CN212696104U

CN212696104U - Audio and video conference recording and broadcasting system

Info

Publication number: CN212696104U
Application number: CN202021830008.8U
Authority: CN
Inventors: 朱玉荣; 宋向阳
Original assignee: Beijing Wenxiang Information Technology Co ltd
Current assignee: Anhui Wenxiang Technology Co.,Ltd.
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-03-12
Anticipated expiration: 2030-08-27

Abstract

The application provides a pair of audio and video meeting recorded broadcast system can realize the panorama shooting to the meeting place automatically via first video acquisition terminal to the recorded broadcast host computer can generate the visual angle instruction according to the audio information that audio acquisition terminal gathered, and second video acquisition terminal can realize the feature shooting to the meeting place automatically according to the visual angle instruction. Therefore, the labor cost of recording the audio and video in the meeting place is reduced, the comprehensive acquisition of the meeting place information is realized based on the panoramic information acquired by the first video acquisition terminal and the close-up information acquired by the second video acquisition terminal, and the recording effect is improved. Furthermore, in the audio and video conference recording and broadcasting system provided by the embodiment of the application, the interactive terminal devices arranged in different meeting places can realize communication and interaction on the basis of service support provided by the interactive platform server, so that convenience is provided for communication of people in different meeting places.

Description

Audio and video conference recording and broadcasting system

Technical Field

The utility model relates to the field of communication technology, more specifically say, relate to an audio and video meeting recorded broadcast system.

Background

The meeting is a common social phenomenon, which refers to an organized, leadership and purposeful meeting activity, and is carried out according to a certain program at a limited time and place. The main benefit agents of a conference mainly comprise sponsors, contractors and participants, and sometimes also comprise lecturers, and the main content of the main benefit agents is thought or information exchange among the participants.

In the process of a conference, audio and video in the conference are usually required to be recorded, and in the conventional technology, a special recording person is used for recording the audio and video manually in the process of the conference, so that the recording cost is high, and interference is easily received due to subjective consciousness of the person, so that the situation that pictures are not easy to capture in time often exists, and the recording effect is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an audio frequency and video meeting recorded broadcast system to the realization is recorded audio and video's automation in the meeting, reduces the cost of labor, improves and records the effect. The technical scheme is as follows:

an audio and video conference recording and broadcasting system comprises: the conference interaction system comprises a conference interaction platform server embedded with a conference interaction platform, and a recording and broadcasting host, at least one video acquisition terminal, at least one audio acquisition terminal and interaction terminal equipment with a built-in interaction system, which are arranged in a conference place; the at least one video acquisition terminal comprises a first video acquisition terminal used for panoramic shooting of the meeting place and a second video acquisition terminal used for close-up shooting of the meeting place; wherein the content of the first and second substances,

the at least one audio acquisition terminal is used for acquiring audio information of the meeting place;

the recording and broadcasting host is used for sending a visual angle instruction to the second video acquisition terminal according to the audio information sent by the at least one audio acquisition terminal, and a target visual angle indicated by the visual angle instruction is related to the position of a speaker in the current meeting place;

and the second video acquisition terminal is used for receiving the visual angle instruction and adjusting the current visual angle to be the target visual angle indicated by the visual angle instruction.

Preferably, the recording and playing host is further configured to:

receiving audio information transmitted by the audio acquisition terminal and video information acquired by the video acquisition terminal;

and generating a recording file according to the audio information and the video information in a broadcasting guide mode.

Preferably, the system further comprises a large screen splicing control system arranged in the meeting place, wherein the large screen splicing control system is used for splicing and displaying images of multiple paths of signals simultaneously input by the recording and broadcasting host/displaying images of one path of signals input by the recording and broadcasting host on a single screen.

Preferably, the system further comprises a resource management platform, wherein the resource management platform is used for receiving the video resources uploaded by the recording and broadcasting host, managing user rights, cross-platform and cross-terminal sharing, performing visual management on all meeting rooms of the meeting place, performing remote batch startup and shutdown and multi-view switching, and performing three-split screen playing on-line question answering and on-line live broadcasting publishing;

the video resource comprises any one or more of the audio information, the video information and the recording file; the three-split screen is related to a host video, a split meeting place video and a conference document video.

