WO2023246883A1

WO2023246883A1 - Video conference method, electronic device and computer storage medium

Info

Publication number: WO2023246883A1
Application number: PCT/CN2023/101775
Authority: WO
Inventors: 毛展召
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-06-21
Filing date: 2023-06-21
Publication date: 2023-12-28
Also published as: CN117319593A

Abstract

Provided in the present disclosure is a video conference method. The method is applied to a multipoint control unit (MCU); the MCU, a first video conference terminal and a second video conference terminal access the same transmission network; and the first video conference terminal and the second video conference terminal access the same audio/video signal and both are connected to the same switcher. The method comprises: receiving a switching operation notification message sent by a second video conference terminal; configuring to the second video conference terminal the current state parameters of a first video conference terminal that are locally stored; and sending a switching operation response message to the second video conference terminal, wherein the switching operation response message is used for indicating that the second video conference terminal is a main terminal. Further provided in the present disclosure are a video conference method respectively applied to a switcher and a second video conference terminal, and an electronic device and a computer storage medium.

Description

Video conferencing method, electronic equipment and computer storage media

Cross-references to related applications

This application claims priority from Chinese Patent Application No. 202210703462.4 filed on June 21, 2022, the contents of which are incorporated herein by reference in their entirety.

Technical field

The present invention relates to the field of multimedia communication technology, and in particular to video conferencing methods, electronic equipment and computer storage media.

Background technique

Video conferencing is a multimedia communication technology that generally consists of a video conferencing terminal, a transmission network, and a multipoint control unit (MCU). It can realize image, video and audio between two or more locations. Interaction function of voice and data, using communication equipment and network to hold meetings. With the development and maturity of video conferencing technology, people are getting closer and closer to this technology, and there are more and more scenarios for communicating through video conferencing. Video conferencing allows a group of people who are far apart to join a meeting and achieve efficient communication.

Correspondingly, people have increasingly higher quality requirements for video conferencing, especially for some important meetings. When terminals experience emergencies such as power outages, network outages, video packet loss, and sound freezes, if they cannot return to normal in time, it will be catastrophic for the venue. Therefore, terminal backup is required to deal with these emergencies. .

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the present disclosure provides a video conferencing method, electronic equipment and computer storage medium.

In a first aspect, embodiments of the present disclosure provide a video conferencing method, which is applied to a multipoint control unit MCU. The MCU is connected to the same transmission network as a first video conferencing terminal and a second video conferencing terminal. The first video conferencing terminal is connected to the same transmission network. The video conferencing terminal and the second video conferencing terminal access the same audio and video signals and are both connected to the same switch; the method includes: receiving a switching operation notification message sent by the second video conferencing terminal; converting the locally stored Configuring the current state parameters of the first video conferencing terminal to the second video conferencing terminal; and sending a switching operation response message to the second video conferencing terminal, where the switching operation response message is used to indicate the second video conferencing terminal. The conference terminal is the main terminal.

In a second aspect, embodiments of the present disclosure provide another video conferencing method, applied to a switch. The switch is connected to both a first video conferencing terminal and a second video conferencing terminal. The first video conferencing terminal and all The second video conferencing terminal and the MCU are connected to the same transmission network, and the first video conferencing terminal and the second video conferencing terminal are connected to the same audio and video signal; the method includes: in response to detecting the An abnormality occurs in the first video conferencing terminal and the video conferencing service is currently carried by the first video conferencing terminal. The video conferencing service is switched from the first video conferencing terminal to the second video conferencing terminal.

In a third aspect, embodiments of the present disclosure provide yet another video conferencing method, applied to a second video conferencing terminal. The second video conferencing terminal is connected to the same transmission network as the first video conferencing terminal and the MCU. The third video conferencing terminal is connected to the same transmission network. The second video conferencing terminal and the first video conferencing terminal access the same audio and video signals and are both connected to the same switch; the method includes: In response to the switch switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal, sending a switching operation notification message to the MCU; and receiving a switching operation response message sent by the MCU.

