CN101291417B - Polling method and system for videoconference system - Google Patents
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Abstract
The invention discloses a polling method and a polling system of a videoconference system, relating to the videoconference field. The polling method of the videoconference system provided by the invention comprises the following steps that: in the process that a user starts the polling operation of the videoconference system, after grouping all polled terminals, the user orderly initiates polling requests for each group of polled terminals; a system receiving the polling requests synthesizes the video data of each group of polled terminals respectively into multi-picture video data and sends the multi-picture video data to a polling terminals; after receiving the multi-picture video data, the polling terminal orderly decodes and display, so as to realize multi-picture video polling. The invention also discloses a system for realizing polling in the videoconference system. A technical proposal of the invention shortens the traversal time of the video polling for all or partial terminals in a conference, thereby improving conference efficiency.
Description
Technical Field
The present invention relates to the field of video conferencing, and in particular, to a polling method and system for a video conferencing system.
Background
A video conference system is a multimedia communication system supporting communication of sound, video and data, and includes a video conference terminal, a Multipoint Control Unit (MCU), and other devices. Video conference systems currently on the market generally conform to the ITU-T h.320 or ITU-T h.323 standards, as well as those conforming to the IETF SIP standard.
The terminal is equipment used by a user, the terminal comprises a coder-decoder which is responsible for completing compression coding and decoding of sound, video and other media, the terminal is also connected with a microphone, a camera, a display and a sound playing subsystem and used for completing input and output of sound and video, the terminal also comprises a user input interface, and the user inputs instructions and information to the terminal through the input interface. The terminal is responsible for establishing connection with the terminal of the other party, negotiating the codec capabilities of both parties and adopting the codec algorithms supported by both parties to carry out media stream communication.
The MCU is used for completing multiparty conference communication. And the terminals participating in the multiparty conference communication establish calls with the MCU and carry out interaction of media streams. The MCU is responsible for completing the switching and mixing of the media streams. For the audio media streams, the MCU usually outputs an audio media stream subjected to mixing synthesis for each terminal, and the mixing synthesis generally selects several audio media streams with the largest volume for superposition. For video, the MCU can transmit a single-picture video stream of another terminal to a certain terminal, and if the MCU supports multi-picture function, it can also synthesize videos transmitted from multiple terminals into a multi-picture image, and then transmit the multi-picture image to a certain terminal or terminals.
Some terminals also support multi-party conferencing capabilities, i.e., are capable of establishing connections with multiple terminals simultaneously. Such terminals are referred to herein as MCU-built terminals. No differentiated description is made considering that the functional logic of its multipoint conference and the separate MCU devices are similar.
At present, a multi-screen is generally synthesized by an MCU or a terminal with an MCU built therein, and finally transmitted to a receiving terminal as a video stream, and a user can control the display layout of the multi-screen, the content of each sub-screen image of the multi-screen, and the like through terminal equipment or management software of the MCU.
The display layout attribute includes the number of sub-pictures of the multi-picture, the position, size and superposition relationship of the sub-picture window in the screen, and the sub-picture content refers to an image source displayed by a certain sub-picture, for example, a certain sub-picture may be a main video of a certain meeting place in a meeting.
The video polling refers to that a terminal watches a group of terminal lists in a conference according to a sequence, for example, four terminals a, B, C and D exist in the conference, through a control interface of the terminal a or management software of an MCU, the terminal a watches a video image of the terminal B first, watches a video image of the terminal C after a fixed time slice, and watches a video image of the terminal D after a fixed time slice.
However, video polling has a disadvantage in that when the list of terminals to be polled is long, it takes a long time to perform a complete video polling round, for example, a conference containing 60 terminals, and assuming that each terminal has a video view of 5 seconds, it takes about 5 minutes to perform a round of inquiry. Thus, the polling time is too long, thereby affecting the efficiency with which the user attends the conference.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a polling method and a polling system of a video conference system, so that the conference efficiency is improved.