Preferably, the audio capture terminal includes:

a microphone for the speaker to speak;

the sound pick-up is used for picking up sound and transmitting the picked audio information to the recording and playing host;

and the sound amplifying system is connected with the sound pickup.

Preferably, the sound amplifying system comprises a power amplifier device connected with the sound pickup.

Preferably, the system further comprises a central control system arranged in the conference place, and the central control system is used for performing protection control on a delay switch on power supply of the audio and video conference recording and broadcasting system.

Preferably, the audio capture terminal includes:

a microphone for the speaker to speak;

and the digital audio matrix is respectively connected with the microphone, the sound amplifying system and the recording and broadcasting host.

Preferably, the sound reinforcement system comprises a sound system, and the sound box at the tail end of the sound system and the sound source of the conference place are located in the same sound field area.

Preferably, the system further comprises a video matrix, the video acquisition terminal is connected with the recording and playing host through the video matrix, and the large screen splicing control system is connected with the recording and playing host through the video matrix.

The audio and video conference recording and broadcasting system provided by the embodiment of the application can automatically realize panoramic shooting of a meeting place through the first video acquisition terminal, the recording and broadcasting host can generate a visual angle instruction according to audio information acquired by the audio acquisition terminal, and the second video acquisition terminal can automatically realize close-up shooting of the meeting place according to the visual angle instruction. Therefore, the labor cost of recording the audio and video in the meeting place is reduced, the comprehensive acquisition of the meeting place information is realized based on the panoramic information acquired by the first video acquisition terminal and the close-up information acquired by the second video acquisition terminal, and the recording effect is improved. Furthermore, in the audio and video conference recording and broadcasting system provided by the embodiment of the application, the interactive terminal devices arranged in different meeting places can realize communication and interaction on the basis of service support provided by the interactive platform server, so that convenience is provided for communication of people in different meeting places.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an audio and video conference recording and broadcasting system provided by an embodiment of the present invention;

fig. 2 is a schematic view of a recording and broadcasting system for small and medium-sized conferences according to an embodiment of the present application;

fig. 3 is a schematic diagram of a large conference recording and broadcasting system according to an embodiment of the present application.

Fig. 4 is a schematic diagram of an audio and video conference recording and playing system provided in an embodiment of the present application;

fig. 5 is a schematic diagram of another audio/video conference recording and playing system provided in an embodiment of the present application.

Detailed Description

Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure.

The term "include" and its variants as used herein are open-ended, i.e., "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.

Fig. 1 is a schematic structural diagram of an audio and video conference recording and playing system provided in an embodiment of the present application.

As shown in fig. 1, the audio/video conference recording and broadcasting system includes: the conference interaction system comprises a conference interaction platform server embedded with a conference interaction platform, and a recording and broadcasting host, at least one video acquisition terminal, at least one audio acquisition terminal and interaction terminal equipment with a built-in interaction system, which are arranged in a conference place; the at least one video acquisition terminal comprises a first video acquisition terminal used for panoramic shooting of the meeting place and a second video acquisition terminal used for close-up shooting of the meeting place.

The audio and video conference recording and broadcasting system provided by the embodiment of the application can be applied to at least one conference place, and the at least one conference place can comprise a main conference place and one or more branch conference places. Aiming at each meeting place of at least one meeting place, a recording and broadcasting host, at least one video acquisition terminal, at least one audio acquisition terminal and interactive terminal equipment with a built-in interactive system are arranged in the meeting place. Fig. 1 is a schematic diagram of an audio/video conference recording and playing system, and the inventor may set the number of meeting places in the audio/video conference recording and playing system according to his or her needs, which is not limited in the present application.

The conference interaction platform server provides technical support for information interaction between the interaction terminal devices. The interactive terminal equipment can carry out information interaction, and provides a communication platform for personnel in different meeting places.