In a fourth aspect, embodiments of the present disclosure provide an electronic device, including: one or more processors; and a storage device on which one or more programs are stored; wherein, when the one or more programs are When executed by one or more processors, the one or more processors implement the video conferencing method as described above.

In a fifth aspect, embodiments of the present disclosure provide a computer storage medium on which a computer program is stored, wherein when the program is executed, the video conferencing method as described above is implemented.

Description of the drawings

Figure 1 is a schematic flowchart 1 of a video conferencing method provided by an embodiment of the present disclosure;

Figure 2 is a schematic diagram of a video conferencing system network provided by an embodiment of the present disclosure;

Figure 3 is a schematic diagram of communication messages between a video conferencing terminal and an MCU provided by an embodiment of the present disclosure;

Figure 4 is a schematic flowchart 2 of the video conferencing method provided by an embodiment of the present disclosure;

Figure 5 is a schematic flowchart three of the video conferencing method provided by an embodiment of the present disclosure;

Figure 6 is a schematic diagram 2 of the communication messages between the video conferencing terminal and the MCU provided by the embodiment of the present disclosure;

Figure 7 is a schematic flowchart 4 of the video conferencing method provided by an embodiment of the present disclosure;

Figure 8 is a schematic flowchart 5 of the video conferencing method provided by an embodiment of the present disclosure.

Detailed ways

Example embodiments will be described more fully below with reference to the accompanying drawings, which may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully understand the scope of the disclosure to those skilled in the art.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terminology used herein is used to describe particular embodiments only and is not intended to limit the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprising" and/or "made of" are used in this specification, the presence of said features, integers, steps, operations, elements and/or components is specified but does not exclude the presence or Add one or more other features, entities, steps, operations, elements, components, and/or groups thereof.

Embodiments described herein may be described with reference to plan and/or cross-sectional illustrations, with the aid of idealized schematic illustrations of the present disclosure. Accordingly, example illustrations may be modified based on manufacturing techniques and/or tolerances. Therefore, the embodiments are not limited to those shown in the drawings but include modifications of configurations formed based on the manufacturing process. Accordingly, the regions illustrated in the figures are of a schematic nature and the shapes of the regions shown in the figures are illustrative of the specific shapes of regions of the element and are not intended to be limiting.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant art and the present disclosure, and will not be construed as having idealized or excessive formal meanings, Unless expressly so limited herein.

In related technologies, physical 1+1 backup is usually used to ensure the normal progress of video conferencing, that is, two sets of video conferencing systems are used, one as the main video conferencing system and the other as the backup video conferencing system. Two sets of video conferencing systems A communication connection is established between them, and when the main video conferencing system suddenly encounters an abnormality, it switches to the backup video conferencing system. This leads to networking It is complicated, takes up a lot of resources (two sets of MCUs are required on the network, and two terminals are used in each conference room), and the switching operation is complex and takes a long time. There are many problems. Moreover, most other terminal backup solutions use cold backup, that is, the backup system is not installed or configured to run in the same or similar operating environment as the currently used system, and the application system data is not loaded into the backup system in time, which will also lead to the occupation of resources. There are many problems, and the switching operation is complex and time-consuming.

In view of this, embodiments of the present disclosure propose to implement hot backup by changing the networking method, that is, adding the backup terminal to the video conference system where the main terminal is located, and connecting the main terminal and the backup terminal to the same audio and video signal , to ensure data synchronization between the main terminal and the backup terminal, connect the main terminal and the backup terminal to the same switch. Once the main terminal has an abnormality, the switch can switch the video conferencing service from the main terminal. To the backup terminal, the switching operation is simple and takes a short time.

Correspondingly, embodiments of the present disclosure provide a video conferencing method, which is applied to an MCU. The MCU is connected to the same transmission network as the first video conferencing terminal and the second video conferencing terminal. The first video conferencing terminal and the second video conferencing terminal are connected to the same transmission network. The second video conferencing terminal accesses the same audio and video signals and is connected to the same switch.

As shown in Figure 1, the video conferencing method may include the following steps S11 to S13 performed by the MCU.