In order to solve the above problem, the present invention provides a polling method of a video conference system, including:
in the polling operation process of starting a video conference system by a user, the user sequentially initiates polling requests for all groups of polled terminals after grouping all polled terminals, and a system receiving the polling requests respectively synthesizes video data of all groups of polled terminals into multi-picture video data and sends the multi-picture video data to the polling terminals; and the polling terminal receives the multi-picture video data and then decodes and displays the multi-picture video data in sequence to realize multi-picture video polling.
Further, in the above method, the user determines the polling terminal and all polled terminals, and sets a multi-screen layout.
The method is further divided into the following steps:
after receiving the messages which are sent by the user and used for determining the polling terminal, setting the multi-picture layout and the polled terminal list, the system sets the multi-picture layout and the polled terminal list;
after selecting a group of polled terminals, the user sends a polling request carrying a polled terminal list to a system, the system receiving the polling request synthesizes the video data of the polled terminals into multi-picture video data and sends the multi-picture video data to the polling terminal, and the polling terminal decodes and displays the multi-picture video data after receiving the multi-picture video data;
and after a period of time, selecting a group of polled terminals and finishing polling display, and finishing the multi-picture polling operation after all polled terminals are polled.
The invention also discloses a method for realizing polling in the video conference system, in the polling operation process of starting the video conference system, the system groups all polled terminals according to the set multi-picture layout and all polled terminals, and sequentially sends the video data of each group of polled terminals to the polling terminals after respectively synthesizing the video data into multi-picture video data; and after receiving the multi-picture video data in sequence, the polling terminal decodes and displays the multi-picture video data to realize multi-picture video polling.
Further, in the method, the system takes a terminal which starts the polling operation of the video conference system as the polling terminal, and the polling terminal determines all polled terminals and sets the multi-screen layout.
The method is further divided into the following steps:
after a system selects a terminal for starting polling operation as a polling terminal, receiving a message for setting multi-picture layout and a message for a polled terminal list sent by the polling terminal, setting multi-picture layout, and storing the list;
the system divides all polled terminals into a plurality of groups according to the multi-picture layout and a polled terminal list, respectively synthesizes the video data of each group of polled terminals into a multi-picture video stream, and sequentially sends the multi-picture video stream to the polling terminals;
and after receiving the multi-picture video data, the polling terminal decodes and displays the multi-picture video data.
The invention also discloses a system for realizing polling in the video conference system, which comprises a multipoint control unit and a plurality of terminals respectively connected with the multipoint control unit, wherein:
the multi-point control unit is used for completing multi-picture polling according to the instruction of a user and synthesizing multi-picture video data;
the terminal comprises a polling terminal and a polled terminal, and is used for receiving, decoding and displaying the multi-picture video data sent by the multi-point control unit.
Further, the system further comprises a management server connected to the multipoint control unit, and a browser client connected to the management server, wherein:
the browser client is used for providing a way for a user to access the management server;
and the management server transmits the input instruction of the browser client to the multipoint control unit, wherein the browser client performs information interaction with the multipoint control unit through a multi-picture polling interface of the management server.
Further, in the system, the browser client sets a polling terminal, a polled terminal and a multi-screen layout through a multi-screen polling interface of the management server.
The multi-point control unit further comprises a multi-picture polling processing module, and the module synthesizes the videos of the polled terminals into multi-picture video data according to a polling request initiated by the browser client to the polled terminals.
The invention also discloses a system for realizing polling in the video conference system, which comprises a multipoint control unit and a plurality of terminals respectively connected with the multipoint control unit, wherein:
the multi-point control unit is used for completing a multi-picture polling function according to an instruction of a user and synthesizing multi-picture video data;
the terminal comprises a polling terminal and a polled terminal, is used for carrying out information interaction with the multipoint control unit and is also used for receiving, decoding and displaying the multi-picture video data sent by the multipoint control unit, the polling terminal further comprises a multi-picture polling interface, and the polling terminal sends the set multi-picture layout and all polled terminal lists to the multipoint control unit through the interface.