The following describes in detail the functions of the recording and broadcasting host, the at least one video acquisition terminal, and the at least one audio acquisition terminal, which are installed in a conference site, by taking the conference site as an example, specifically as follows:

and the at least one audio acquisition terminal is used for acquiring audio information of the conference place. Specifically, each audio acquisition terminal in the at least one audio acquisition terminal is used for acquiring audio information of a meeting place and transmitting the acquired audio information to the recording and broadcasting host.

And the at least one video acquisition terminal is used for acquiring video information of the meeting place. Specifically, each video acquisition terminal in the at least one video acquisition terminal is used for acquiring video information of a meeting place and transmitting the acquired video information to the recording and broadcasting host.

In the embodiment of the application, at least one video acquisition terminal comprises a first video acquisition terminal used for panoramic shooting of the meeting place and a second video acquisition terminal used for close-up shooting of the meeting place.

And the recording and broadcasting host is used for sending a visual angle instruction to the second video acquisition terminal according to the audio information sent by the at least one audio acquisition terminal, and the target visual angle indicated by the visual angle instruction is related to the position of the speaker in the current meeting place.

Correspondingly, the second video acquisition terminal is used for receiving the visual angle instruction sent by the recording and broadcasting host computer and adjusting the current visual angle to be the target visual angle indicated by the visual angle instruction, so that the video information of the meeting place under the target visual angle can be conveniently acquired, and the close-up shooting of the meeting place can be realized.

In the embodiment of the application, the recording and broadcasting host receives audio information sent by at least one audio acquisition terminal, the position of a current speaker in a meeting place can be determined according to the audio information sent by each audio acquisition terminal in the at least one audio acquisition terminal, a target visual angle required by a second video acquisition terminal for shooting close-up of the current speaker in the meeting place is determined according to the position of the second video acquisition terminal and the deviation of the position of the current speaker in the meeting place, a visual angle instruction indicating the target visual angle is generated, and the visual angle instruction is transmitted to the second video acquisition terminal.

It should be noted that, because at least one audio capture terminal is dispersedly disposed in the meeting place, the audio information collected by the audio capture terminal includes volume information, and the position of the current speaker in the meeting place can be determined by combining the position of each audio capture terminal in the at least one audio capture terminal in the meeting place and the volume of the audio information collected by the audio capture terminal.

And the target visual angle of the second video acquisition terminal can be determined according to the position of the second video acquisition terminal and the deviation of the position of the current speaker in the meeting place, and the second video acquisition terminal is adjusted to the target visual angle to shoot the close-up of the current speaker in the meeting place.

It should be noted that one or more second video capture terminals may be set in the meeting place, and if a plurality of second video capture terminals are set in the meeting place, the recording and playing host may generate a view angle instruction corresponding to each second video capture terminal, respectively. Correspondingly, the recording and broadcasting host sends a visual angle instruction corresponding to each second video acquisition terminal to the second video acquisition terminal respectively. The manner of generating the view angle instruction corresponding to the second video capture terminal is described above, and is not described in detail here.

The positions of different second video acquisition terminals in the conference site may be different, and therefore, the target viewing angles indicated by the viewing angle instructions generated by the recording and broadcasting host for different second video acquisition terminals may be different.

And the recording and broadcasting host generates a visual angle instruction corresponding to each second video acquisition terminal for each second video acquisition terminal, sends the visual angle instruction to the second video acquisition terminal, and after receiving the visual angle instruction, the second video acquisition terminal can adjust the visual angle of the second video acquisition terminal to a target visual angle indicated by the visual angle instruction so as to realize the acquisition of the close-up of the current speaker in the meeting place. Through voice recognition of speakers at different positions in the scene, a close-up picture of the speakers can be automatically tracked and shot.

Further, the recording and broadcasting host is also used for receiving audio information transmitted by the audio acquisition terminal and video information acquired by the video acquisition terminal; and generating a recording file according to the audio information and the video information in the broadcasting guide mode.

The recording and broadcasting host is also used for storing the received audio information, video information and the generated recording file.

Furthermore, a large-screen splicing control system can be arranged in the meeting place and is used for splicing and displaying images of multiple paths of signals simultaneously input by the recording and broadcasting host computer/images of one path of signals input by the recording and broadcasting host computer through the single-screen display.

