomenon detection method | |
| CN110691238A (en) | Video reconstruction quality testing method, device, equipment and readable storage medium | |
| CN113784118A (en) | Video quality evaluation method and device, electronic equipment and storage medium | |
| WO2023024469A1 (en) | Video quality problem determination method and apparatus, storage medium, and program product | |
| US20130120652A1 (en) | Method and apparatus for evaluating time delay of mobile video service | |
| CN117640925A (en) | Multi-path video picture consistency detection method, system and electronic equipment | |
| KR101849092B1 (en) | Method and Apparatus for Detecting Picture Breaks for Video Service of Real Time | |
| CN116962179A (en) | Network transmission optimization method and device, computer readable medium and electronic equipment | |
| CN108880925B (en) | Method and system for monitoring flow | |
| CN114422810B (en) | Multipath live broadcast synchronous calibration method based on mobile terminal broadcast director | |
| CN108574814B (en) | Data processing method and device | |
| Wang et al. | Begin with the end in mind: A unified end-to-end quality-of-experience monitoring, optimization and management framework | |
| Chen et al. | Study on relationship between network video packet loss and video quality | |
| CN108900831B (en) | Flower screen event detecting method and its detection system | |
| CN114339212A (en) | Media file processing method and device, electronic equipment and storage medium | |
| CN110602525B (en) | Method for binding and transmitting video analysis result and image frame | |
| CN108200481B (en) | RTP-PS stream processing method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20200425 |