The multi-point control unit further comprises a multi-picture polling processing module which automatically divides all polled terminals into a plurality of groups according to the multi-picture layout set by the polling terminals and all polled terminal lists, and respectively synthesizes the videos of all the polled terminals into multi-picture video data.
The technical scheme of the invention shortens the traversal time of video polling of all or part of terminals in the conference, thereby improving the conference efficiency.
Drawings
FIG. 1(a) is a schematic diagram of a system architecture supporting a multi-view video polling function;
FIG. 1(b) is a flow chart of the system of FIG. 1(a) implementing multi-view video polling;
FIG. 2(a) is a schematic diagram of a system architecture supporting a multi-view video polling function;
FIG. 2(b) is a flow chart of the system of FIG. 2(a) implementing multi-view video polling;
FIG. 3(a) is a schematic diagram illustrating the display effect of the first group of terminals in the multi-view video polling in this embodiment;
FIG. 3(b) is a diagram illustrating the display effect of the second group of terminals in the multi-view video polling in this embodiment;
fig. 3(c) is a schematic diagram illustrating the display effect of the third group of terminals in the multi-view video polling in this embodiment.
Detailed Description
The following detailed description of the embodiments is made with reference to the accompanying drawings:
example 1
As shown in fig. 1(a), the system includes an MCU, and a WEB management server and a plurality of terminals respectively connected to the MCU, wherein the WEB management server is further connected to the browser client. Wherein:
the system comprises a browser client, a WEB management server and a server, wherein a user accesses the WEB management server through the browser client;
the WEB management server transmits the instruction of the browser client to the MCU, and in this embodiment, the WEB management server further includes a multi-screen polling interface through which the browser client performs information interaction with the MCU, wherein the browser client can initiate a multi-screen polling operation to the MCU through the interface, for example, setting a polling terminal, a polled terminal, and a multi-screen layout;
the system comprises an MCU, a multi-picture polling processing module and a multi-picture polling processing module, wherein the MCU is used for synthesizing multi-picture video data and finishing a multi-picture polling function according to an instruction of a browser client;
and any terminal can be used as a polling terminal and is used for receiving, decoding and displaying the multi-picture video stream sent by the MCU.
The above system does not limit the number of devices connected, for example, one WEB management server may connect multiple MCU devices, so as to manage multiple MCUs simultaneously.
Of course, in other embodiments, the WEB management server and the browser client may be replaced by other implementation modes, for example, a dedicated MCU management software may be developed instead, and the dedicated software should include a multi-screen polling man-machine interaction function. In addition, the MCU may also be implemented in other dedicated hardware, such as a general purpose computer or the like. The terminal can also be implemented by software based on a PC. Of course, in some simple application environments, related components of the management interface may also be built into the MCU device; in a complex environment, the WEB management server, the client browser and the MCU are independent devices.