The audio and video conference recording and broadcasting system can also be provided with a large-screen splicing control system, can directly input RGB signals, video (BNC) signals, YPbPr signals, S-video signals, DVI signals and HDMI signals, can also carry out splicing display of various signal sources through the large-screen splicing control system, and can realize simultaneous input of multiple signals and display of any single screen of one signal on a large screen by randomly selecting one signal if signal switching is carried out by matching with a matrix. The unique image splicing processing technology realized by the large screen splicing control system is combined with the large screens with M rows and N columns, so that image damage and distortion can not be caused.

Furthermore, a resource management platform can be further arranged in the meeting place, and the resource management platform is used for receiving video resources uploaded by the recording and broadcasting host, managing user permissions, performing cross-platform and cross-terminal sharing, performing visual management on all meeting rooms of the meeting place, performing remote batch startup and shutdown and multi-view switching, and performing on-line question answering and on-line live broadcasting and publishing through three-screen playing. The video resources can comprise any one or more of audio information, video information and recording files; the triple split screen can be respectively related to a host video, a split meeting place video and a conference document video.

The audio and video conference recording and playing system can further comprise a resource management platform, and specifically, the resource management platform can be arranged in a meeting place of the audio and video conference recording and playing system. The recording and broadcasting host in the meeting place can automatically upload video resources to a meeting resource management platform in the meeting place, and the meeting resource management platform can realize user permission, cross-platform and cross-terminal sharing; and continuously carrying out visual management on all meeting rooms, carrying out remote batch startup and shutdown and multi-view switching, carrying out three-split screen playing (host video, meeting place video and meeting document video), answering on line and carrying out on-line live broadcasting and publishing.

The recording and broadcasting host in the audio and video conference recording and broadcasting system provided by the embodiment of the application can be 1 4K high-definition recording and broadcasting host, and a hardware high-gain audio processor is arranged in the recording and broadcasting host (2 paths of power supply microphones are connected, 3 paths of stereo sound lines are connected, and 4 paths of output are carried out); a video encoder and a streaming media encoder (the encoder resolution is 1920 × 1080P30f at the maximum, and the encoder is recorded as a mp4\ flv video file, and the streaming media is h.264highprofile encoding.

By combining the audio acquisition terminal, the video acquisition terminal, the large screen splicing control system and the resource management platform, the recording and broadcasting host can automatically generate a recording file at the same time of the conference, and the recorded video file is uploaded to the resource management platform; meanwhile, the recording and broadcasting host is provided with an internal broadcasting guide mode which comprises scene switching of a speaker/a listener picture, a speaker computer signal and the like, addition of LOGO and subtitles, switching of special effects, volume adjustment, tripod head camera focusing adjustment and multi-picture display layout.

In the embodiment of the application, when the staff trains the conference, the image, the sound and the computer screen image of the speaker can be seen through the live broadcast function, and the intercommunication and the communication with the character aspect of the speaker can be realized through the computer. After the conference is finished, timely playback after the conference training can be realized through the on-demand function of the conference recording and broadcasting system, and remote staff can also adopt IP network playback.

In the embodiment of the application, the equipment which is arranged in the meeting place and used for recording the audio and video of the meeting place forms a meeting recording and broadcasting system. Still taking a meeting place as an example, if the meeting place is a medium-sized or small-sized meeting place, the conference recording and broadcasting system arranged in the medium-sized or small-sized meeting place is a medium-sized or small-sized conference recording and broadcasting system. Fig. 2 is a schematic structural diagram of a recording and broadcasting system for small and medium-sized conferences according to an embodiment of the present application.

As shown in fig. 2, the audio acquisition terminal in the recording and broadcasting system for small and medium-sized conferences may be composed of a microphone, a sound pickup and a sound amplification system which are connected in sequence, and the audio acquisition terminal is connected with the recording and broadcasting host through the sound pickup.

In the embodiment of the application, a speaker speaks through the microphone when speaking, and the sound pickup is used for picking up sound and transmitting the picked-up audio information to the recording and broadcasting host.