In step S11, receive the switching operation notification message sent by the second video conference terminal.

In step S12, configure the locally stored current state parameters of the first video conference terminal to the second video conference terminal.

In step S13, a switching operation response message is sent to the second video conferencing terminal, where the switching operation response message is used to indicate that the second video conferencing terminal is the master terminal.

Wherein, the switch detects an abnormality in the first video conferencing terminal (for example, network disconnection, data packet loss, automatic shutdown, failure to receive media data, sound freeze, etc.) and is currently controlled by the When the first video conferencing terminal carries the video conferencing service (that is, the first video conferencing terminal serves as the active terminal), the video conferencing service is switched from the first video conferencing terminal to the second video conferencing terminal. The terminal serves as the primary terminal. After the switching is completed, the second video conference terminal sends the switching operation notification message to the MCU to notify the MCU that the switching operation has occurred.

The same transmission network that the MCU and the first video conferencing terminal and the second video conferencing terminal are connected to can be an IP network (a packet switching network using IP protocol (Internet Protocol)), E1 local area network, WIFI ( Wireless-Fidelity, wireless fidelity network) and so on. The first video conferencing terminal and the second video conferencing terminal access the same audio and video signals, which may be achieved by connecting the LAN2 port to the same matrix.

As shown in Figure 2, which is a schematic networking diagram of the video conferencing system provided by an embodiment of the present disclosure, it can be seen that the LAN2 port of the first video conferencing terminal and the LAN2 port of the second video conferencing terminal are both connected to the switch to achieve Automatic switching of audio and video output. The audio and video input sources of the first video conferencing terminal and the audio and video input sources of the second video conferencing terminal are shared through the matrix to ensure that the first video conferencing terminal and the second video conferencing terminal access the same audio and video signals.

The locally stored current status parameters of the first video conference terminal refer to parameters used to characterize the current status of the first video conference terminal in the video conference. For example, they may include: whether it is currently in the chairman role, broadcast Status, selected content, multi-viewer status, TV wall monitoring information, whether to send or receive auxiliary video, whether to mix audio, whether to mute, etc. Of course, the conference management system in the MCU can also determine the current status of the first video conference terminal in the video conference after the MCU receives the switching operation notification message to determine the current status parameters of the first video conference terminal. , for example, determine whether the first video conferencing terminal is currently a broadcast source, which terminals the first video conferencing terminal is currently viewing, whether the first video conferencing terminal is currently in a multi-screen state, whether the first video conferencing terminal currently uses a video wall Plans, etc.

After receiving the switching operation notification message sent by the second video conferencing terminal, it means that the second video conferencing terminal is outputting audio and video at this time, which means that the switcher switches the video conferencing service from the first video conferencing terminal to the second video conferencing terminal. Conference terminal, at this time, the second video conference terminal needs to inherit the status of the second video conference terminal, so the MCU configures the current status parameters of the first video conference terminal to the second video conference terminal.

It can be seen from the above steps S11-S13 that the video conferencing method provided by the embodiment of the present disclosure connects the first video conferencing terminal, the second video conferencing terminal and the MCU to the same transmission network, and the first video conferencing terminal The second video conferencing terminal accesses the same audio and video signals and is connected to the same switch. When receiving the switching operation notification message sent by the second video conferencing terminal, the MCU can learn that the switch switches the video conferencing service from the first video conferencing terminal to the second video conferencing terminal. The video conferencing terminal switches to the second video conferencing terminal, then configures the locally stored current status parameters of the first video conferencing terminal to the second video conferencing terminal, and sends a switching operation response to the second video conferencing terminal. message, the switching operation response message is used to indicate that the second video conferencing terminal is the primary terminal. Compared with the traditional networking method and cold backup method that use two sets of MCUs and two terminals in each conference room, the networking method is simple and effectively saves energy; the switching operation is simple and the switching time is short, and users almost The switching operation is not detected, providing users with a good video conferencing experience.