In the process of processing the multi-picture video polling by the system, a user controls the multi-picture polling operation in a way of accessing a WEB management server through a browser, as shown in fig. 1(b), the process is divided into the following steps:
step 101: the browser client starts multi-picture polling operation, sends a polling starting message to the MCU through the WEB management server, and the MCU enters a multi-picture polling state after receiving the message;
step 102: after the browser client selects the polling terminal, sending a polling terminal selection message to the MCU through the WEB management server, and determining the polling terminal by the MCU according to the received message;
step 103: the browser client sets a multi-picture layout, sends a multi-picture layout setting message to the MCU through the WEB management server, and the MCU sets the multi-picture layout according to the received message;
step 104: the browser client selects a list of terminals to be polled, for example, a user may select a polled list of terminals from a list of conference members;
step 105 a: after a browser client selects a first batch of polled terminals to be watched, a multi-picture synthetic message is sent to an MCU (microprogrammed control unit) through a WEB management server, wherein the message comprises a list of the first batch of polled terminals;
step 105 b: the MCU synthesizes multi-picture video streams of a first batch of polled terminals after receiving the message, and sends the multi-picture video streams to the polling terminals;
step 106 a: after a period of time, after the browser client selects a second batch of polled terminals to watch, sending a multi-picture synthetic message to the MCU through the WEB management server, wherein the message comprises a list of the second batch of polled terminals;
step 106 b: after receiving the message, the MCU synthesizes a second batch of multi-picture video streams of the polled terminal and sends the second batch of multi-picture video streams to the polling terminal;
step 107 a: after selecting to watch the last batch of polled terminals, the browser client sends a multi-picture synthesis message to the MCU through the WEB management server, wherein the message comprises a list of the last batch of polled terminals, and after polling for one turn, the browser client continues to watch from the beginning and returns to the step 105 a;
step 107 b: after receiving the message, the MCU synthesizes the multi-picture video streams of the last batch of polled terminals and sends the multi-picture video streams to the polling terminals;
step 108: the browser client can send a message for stopping the multi-picture polling to the MCU through the WEB management server, and the MCU exits from the multi-picture polling state after receiving the message.
The browser client may also send a message to stop the multi-screen polling to the MCU through the WEB management server at any time of executing any one of the above steps 101 to 107, and the MCU exits the multi-screen polling state after receiving the message.
In other embodiments, the multi-screen layout and the list of polled terminals may be set by the MCU.
Example 2
Next, another system supporting the multi-screen polling function is described, and as shown in fig. 2(a), unlike the system proposed in embodiment 1, the multi-screen polling man-machine interface is built in the terminal device, so that the WEB management server and the browser client are omitted. Wherein,
the terminal newly adds a function of requesting the MCU device for multi-picture polling operation, i.e. the user inputs various polling operation instructions to the MCU through the multi-picture polling interface on the terminal, wherein the terminal with the multi-picture polling function can also be used as a polling terminal.
The process of the system for processing the multi-screen polling is that the user controls the multi-screen polling operation through the terminal, and specifically includes the following steps, as shown in fig. 2 (b):
step 201: the user starts the multi-picture polling operation through a multi-picture polling interface arranged in the terminal, sends a polling starting message to the MCU, and the MCU enters a multi-picture polling state after receiving the message.
Step 202: the MCU automatically selects the current speaking terminal as a polling terminal;
step 203: the polling terminal sends a message for setting the multi-picture layout to the MCU, and the MCU sets the multi-picture layout after receiving the message;
step 204: the polling terminal selects a polled terminal and then sends a polled terminal list message to the MCU, and the MCU stores the list;
step 205 (1): the MCU automatically synthesizes multi-picture video streams of a first batch of terminals according to the multi-picture layout and the polled terminal list, and sends the multi-picture video streams to the polling terminals;
step 205 (2): the MCU automatically synthesizes multi-picture video streams of a second batch of terminals according to the multi-picture layout and the polled terminal list, and sends the multi-picture video streams to the polling terminals;
step 205 (n): the MCU automatically synthesizes multi-picture video streams of the last batch of terminals according to the multi-picture layout and the polled terminal list, sends the multi-picture video streams to the polling terminal, and after polling for one turn, the user continues to watch from the beginning and returns to the step 205;
step 206: the user can send a message for stopping the multi-picture polling to the MCU through the WEB management server, and the MCU exits from the multi-picture polling state after receiving the message.
In other embodiments, the multi-screen layout and the list of polled terminals may be set by the MCU.