And the sound amplifying system in the medium and small-sized conference recording and broadcasting system comprises power amplifier equipment connected with a sound pick-up. In this embodiment, the power amplifier device may be a sound box.

The small and medium-sized conference recording and broadcasting system can adopt 18 sets of handhold conference microphones for participants to speak, and 1 set of omnidirectional microphone pickups for meeting rooms to pick up sound; the speaker can speak through the hand-in-hand conference microphone, sound pickup can be directly performed through the omnidirectional microphone without any operation, the far end can receive the sound, and the received sound is output to the recording and broadcasting host to record, live broadcast and store audio. And through voice recognition of speakers at different positions in the scene, a close-up picture of the speakers is automatically tracked and shot.

Still taking a meeting place as an example, if the meeting place is a large meeting place, the conference recording and broadcasting system arranged in the large meeting place is a large conference recording and broadcasting system. Fig. 3 is a schematic structural diagram of a large conference recording and broadcasting system according to an embodiment of the present application.

As shown in fig. 3, the audio acquisition terminal in the large conference recording and broadcasting system may be composed of a microphone, a digital audio matrix, and an audio amplification system, which are connected in sequence, wherein both the microphone and the audio amplification system are connected to the recording and broadcasting host through the data audio matrix.

In the embodiment of the application, the microphone is used for a speaker to speak; that is, the speaker speaks through the microphone.

And the sound amplifying system in the large-scale conference recording and broadcasting system comprises a sound system, and a sound box at the tail end of the sound system is positioned in a sound field area together with a conference field sound source.

The sound amplification system in the large conference recording and broadcasting system comprises: through the analysis of the layout environment of the conference room, the sound equipment is reasonably arranged and connected, and the sound equipment is installed, so that the sound source and the tail end of the sound system, namely a sound box, are positioned in the same sound field area, audiences can feel the existence of the sound source, and the requirement of sound amplification of high-fidelity replay is met. The whole sound system meets the requirements of meeting the design of acoustic indexes: uniform and reasonable sound pressure level, definition, stable system operation, good transmission frequency characteristic and low distortion.

Digital audio matrix (large conference recording and broadcasting system): the howling of the field sound reinforcement system is effectively eliminated in a self-adaptive processing mode; raising and compressing the volume of the microphone to make the microphone output at a constant level; automatic noise cancellation according to the sound field changes of the environment.

Further, as shown in fig. 3, a central control system may be further disposed in the large-scale conference recording and broadcasting system, and the central control system is configured to perform protection control of the delay switch on the power supply of the large-scale conference recording and broadcasting system.

In the embodiment of the application, the central control system in the large conference recording and broadcasting system can control the related controlled devices through the RS232 port of the host, so as to implement on-off control, switching control and the like of the devices, and the important point is to perform protection control of the delay switch on the power supply of the power source, such as selection control of the signal source (for example, switching Video, Computer1 and Computer2 signals).

In the embodiment of the application, no matter a small and medium-sized conference recording and broadcasting system or a large conference recording and broadcasting system, at least one video acquisition terminal in the conference recording and broadcasting system can adopt 4 high-definition pan-tilt cameras (2 are used for close-up and panoramic shooting of the head of a chairman station, and 2 are used for close-up and panoramic shooting of auditoriums); the high-definition pan-tilt camera is controlled to rotate and perform close-up shooting through the recording and broadcasting host, and the preset positions of the high-definition pan-tilt camera can be automatically switched when any leader talks in a conference.

In addition, referring to fig. 3, in the case of the large-scale conference recording and playing system, the large-scale conference recording and playing system may further include a video matrix, the video acquisition terminal may be connected to the recording and playing host through the video matrix, and correspondingly, the large-screen splicing control system may be connected to the recording and playing host through the video matrix.