Furthermore, the current cold backup solution still has the disadvantage of a single protocol supported by the terminal, which cannot meet the communication needs of customers using different communication methods. In view of this, the present disclosure also proposes that in some embodiments, the interface between the MCU and the first video conferencing terminal and the second video conferencing terminal adopts FECC (Camera Control Signaling Protocol) to communicate. .

The interface between the MCU and the video conferencing terminal uses FECC for communication, which is decoupled from the specific communication protocol to ensure that the terminal can support the H.323 protocol proposed by ITU-T, the SIP protocol proposed by IETF, H320 (E1 special project), etc. Multiple protocols.

For example, the message exchange data structure between the MCU and the video conferencing terminal is T_FECC_AS_ChangeOver, using the H.281 extended protocol, and the non-standard message code is 0x21. Since the FECC channel is a UDP (User Datagram Protocol) channel, in order to ensure the reliability of message transmission, the peer needs to send a response to the corresponding message after receiving the message. The ucSeqNo of the response message is consistent with the ucSeqNo of the received message. , the sending end keeps retransmitting the message before receiving the response message from the opposite end. The ucSeqNo in the data structure increases by 1 each time a message is sent, which makes it easier for the opposite end to distinguish the order of message sending.

As shown in Figure 3, the msgType (message type) of the switching operation notification message sent by the second video conferencing terminal to the MCU can be e_AS_Negociation, which is used to notify the MCU of the current audio and video output and output status by the second video conferencing terminal. is T_AS_Negociation, then after receiving the e_AS_Negociation message sent by the second video conferencing terminal, the MCU can send an e_AS_NegociationACK message, that is, a switching operation response message, to the second video conferencing terminal to indicate the role of the second video conferencing terminal as the master terminal.

When the first video conferencing terminal and the second video conferencing terminal join the conference, the conference management system in the MCU sets the initial active and backup status of the first video conferencing terminal and the second video conferencing terminal. The conference management system fills in the terminal message The initial active/standby status is sent to other modules of the MCU, and the other modules of the MCU notify the first video conference terminal and the second video conference terminal of the corresponding initial active/standby status.

Correspondingly, in some embodiments, before receiving the switching operation notification message sent by the second video conferencing terminal (ie step S11), as shown in Figure 4, the method may further include (by the The MCU performs the following steps S21 to S23.

In step S21, the first video conference terminal and the second video conference terminal are added to the target video conference according to the local address book.

In step S22, the initial active and standby status of the first video conferencing terminal is set as the main terminal, and the initial active and standby status of the second video conferencing terminal is set as the standby terminal.

In step S23, corresponding initial active and standby status notification messages are sent to the first video conference terminal and the second video conference terminal respectively.

Among them, the MCU's local address book is used to maintain the addresses of video conferencing terminals that meet the conditions for participating in video conferencing. When adding the first video conferencing terminal and the second video conferencing terminal to the address book, the MCU The backup type of the second video conferencing terminal is modified, for example, it can be modified to "restore hot backup", indicating that both the first video conferencing terminal and the second video conferencing terminal are hot backup type video conferencing terminals.

When receiving the video conference initiation instruction and the first video conference terminal and the second video conference terminal are both designated participating terminals, the MCU adds the first video conference terminal and the second video conference terminal to the destination video conference according to the address book. And set the initial active and standby status of the first video conferencing terminal as the main terminal, set the initial active and standby status of the second video conferencing terminal as the standby terminal, and then notify the first video conferencing terminal and the second video conferencing terminal of the corresponding information. Initial active and standby status.

In order to provide effective data support for operation, maintenance and developers, and facilitate them to check the data to determine the time and cause of the problem, so as to facilitate subsequent timely perception and solution of the problem, the MCU can also record information related to the switching operation.

Correspondingly, in some embodiments, as shown in Figure 5, after receiving the switching operation notification message sent by the second video conferencing terminal (ie, step S11), the method may further include the following steps S14 and S15.

In step S14, in response to receiving the switching reason notification message forwarded by the second video conferencing terminal, return a switching reason confirmation message to the second video conferencing terminal; wherein the switching reason notification message is the switcher Sent to the second video conferencing terminal.