In the above embodiments 1 and 2, when there are 10 polled terminals and the layout of the multi-screen is 4 screens, the effect of the multi-screen video polling displayed on the terminals is as shown in fig. 3, the polling terminal first sees the multi-screen video image synthesized by the video images of the terminals 1, 2, 3 and 4 as shown in fig. 3 (a); after a period of time, the polling terminal will see the multi-picture video image synthesized by the video images of the terminal 5, the terminal 6, the terminal 7 and the terminal 8, as shown in fig. 3 (b); after a certain time period, the polling terminal sees the terminals 9, 10, as shown in fig. 3(c), wherein there are two sprite areas displayed as background images, e.g. blue background, since there are only two terminals to be displayed in the last batch. Of course, it is possible to display the pictures of the terminals 7 and 8 repeatedly, or to display the latest current pictures of the terminals 1 and 2 together with the combined pictures of the terminals 9 and 10, which is not limited in the present invention. And when all the terminals are polled, starting a new round of polling again until the polling operation is stopped.
In other embodiments, one or some sub-frames in the multi-frame can be displayed fixedly with one or some video sources, for example, one sub-frame is used to display the auxiliary video image in the h.323 standard fixedly, and other non-fixed sub-frames are used to display other terminals instead.
It can be seen from the above embodiments that the technical solution of the present invention is different from the existing video polling method in that the terminals can watch the video images of a group of terminals at a time, and the MCU is responsible for synthesizing the video images of a group of terminals into a multi-picture video image, thereby shortening the time for polling the video images of the whole participating terminals by one terminal, and greatly improving the efficiency of the video conference.
In addition, the present invention is capable of other embodiments, and it is intended that various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A polling method for a video conference system, comprising:
in the polling operation process of starting a video conference system by a user, the user sequentially initiates polling requests for all groups of polled terminals after grouping all polled terminals, and a system receiving the polling requests respectively synthesizes video data of all groups of polled terminals into multi-picture video data and sends the multi-picture video data to the polling terminals; and the polling terminal receives the multi-picture video data and then decodes and displays the multi-picture video data in sequence to realize multi-picture video polling.
2. The method of claim 1,
the user determines the polling terminal and all polled terminals and sets a multi-screen layout.
3. A method according to claim 1 or 2, characterized in that the method is further divided into the following steps:
after receiving the messages which are sent by the user and used for determining the polling terminal, setting the multi-picture layout and the polled terminal list, the system sets the multi-picture layout and the polled terminal list;
after selecting a group of polled terminals, the user sends a polling request carrying a polled terminal list to a system, the system receiving the polling request synthesizes the video data of the polled terminals into multi-picture video data and sends the multi-picture video data to the polling terminal, and the polling terminal decodes and displays the multi-picture video data after receiving the multi-picture video data;
and after a period of time, selecting a group of polled terminals and finishing polling display, and finishing the multi-picture polling operation after all polled terminals are polled.
4. A method for performing polling in a video conferencing system,
in the polling operation process of starting the video conference system, the system groups all polled terminals according to the set multi-picture layout and all polled terminals, respectively synthesizes the video data of each group of polled terminals into multi-picture video data, and then sequentially sends the multi-picture video data to the polled terminals; and after receiving the multi-picture video data in sequence, the polling terminal decodes and displays the multi-picture video data to realize multi-picture video polling.
5. The method of claim 1,
the system takes a terminal which starts the polling operation of the video conference system as the polling terminal, and the polling terminal determines all polled terminals and sets a multi-picture layout.
6. A method according to claim 4 or 5, characterized in that the method is further divided into the following steps:
after a system selects a terminal for starting polling operation as a polling terminal, receiving a message for setting multi-picture layout and a message for a polled terminal list sent by the polling terminal, setting multi-picture layout, and storing the list;
the system divides all polled terminals into a plurality of groups according to the multi-picture layout and a polled terminal list, respectively synthesizes the video data of each group of polled terminals into a multi-picture video stream, and sequentially sends the multi-picture video stream to the polling terminals;
and after receiving the multi-picture video data, the polling terminal decodes and displays the multi-picture video data.
7. A system for implementing polling in a video conferencing system, the system comprising a multipoint control unit, and a plurality of terminals respectively connected to the multipoint control unit, wherein:
the multi-point control unit is used for completing multi-picture polling according to the instruction of a user and synthesizing multi-picture video data;
the terminal comprises a polling terminal and a polled terminal, and is used for receiving, decoding and displaying the multi-picture video data sent by the multi-point control unit.