The conference recording and broadcasting system provided by the embodiment of the application has the following advantages: 1. and (3) recording conference signals comprehensively: after the real-time recording of the conference live (including images, sounds and data of the lecturer or the lecturer) is finished, the unit staff can request the current video at any time through the network and continue to learn; 2. the release of the recording file is simple: uploading the recorded file to a conference resource management platform, and playing back the recorded file again through an office network for on-demand watching; 3. live broadcast, on demand function: the image, the sound and the computer screen image of the speaker are watched through live broadcasting, and the image, the sound and the computer screen image can be intercommunicated with the speaker through a computer; training; 4. the problem of audio equipment is well solved by a digital audio matrix and a public address system. For example, in the existing conference recording and broadcasting system, especially in a large conference room, a sound system speaker presents noise or howling (noise simply occurs when a microphone battery is lack of power or a power amplifier volume is too large, or howling simply occurs when a microphone is too close to the speaker or is over against the speaker), and a phenomenon that the microphone is silent can also occur, mainly because the power consumption amount is large; the conference recording and broadcasting sound has no sound, and the projector is not bright; the recorded picture is not clear, and the picture is delayed.

The conference recording and broadcasting system provided by the embodiment of the application is based on an IP network, and can be used for synchronously recording, live broadcasting and on-demand broadcasting video and audio signals in a conference and dynamic screen signals of a computer in an integrated manner. The recorded conference materials can be automatically uploaded to a resource management platform for the users to order and broadcast at the later stage, and the online unified scheduling, online configuration and remote upgrading are supported.

The conference recording and broadcasting system is a digital conference system and integrates the technologies of computer, communication, recording and broadcasting, automatic control, multimedia, image, sound and the like. The system organically connects independent subsystems such as conference reporting, speaking, voting, camera shooting, sound, display, network live broadcast and the like into a whole, and a central control computer coordinates the operation of the subsystems according to a conference agenda; an intranet IP line is used as a basic operation platform, and accurate tracking can be performed by matching with a hand-in-hand conference system; the recording and broadcasting host can be replaced at any time along with the site, the use is convenient, and the large-capacity conference information can be transmitted to the background storage system through the recording and broadcasting host only by one network cable.

In order to solve the problem that frequent communication cannot be performed for emergency events, and personnel organization and coordination are not changed, more importantly, the efficiency of the assisting work is greatly reduced due to the inconvenience of communication; sometimes, the influence of regions is also received, and a large amount of travel expenses are paid, and the embodiment of the application further provides an audio and video conference recording and broadcasting system on the basis of the conference recording and broadcasting system.

The audio and video conference recording and broadcasting system provided by the embodiment of the application can realize the functions of holding and recording a remote video conference and a local video conference, and adopts a high-definition camera to shoot the conference. Through intelligent image recognition and tracking technology, one-button full-automatic tracking conference training recording is realized, an FTP uploading mechanism is supported, and recorded videos can be stored at any time.

The audio and video conference recording and broadcasting system runs a platform on the basis of an intranet IP circuit, and 1 video conference management center, 1 main meeting place and N branch meeting places are established by the audio and video conference recording and broadcasting system. The main meeting place can be a high-definition video conference main meeting place, and the branch meeting places can be high-definition video conference branch meeting places. 1 set of conference interaction platform and 1 set of conference resource management platform are configured in the main meeting place information center, and the conference resource management platform is used as a core multimedia processing platform of the whole video conference system and supports 1080P image coding capability. 1 interactive terminal device, 1 4K recording and broadcasting all-in-one machine and 1 high-definition camera are respectively arranged in a main meeting place and a branch meeting place, and 2 55-inch liquid crystal televisions are respectively arranged in the main meeting place and the branch meeting place, so that the branch meeting places can watch the actual conditions of other meeting places and PPT demonstration in the interactive process.

The audio and video conference recording and broadcasting system comprises conference recording and broadcasting systems respectively arranged in a main meeting place and a branch meeting place, and interactive terminal equipment with built-in interactive systems are further respectively arranged in the main meeting place and the branch meeting place. In addition, the audio and video conference recording and broadcasting system can also be provided with an information center in a main meeting place, and the information center can be provided with a conference interaction platform server embedded with a conference interaction platform.