In step S15, the log is updated according to the switching operation notification message and the switching reason notification message.

After switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal, the switcher can notify the second video conferencing terminal of the reason for the switching operation, and the second video conferencing terminal can forward the switching reason notification message to MCU for its records.

As shown in Figure 6, when the video conferencing terminal performs a switching action, the e_AS_SwitchInd message can be sent to the MCU to notify the MCU of the reason for the switching of the video conferencing terminal. After receiving the e_AS_SwitchInd message, the MCU can send the e_AS_SwitchAck message to the video conferencing terminal for confirmation.

In addition to recording information related to the switching operation, the video conferencing terminal currently used as the active terminal is displayed in real time on the conference control page of the MCU. That is to say, before configuring the current status parameters of the first video conferencing terminal to the second video conferencing terminal, the real-time display on the conference control page of the MCU is always the first video conferencing terminal, then the first video conferencing terminal After the current status parameters are configured to the second video conferencing terminal, the second video conferencing terminal has officially become the master terminal, and the MCU needs to display the second video conferencing terminal on the conference control page.

Correspondingly, in some embodiments, the initial active and standby status of the first video conferencing terminal is set as the active terminal, and the initial active and standby status of the second video conferencing terminal is set as standby (i.e. After step S22) and before configuring the locally stored current status parameters of the first video conferencing terminal to the second video conferencing terminal (ie, step S12), the method may further include the following steps: the MCU The identification of the first video conferencing terminal is displayed on the local conference control page. After configuring the locally stored current status parameters of the first video conference terminal to the second video conference terminal (ie, step S12), the method may further include the following steps: the MCU control page The identification of the second video conferencing terminal is displayed in .

The video conferencing method improved by the embodiment of the present disclosure can also be applied to a switch. The switch is connected to both the first video conferencing terminal and the second video conferencing terminal. The first video conferencing terminal and the second video conferencing terminal are connected to the switch. The conference terminal and the MCU are connected to the same transmission network, and the first video conference terminal and the second video conference terminal are connected to the same audio and video signals. As shown in Figure 7, the method may include the following step S31 performed by the switch.

In step S31, in response to detecting that an abnormality occurs in the first video conferencing terminal and that the video conferencing service is currently carried by the first video conferencing terminal, the video conferencing service is switched from the first video conferencing terminal to the first video conferencing terminal. The second video conferencing terminal.

In some embodiments, after switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal (ie, step S31), the method may further include the following steps: The second video conferencing terminal sends a switching reason notification message, so that the second video conferencing terminal forwards the switching reason notification message to the MCU.

The video conferencing method improved by the embodiment of the present disclosure can also be applied to a second video conferencing terminal. The second video conferencing terminal is connected to the same transmission network as the first video conferencing terminal and MCU. The second video conferencing terminal Access the same audio and video signals as the first video conferencing terminal and both are connected to the same switch. As shown in Figure 8, the method may include the following steps S41 and S42 performed by the second video conference terminal.

In step S41, in response to the switch switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal, a switching operation notification message is sent to the MCU.

In step S42, the switching operation response message sent by the MCU is received.

In some embodiments, after sending the switching operation notification message to the MCU (ie, step S41), the method may further include the following steps: receiving a switching reason notification message sent by the switch; The reason notification message is forwarded to the MCU, so that the MCU updates the log according to the switching operation notification message and the switching reason notification message.

In addition, embodiments of the present disclosure also provide an electronic device, including:

one or more processors;

A storage device on which one or more programs are stored;

When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement any video conferencing method as described above.

In addition, embodiments of the present disclosure also provide a computer storage medium on which a computer program is stored, wherein when the program is executed, any of the aforementioned video conferencing methods is implemented.

