Local conference recording system configuration scheme

At present, all party and government organs and enterprises have basically conference rooms. The complete recording of the audio and video of the conference as a video material is already a regular demand of all units. This type of conference video is called a local conference video. How to design and install the local conference recording system is the first consideration for each video requirement unit. The scientific design package is the primary element in the configuration of the conference video system. This article briefly describes this.

To fully perform local conference recording, three device systems must be configured, including audio and video acquisition systems, video recording systems, and display systems.

First, audio and video collection system

1, audio collection

The simplest audio acquisition device is the pickup. This product is small in size, low in price and simple to use. It is a common audio collection device for many monitoring departments and small conference rooms. However, the disadvantage of the pickup is that the sound effect is poor, the shielding performance is not good, and noise is generated in a conference room where an audio is required, and it is generally not recommended. The lotus output interface of the pickup can be connected to the recorder to perform audio and video recording together with the input camera.

More formal conference rooms need to be equipped with microphone microphones and mixers. Medium and large conference rooms also need to be equipped with amplifiers and audio equipment. The lotus audio output interface of the mixer is connected to the recorder and audio and video recording is performed together with the input camera.

If it is a small classroom, a small conference room, and the lecture-based training is mainly based on recording the audio of the speaker, you can configure the FJ-02 wireless audio transceiver system of Chunyuan Liying. A head-mounted or belt-type wireless microphone can be used. The device has a wireless transmitter function and an audio receiver that can be effectively received within 10 meters. The receiver has a lotus audio output interface that can be input to the recorder for audio recording.

2, video capture

Video capture is basically a pan/tilt + camera system. At present, the conference video is mostly based on 1080P HD video. Therefore, the camera used in the conference room must support high-definition video capture. The camera must have an HDMI output interface, and at least an SDI output interface. Conventional PTZ + camera, PTZ equipment is more expensive, and the control is more troublesome. Therefore, this paper suggests using a high-definition camera with PTZ function, such as Chunyuan Liying's CYC11 cloud desktop HD camera. Taiwan function, support 1080P60hz high-definition video capture, support 20 times long-distance zoom, can zoom 20 meters of visible objects to a meter of visual effects, and this camera is equipped with a multi-function remote control, can be rotated up and down and left and right It can be zoomed in and out, and can also be preset. It can locate up to 255 positions. The normal operation presets 10 positions, which can be positioned by one button. This camera is already the main selection product of the current conference recording.

The number of cameras installed depends on the size of the conference room. Generally, a small conference room can be used with one camera. Zoom in and out through the remote control to capture the picture you need to capture. For medium-sized conference rooms, at least two cameras need to be configured, one for the podium and one for the participants. For large conference rooms and large plazas, more than three HD cameras are available as needed.

In order to reduce the purchase cost, in addition to the need to zoom in and out and adjust the position of the top and bottom, use a cloud camera, where to shoot a local scene, you can install a static camera, but at least choose a high-definition camera with SDI output interface.

Second, high-definition video system

In order to maintain high-definition and high-definition video recording of audio and video, it is necessary to configure a conference-specific video recorder with excellent performance and full-featured functions. The recorder must have an HDMI input interface to support audio and video simultaneous recording. The recorder must have a mix and record function. The recorder must not only support HDMI with audio input recording, but also support additional analog audio input and HDMI audio and video signals. Video sync recording. At the same time, according to the size of the local conference room, according to the number of configured high-definition cameras, select the number of HDMI input interfaces that match the recorder. If it is a small conference room, only equipped with a high-definition camera with HDMI output interface, you can choose a relatively cheap video recorder, such as Chunyuan Liying's WHD-01 or HDT-2B or lower-priced HDT-8 simple recorder. . If you have more than 2 HD cameras with HDMI output, you can only choose WHD-02 or WHD-03, WHD-04 for Chunyuan Liying. If you need to configure more than 4 HD cameras for large conference rooms, To choose other models of WHD that support 4 channels of HDMI input, Chunyuan Liying has 1-16 HDMI or SDI input HD conference recorders, which can be flexibly selected according to needs.

Conventional HD recorders, each camera is recorded as a separate file after input, and several cameras are recorded as several files. When the recorder is connected to the TV for playback, multi-screen simultaneous playback can be displayed, but the video file is copied to When the mobile hard disk is played on the computer, only one file of the camera can be copied separately. On the computer, the picture taken by each camera can not be viewed at once, and only the live view of the conference room can be partially viewed. To this end, Chunyuan Liying has launched a panoramic HD recorder WHDPRO, which can record the images captured by the four cameras as a video file. When copying to the computer, you can view the scenes captured by each camera at the same time and play the venue. The overall audio and video live, more in line with the needs of the conference audio and video data storage, is a real live local conference video recorder.

WHD series video recorders not only support local video recording and local playback, but also have rich network functions, support remote computer, shouji live and remote computer control, and can also be directly recorded on a remote computer, which can effectively expand the range of participants.

The HD conference recording system adopts a digital video recording scheme, which is not a network video recording scheme. Therefore, the digital cable is used for inputting the camera to the video recorder. The quality of the selected cable must be guaranteed. The HDMI high-definition cable is more than 3 meters. High-quality products of famous brands; SDI cable and wire, must choose high-quality copper core with sufficient diameter.

Third, audio and video display system

The HD recorder itself does not have a display screen. To perform recording settings, you must connect an LCD TV or monitor. The HD recorder supports 1080P60 output, so the selected TV or monitor should match it. If the TV or monitor screen is too small, 1080P60 display is not supported, and the output resolution of the recorder needs to be adjusted to the parameters matching the display in advance.

This article briefly describes the local conference recording system configuration and architecture. Video conference recording is different from local conference recording. Xiaobian will also provide a brief description of the system configuration and architecture of video conference recording.

For detailed conference video system information, please visit the website of "Chunyuan Liying" to log in to the company network!