As a preferred implementation manner provided by the embodiment of the present application, the audio and video conference recording and playing system may only configure one set of conference resource management platform in the information center, where the set of conference resource management platform is used for the recording and playing host of each meeting place in the audio and video conference recording and playing system to automatically upload video resources to the conference resource management platform, and the conference resource management platform may implement user rights, cross-platform sharing, and cross-terminal sharing for each meeting place in the audio and video conference recording and playing system; and continuously carrying out visual management on all meeting rooms, carrying out remote batch startup and shutdown and multi-view switching, carrying out three-split screen playing (host video, meeting place video and meeting document video), answering on line and carrying out on-line live broadcasting and publishing. Therefore, a conference resource management platform does not need to be independently arranged for each conference place, and resources are saved.

Fig. 4 is a schematic diagram of an audio and video conference recording and playing system provided in an embodiment of the present application. The encoding and decoding terminal shown in fig. 4 can be regarded as an interactive terminal device, and the information center can be regarded as a video conference management center. As can be seen from fig. 4, the structure of the audio/video conference recording and playing system provided in the embodiment of the present application is as follows:

a conference resource management platform: the system is placed in an information center, supports the user on-demand live broadcasting permission according to a conference room, supports the video file downloading and management according to the conference room, and carries out video retrieval according to a conference name, a conference subject and a host; supporting FTP backup uploading of a conference video file; the platform automatically releases and classifies the courseware without the need of a background to be operated, automatically corresponds the courseware to relevant courses, performs hierarchical management on the courses, watches meeting resources through IE, and downloads meeting relevant data and live meeting sites.

Recording and broadcasting host computer: the recording and broadcasting host can be a 4K recording and broadcasting all-in-one machine, the 4K recording and broadcasting all-in-one machine is placed in a main and branch place, and HDMI audio and video synchronous output and hardware digital broadcasting picture output, real-time subtitles, a film head, a film tail and station marks are mixed and compiled; switching video transition; and a built-in hardware high-gain audio processor, 2 paths of phantom power microphones are connected, 3 paths of stereo lines are connected, and 4 paths of outputs are output. And performing video coding and streaming media coding on the recorded video file; the push-pull pitching and the variable speed control of the camera are respectively controlled; and (5) performing subtitle prefabrication and switching superposition.

The interactive terminal equipment comprises: an interactive system is built in, video coding supports H.264, resolution ratio is automatically adjusted according to video quality and network conditions, video smoothness priority is guaranteed, and code rate control and quality feedback are improved; the mobile terminal supports hardware coding, more efficient and low-power-consumption coding and multi-party interaction, and the mobile phone terminal can support more than 6 simultaneous interactions; the audio adopts an opus encoder and is supported by full bandwidth, aec is specially optimized for the pc and the mobile terminal, the clear conversation can be realized in a noisy environment, and the anti-packet loss rate is more than 30%.

Conference interaction platform server: the embedded conference interactive platform supports high-definition standard-definition resolution, high-definition image quality, double-track, stereo CD-level tone quality and high-fidelity audio of CIF, 4CIF, 720P30fps, 720P60fps, 1080P30fps and 1080P60fps, and the functions are comprehensively integrated on one platform, so that the unified scheduling management of multimedia videos is realized; the system is based on the private protocol of udp, the servers are clustered in an ad hoc mode, and a large number of trunk line nodes form a high-speed network; the private cloud, the common cloud and the mixed cloud are flexibly deployed in a mode, all servers are clusters, dynamic expansion can be achieved, million concurrences are supported, and 50% of packet loss is achieved. The network layer has an efficient packet loss retransmission mechanism and an advanced nack algorithm, realizes fast reading selective packet supplement, and realizes that the video anti-packet loss rate is more than 30% and the audio is more than 30%.

A camera: the camera can be a high-definition conference special camera, the high-definition conference special camera adopts a high-quality Exmor CMOS sensor with 1/2.8 inch and 214 ten thousand pixels, can realize high-quality images with 1920x1080 maximum resolution, can output the frame frequency of 30fps at most, can be combined with any codec and other systems for use, and can output high-quality and high-resolution images.

Omnidirectional pickup: the device can freely speak at any angle and any distance in the range of 30-40 square meters, and the voice is clear and natural.

A liquid crystal television: and the branch meeting places watch the actual conditions of other meeting places and PPT demonstration in the interaction process.

Power amplifier and audio amplifier: and playing the sound.