Those of ordinary skill in the art can understand that all or some steps in the methods disclosed above and functional modules/units in the devices can be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may consist of several physical components. Components execute cooperatively. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is known to those of ordinary skill in the art, the term computer storage media includes volatile and Non-volatile, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disk (DVD) or other optical disk storage, magnetic cassettes, tapes, disk storage or other magnetic storage devices, or may Any other medium used to store the desired information and that can be accessed by a computer. Additionally, it is known to those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted in a general illustrative sense only and not for purpose of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone, or may be used in conjunction with other embodiments, unless expressly stated otherwise. Features and/or components used in combination. Accordingly, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

A video conferencing method applied to a multipoint control unit MCU, wherein the MCU, a first video conferencing terminal and a second video conferencing terminal are connected to the same transmission network, and the first video conferencing terminal and the third video conferencing terminal are connected to the same transmission network. Two video conferencing terminals access the same audio and video signals and are both connected to the same switch; the method includes:

Receive a switching operation notification message sent by the second video conferencing terminal;

Configuring the locally stored current status parameters of the first video conferencing terminal to the second video conferencing terminal; and

A switching operation response message is sent to the second video conferencing terminal, where the switching operation response message is used to indicate that the second video conferencing terminal is the master terminal.
The method according to claim 1, wherein before receiving the switching operation notification message sent by the second video conferencing terminal, the method further includes:

Add the first video conference terminal and the second video conference terminal to the destination video conference according to the local address book;

Set the initial active and standby status of the first video conferencing terminal as the active terminal, and set the initial active and standby status of the second video conferencing terminal as the standby terminal; and

Send corresponding initial active/standby status notification messages to the first video conference terminal and the second video conference terminal respectively.
The method according to claim 2, wherein after receiving the switching operation notification message sent by the second video conferencing terminal, the method further includes:

In response to receiving the switching reason notification message forwarded by the second video conferencing terminal, returning a switching reason confirmation message to the second video conferencing terminal; wherein the switching reason notification message is sent by the switcher to the third video conferencing terminal. 2 video conferencing terminals; and

The log is updated according to the switching operation notification message and the switching reason notification message.
The method according to claim 2, wherein the initial active and standby status of the first video conferencing terminal is set as the active terminal, and the initial active and standby state of the second video conferencing terminal is set as standby. Afterwards, before configuring the locally stored current status parameters of the first video conference terminal to the second video conference terminal, the method further includes: displaying the first video conference in a local conference control page. the identification of the terminal; and

After configuring the locally stored current status parameters of the first video conferencing terminal to the second video conferencing terminal, the method further includes: displaying the second video conferencing terminal in the conference control page. logo.
A video conferencing method, applied to a switch, wherein the switch is connected to both a first video conferencing terminal and a second video conferencing terminal, and the first video conferencing terminal and the second video conferencing terminal are connected to an MCU Accessing the same transmission network, the first video conferencing terminal and the second video conferencing terminal accessing the same audio and video signals; the method includes:

In response to detecting that an abnormality occurs in the first video conferencing terminal and that the video conferencing service is currently carried by the first video conferencing terminal, switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal.
The method according to claim 5, wherein after switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal, the method further includes:

Send a switching reason notification message to the second video conferencing terminal, so that the second video conferencing terminal forwards the switching reason notification message to the MCU.
A video conferencing method, applied to a second video conferencing terminal, wherein the second video conferencing terminal, the first video conferencing terminal, and the MCU are connected to the same transmission network, and the second video conferencing terminal and the third video conferencing terminal are connected to the same transmission network. A video conference terminal accesses the same audio and video signals and is connected to the same switch; the method includes:

In response to the switch switching the video conferencing service from the first video conferencing terminal to the second video conferencing terminal, sending a switching operation notification message to the MCU; and

Receive the switching operation response message sent by the MCU.
The method according to claim 7, wherein after sending the switching operation notification message to the MCU, the method further includes:

Receive the switching reason notification message sent by the switch; and

The switching reason notification message is forwarded to the MCU, so that the MCU updates a log according to the switching operation notification message and the switching reason notification message.
An electronic device including:

one or more processors; and

A storage device on which one or more programs are stored;

When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the video conferencing method according to any one of claims 1-8.
A computer storage medium on which a computer program is stored, wherein when the program is executed, the video conferencing method according to any one of claims 1-8 is implemented.