8. The system of claim 7, further comprising a management server coupled to the multipoint control unit, and a browser client coupled to the management server, wherein:
the browser client is used for providing a way for a user to access the management server;
and the management server transmits the input instruction of the browser client to the multipoint control unit, wherein the browser client performs information interaction with the multipoint control unit through a multi-picture polling interface of the management server.
9. The system of claim 8,
and the browser client side is provided with a polling terminal, a polled terminal and a multi-picture layout through a multi-picture polling interface of the management server.
10. The system of claim 7, 8 or 9,
the multi-point control unit further comprises a multi-picture polling processing module, and the module synthesizes the videos of the plurality of polled terminals into multi-picture video data according to a polling request initiated by the browser client for the plurality of polled terminals.
11. A system for implementing polling in a video conferencing system, the system comprising a multipoint control unit, and a plurality of terminals respectively connected to the multipoint control unit, wherein:
the multi-point control unit is used for completing a multi-picture polling function according to an instruction of a user and synthesizing multi-picture video data;
the terminal comprises a polling terminal and a polled terminal, is used for carrying out information interaction with the multipoint control unit and is also used for receiving, decoding and displaying the multi-picture video data sent by the multipoint control unit, the polling terminal further comprises a multi-picture polling interface, and the polling terminal sends the set multi-picture layout and all polled terminal lists to the multipoint control unit through the interface.
12. The system of claim 11,
the multi-point control unit further comprises a multi-picture polling processing module which automatically divides all polled terminals into a plurality of groups according to the multi-picture layout set by the polling terminals and all polled terminal lists, and respectively synthesizes the videos of all the polled terminals into multi-picture video data.
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| CN101873487B (en) * | 2010-02-09 | 2012-08-22 | 杭州海康威视数字技术股份有限公司 | Decoding method, decoder and system based on audio/video monitoring system |
| CN101860715A (en) * | 2010-05-14 | 2010-10-13 | 中兴通讯股份有限公司 | Multi-picture synthesis method and system and media processing device |
| CN101938626B (en) * | 2010-09-15 | 2013-10-30 | 杭州海康威视数字技术股份有限公司 | Video session terminal, system, and method |
| CN102572370B (en) | 2011-01-04 | 2014-06-11 | 华为终端有限公司 | Video conference control method and conference terminal |
| CN104349117B (en) | 2013-08-09 | 2019-01-25 | 华为技术有限公司 | More content media communication means, apparatus and system |
| CN104980683A (en) * | 2014-04-08 | 2015-10-14 | 深圳市潮流网络技术有限公司 | Implement method and device for video telephone conference |
| CN105306872B (en) * | 2015-10-21 | 2019-03-01 | 华为技术有限公司 | Control the methods, devices and systems of multipoint videoconference |
| CN105847263A (en) * | 2016-03-31 | 2016-08-10 | 乐视控股（北京）有限公司 | Live video streaming method, device and system |
| CN108718399B (en) * | 2018-07-09 | 2023-12-08 | 深圳市潮流网络技术有限公司 | Video conference layout method based on browser page |
| CN109963107B (en) * | 2019-02-20 | 2021-10-08 | 视联动力信息技术股份有限公司 | Audio and video data display method and system |
| CN110557599B (en) * | 2019-09-19 | 2021-10-08 | 上海赛连信息科技有限公司 | Method and device for polling video conference |
| CN110933359B (en) * | 2020-01-02 | 2021-07-02 | 随锐科技集团股份有限公司 | Intelligent video conference layout method and device and computer readable storage medium |
| CN112650464B (en) * | 2021-01-05 | 2024-02-06 | 深圳市捷视飞通科技股份有限公司 | Video picture display method, apparatus, computer device and storage medium |
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