Fig. 5 is a schematic diagram of another audio/video conference recording and playing system provided in an embodiment of the present application. The audio and video conference recording and broadcasting system shown in fig. 5 comprises:

High definition meeting special camera: the high-quality Exmor CMOS sensor with 1/2.8 inch and 214 ten thousand pixels can realize high-quality images with 1920x1080 maximum resolution, output the frame rate of 30fps maximum, and can be combined with any codec and other systems to output high-quality and high-resolution images.

Power amplifier and audio amplifier: and playing the sound.

The video conference system provided by the embodiment of the application can achieve the following effects:

1. remote video conference interaction: the face-to-face remote conference mode reduces unnecessary business travel, simultaneously realizes the remote video conference carrying interaction function, realizes interactive video in a plurality of places across conference rooms and across areas, and easily realizes the recording and sharing of contents.

2. The audio and video effect and the network stability are improved, the situations that echo, howling and the like influence the normal effect of the conference are reduced, and the conference interruption phenomenon caused by factors such as unstable bandwidth and network jitter is avoided.

3. Promote work efficiency, reduce the cost of labor: and uploading the training video through the whole recording and broadcasting process, and downloading and requesting the training video through the mobile terminal and the PC terminal.

4. Visual monitoring: the visual monitoring management of the branch mechanism can be realized, and the cross-region cooperation and management capability is improved.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

While several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the invention. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

The above description is only a preferred embodiment of the invention and is intended to illustrate the technical principles applied. It will be understood by those skilled in the art that the scope of the present disclosure is not limited to the specific combinations of the above-described features, but also encompasses other embodiments in which any combination of the above-described features or their equivalents is encompassed without departing from the spirit of the present disclosure. For example, the above features and (but not limited to) technical features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.

Claims

1. An audio and video conference recording and broadcasting system is characterized by comprising: the conference interaction system comprises a conference interaction platform server embedded with a conference interaction platform, and a recording and broadcasting host, at least one video acquisition terminal, at least one audio acquisition terminal and interaction terminal equipment with a built-in interaction system, which are arranged in a conference place; the at least one video acquisition terminal comprises a first video acquisition terminal used for panoramic shooting of the meeting place and a second video acquisition terminal used for close-up shooting of the meeting place; wherein the content of the first and second substances,

2. The audio-video conference recording and broadcasting system of claim 1, wherein the recording and broadcasting host is further configured to:

3. The audio and video conference recording and broadcasting system according to claim 2, further comprising a large screen splicing control system arranged in the conference place, wherein the large screen splicing control system is used for splicing and displaying images of multiple signals simultaneously input by the recording and broadcasting host or displaying an image of one signal input by the recording and broadcasting host on a single screen.

4. The audio and video conference recording and broadcasting system according to claim 3, wherein the recording and broadcasting host is a 4K high-definition recording and broadcasting host, and the 4K high-definition recording and broadcasting host comprises a high-gain audio processor, a video encoder and a streaming media encoder.

5. The audio-video conference recording and broadcasting system according to claim 4, wherein the audio acquisition terminal comprises:

a microphone for the speaker to speak;

and the sound amplifying system is connected with the sound pickup.

6. The audio-video conference recording and playing system according to claim 5, wherein said sound amplification system comprises a power amplifier device connected to said sound pickup.

7. The audio and video conference recording and broadcasting system according to claim 4, further comprising a central control system disposed in the conference place, wherein the central control system is configured to perform protection control of a delay switch on power supply of the audio and video conference recording and broadcasting system.

8. The audio-video conference recording and broadcasting system according to claim 7, wherein the audio collection terminal comprises:

a microphone for the speaker to speak;

9. The audio-video conference recording and broadcasting system as claimed in claim 8, wherein the sound amplifying system comprises a sound system, and the sound box at the tail end of the sound system and the sound source of the conference place are located in a sound field area.

10. The audio and video conference recording and playing system according to claim 9, further comprising a video matrix, wherein the video acquisition terminal is connected with the recording and playing host through the video matrix, and the large screen splicing control system is connected with the recording and playing host through the video matrix.