Chunyuan Liying WHD series HD recorders have been on the market for nearly ten years, and nearly 30 models have been launched, including video conference recorders, local conference recorders, and endoscopic laparoscopic medical surgery recording and broadcasting. Recording and broadcasting machines for teaching and training, court trial recording and broadcasting machines, large-scale plaza stage performance recording and broadcasting machines, high-definition surveillance recording and broadcasting machines for important occasions such as Shanlin Reservoir construction site bank taxation. In the digital HD special-shaped input interface HD recorder industry has become a unique brand. Buying HD VCRs and choosing Chunyuan Liying has become an industry consensus. 2. Model classification and use options Chunyuan Liying WHD recorders are classified according to different input ports and quantities; different types of models can be selected or customized for different fields of use. (1), 4-channel input interface model 1. According to the number of HDMI and SDI port layouts, there are 4 models: (WHD-01—WHD-04) WHD-01 has 1 HDMI and 3 SDI input interfaces; WHD-02 has 2 HDMI and 2 SDI input interfaces; and so on to WHD-04. WHD-01 and WHD-02 products are mainly used for video conferencing, medical endoscopic laparoscopic recording and other occasions that require 1-2 HDMI input recording or both HDMI and SDI input recording. WHD-03 and WHD-04, two products are mainly used in medium-sized meeting rooms or occasions where 3-4 HDMI high-definition audio and video needs to be recorded at the same time. 2. There are 4 models according to the number of VGA and SDI port layouts: (WHD-05—WHD-08) WHD-05 has 1 VGA and 3 SDI input interfaces; WHD-06 has 2 VGA and 2 SDI input interfaces; and so on to WHD-08. The four products are mainly used for recording devices with VGA output interface, such as recording desktop computers, etc., and are also suitable for users who need to record both VGA and SDI. 3. There are 6 models according to the number of HDMI, VGA, and SDI ports (WHD-09—WHD-14) WHD-09 has 1 HDMI, 1 VGA, and 2 SDI input interfaces; WHD-10 has 2 HDMI, 1 VGA, and 1 SDI input interfaces, and so on to WHD-12. WHD-13 has 2 HDMI and 2 VGA input interfaces; WHD-14 has 1 HDMI and 3 VGA input interfaces. These 6 products are suitable for users who need to record HDMI, VGA and SDI interface. 1. 8-channel input interface model: There are 8 HDMI input interface models, 8 VGA input interface models, 4 HDMI 4 3G-SDI input interface models, 4 VGA 4 3G-SDI input interface models, 8 3G-SDI input interfaces model. You can also choose the number of 1-4 3G-SDI arbitrarily, and the number of 8 channels after deducting the 3G-SDI interface can choose the number of HDMI or VGA interfaces. 2. 16-channel input interface models: There are 16 HDMI input interface models, 16 VGA input interface models, 8 HDMI 8 3G-SDI input interface models, 8 HDMI 8 VGA input interface models, and 16 3G-SDI input interface models . You can also choose the number of 1-8 3G-SDI channels arbitrarily, and the number of HDMI or VGA ports can be selected for the number of 16 channels after subtracting the 3G-SDI interface. For 8/16-channel input models, HDMI itself does not support audio input. Like other input interfaces, additional audio must be input from the delivered audio input interface component to achieve simultaneous audio and video recording. The output interface of the 8/16 input model is the same. There are HDMI, VGA, AV output interfaces, which can output display at the same time. (3), 7-channel input four-in-one recording panoramic HD recorder The output interface of the panoramic HD recorder has HDMI, VGA and BNC state AV output interface, which can output and display at the same time. The panoramic video recorder is mainly suitable for recording in the local meeting room. It can ideally record the high-definition audio and video files collected and played by at least 3 high-definition cameras and one computer into an independent file in the picture-in-picture mode, and also supports separate recording of 3 Audio and video signals collected by a high-definition camera. 7-channel input recording, meeting room recording of different scales, is the leading product among today's high-definition recorders! Three, function introduction (1) Recording and broadcasting function Chunyuan Liying WHD series video recorders are digital high-definition video recorders, which are completely different from the ordinary analog video recorders and network video recorders. The input supports 1080P60 high-resolution frames, and the image quality after recording reaches 1080P30/25hz. It is currently a product with outstanding recording resolution at home and abroad. 1. Recording and broadcasting function of 4-channel model and 7-channel input panoramic model WHD-01——WHD-14 fourteen products and panoramic HD recorder models, support 2 built-in 3TB 3.5-inch SATA hard disks, single-channel recording, occupy 1.8GB of hard disk space per hour, built-in 2 After a 3T hard disk, even if 4 channels are recorded at the same time, it can be recorded continuously for more than a month. The files recorded to the built-in hard disk are in standard high-definition H264 format, with automatic packetization function, even if the power is suddenly cut off, the files will not be lost. Two hard disks can be set to loop overwrite recording, and can also be set to automatically stop recording when the recording is full. You can also set up redundant recording, which can record the same content on two hard disks at the same time, which is more secure for the preservation of important conference materials . The machine supports time stamp display, which can be turned on and off at will. Supports live broadcast without delay, you can record and play while recording. The machine supports automatic recording at startup, scheduled recording at regular intervals, and manual recording at any time. The video recorded to the built-in hard disk can be copied to a mobile hard disk or U disk via USB, and AVI or H264 can be selected when copying. Regardless of whether it is a 4-channel input model or a panoramic camera’s 7-channel input, you can select all channels or choose any number of channels to record. 2. Recording and broadcasting function of 8\16 channel models The 8\16-channel model supports 8 built-in 3.5-inch SATA hard disks each with 4T. The video recorded to the built-in hard disk can be copied to the mobile hard disk or U disk via USB. When copying, you can choose AVI or H264. Regardless of whether it is an 8-channel input model or a 16-channel input model, you can select all channels or select any number of channels to record. The machine supports time stamp display, which can be turned on and off at will. Supports live broadcast without delay, you can record and play while recording. The WHD series recorders not only support this machine to connect to LCD TV or monitor to control playback and recording, but also have rich network functions. 1. Support local area network, Internet remote computer, mobile phone, tablet simultaneous live broadcast, voice intercom; 2. Support LAN computer synchronization download, video on demand, high-definition screenshots; 3. Support computer remote synchronous recording, system settings, and scheduled recording; 4. With a third-party live broadcast platform, remote simultaneous live broadcasts with unlimited number of people are possible. Chunyuan Liying WHD series recorders have many models, suitable for different fields to choose and use; good customization, customers can customize ports and models according to their needs; easy to operate, no complicated network settings, no need for computers, no need for complicated touch and other equipment Cooperate, without professional training, just connect a TV or a monitor, a mouse can control the recording and broadcasting, and ordinary personnel can quickly use it; it has good compatibility and supports various conference terminal equipment, various conference cameras, various matrixes, and A variety of audio and video control equipment, various endoscopic laparoscopes and other equipment input recording; comprehensive functions, remote live on-demand and remote control without a dedicated network; no need to configure the camera keyboard to directly control the conference HD camera; affordable, A few thousand yuan can meet the needs of all kinds of high-definition recording. Compared with the tens of thousands of yuan of recorders on the market, it has a very high cost performance! For more information on conference HD video recorders, please search "Chunyuan Liying" on the Internet and log on to the company website for more information! PP/PE/PVC wall corrugated pipe extrusion machine zhangjiagang sevenstars machinery co.,ltd , https://www.sevenstars-machineries.com
I. Overview 
The 4-channel input model supports simultaneous or optional 4-channel input for recording. According to the number of HDMI (DVI), VGA, and SDI input ports, specific models are named. There are 14 models in total. HDMI and DVI are input interfaces of the same nature, and DVI adapters can be distributed according to customer needs. 
For 4-channel input models, HDMI supports recording with audio input, and there are also 4 lotus audio input ports corresponding to the 4 video input ports. When HDMI contains audio, you can again mix and record from the corresponding Lotus audio input port. When HDMI does not contain audio, you can input audio recording from the Lotus audio port. The output interface is the same. AV output interface with HDMI, VGA and BNC status can output display at the same time. 
(Two), 8-channel, 16-channel input interface models 
The 8/16-channel input model is suitable for recording large-scale conferences, large-scale square stage dance halls, high-definition monitoring of mountain forest reservoir construction sites, and large-scale high-definition recording in airport halls. It is also suitable for remote HD monitoring and recording of multiple computers in the office. 
The main feature of Chunyuan Liying Panoramic HD Recorder is that on the basis of the 4-channel model, the first input channel is upgraded to be able to input 2 HDMI, 1 DVI, 1 VGA 4 channels of audio and video signals, HDMI support With audio input, each video input interface also matches a 3.5 line audio input interface. The 4 input signals can be input at the same time or optionally, and one of the signals can also be selected for recording. When multi-input recording is selected, multiple input signals are recorded as an audio and video file in picture-in-picture mode. Play a file to see the images captured by up to 4 high-definition cameras, which can show the overall live situation of the venue in a panoramic view, so it is called a panoramic recorder. 
For the second, third and fourth channels of the panoramic HD recorder, you can choose to record with SDI input. The model name of SDI is WHDpro-01; you can also choose to record with HDMI input. Choose the model name of HDMI It is WHDpro-02. The second, third, and fourth channels all match a lotus audio input interface with the video input. When inputting HDMI video signals, regardless of whether HDMI contains audio, you can also input audio mixing and recording from the Lotus audio port. 
The machine has a good sound mixing function, which not only supports simultaneous audio and video mixing and recording of remote and local audio in video conferences, but also supports high-definition recording and broadcasting in local meeting rooms. 
(Two), network function 
(3) PTZ function 
WHD series recorders support multiple network control protocols such as 485 and 232. After connecting a high-definition conference camera, the camera does not need to be connected to the control keyboard. The recorder can directly control the up, down, left, and right zoom and preset positioning of the PTZ camera. How many cameras can be controlled by the recorder at will, very simple and convenient!