The overall design topology diagram is shown below:

Interactive Education MCU

As the core of the entire system, the headquarters has installed an 8-point high-definition interactive education MCU in the core computer room, which can support 720P and 1080P interactive teaching, such as remote classrooms and dual teacher classrooms. A brand new interface, convenient operation, powerful performance, and safe and intelligent interactive experience provide teaching with a brand new and valuable interactive video enjoyment.

Features and advantages

Standard 1U hardware device, rack mounted, suitable for large-scale network integration services

A single device can support up to 8 1080P recorded classrooms for simultaneous interactive teaching.

Support stacking and expansion of multiple devices

Hardware integration, embedded operating system, secure and stable, effectively preventing hacker and virus attacks

High performance encoding card, supporting H.264 High Profile protocol, can save 50% bandwidth

Supports hybrid conferencing with high-definition, standard definition, multi rate, and multi protocol capabilities

Good compatibility, fully compatible with various H.323 and SIP protocols for terminals, MCUs, and gateways, providing good scalability for the system

Support web based control for remote management and maintenance

Accessing interactive recording hosts

High definition education recording host

The host is positioned as an education 4K picture quality, H.323/SIP/RTSP four way interactive, optional built-in audio processor, and 7-channel resource synchronous recording standard DSP pure embedded recording host. By using automatic or manual guidance, compress and record various video signals in movie mode and resource mode. And provide real-time storage, live streaming, and ring out functions for various compressed video streams, achieving integrated embedded real-time guidance and recording functions.

Main hardware features

The host is a professional device designed specifically for educational recording and broadcasting applications, integrating functions such as supporting 4K synthetic encoding, 4K synthetic HDMI output, RTSP/H.323/SIP multi-protocol four-way interaction, and optional built-in digital audio processor.

The built-in recording, live streaming, on-demand, guide management, storage, seamless switching and other functions of the host must be integrated into one host.

The host adopts an embedded DSP pure hardware architecture; Linux operating system; Capable of working 7 * 24 hours; The host adopts an aluminum chassis, and the equipment height is not higher than 1U;

Video input interface: 7 physical interfaces. 4 channels for high-definition camera 3G/HD-SDI input, 1 channel for HDMI input interface, 1 channel for VGA, and 1 channel for YPBPR/CVBS/S-VIDEO signal input;

Video output interface: Two high-definition output terminals can output two different images, with one HDMI output terminal and up to 4K output support; 1 channel VGA 1080P output;

Audio interface: Two microphones connected to the built-in phantom power supply; 3-way stereo line access; 3 line outputs and 1 3.5mm local headphone monitoring interface.

Control interface: 5 RS232/RS485 serial ports, 4 USB interfaces, of which 1 supports USB 3.0.

Network interface: 2 RJ45 LAN interfaces, 1 recording and broadcasting network, and 1 audio processor control network.

Encoding: 1-channel 4K encoding; Or 5-channel 1080p30fps audio and video encoding; Independent 4-channel audio acquisition.

Decoding: 3-way 1080p30fps audio and video decoding;

Encoding format: Video supports H.264SVC/HP/MP/BP optional; Audio encoding format AAC/G.711. Media file format MP4. Video encoding stream: 56Kbps~16Mbps adjustable, audio sampling rate 8-48Hz adjustable, audio encoding rate 8-320Kbps adjustable.

Screen synthesis: 1 channel of screen synthesis, providing multiple mode options such as 2/4/6/8/customization, with a synthesis resolution of 4K or 1080P settings.

Optional audio processor module: supports mixing grouping, automatic feedback suppression AFC, automatic echo cancellation AEC, and automatic noise cancellation ANC;

Remote interaction: supports multi protocol hybrid remote application modes such as RTSP/H.323/SIP, while RTSP/SIP supports four party interaction mode;

Streaming protocol: Supports TCP/UDP/RTSP/RTP/RTP/RTMP/RTMP/ONVIF/H.323/SIP/TS protocol

Storage: Comes with a standard 1T hard drive, supports up to 2 SATA interface hard drives, supports a single 3T hard drive, and can achieve real-time storage of 7 streams. It has functions such as viewing, downloading, and deleting individual video files in the device's webpage and output guidance interface.

Main features of built-in recording software

The embedded recording and playback management software must be installed in the host, based on the dual management interface architecture of B/S and local HDMI/VGA video output GUI, and compatible with browsers such as IE.

The system includes video monitoring, video switching, pan tilt control, audio adjustment, live streaming/recording, pause control, subtitles, logo, school emblem, live streaming monitoring, guidance, on-demand, system settings, and other functions

Video preview display: Real time preview display of no less than 7 high-definition videos, capable of SDI/HDMI/remote interactive mixed input simultaneously;

The recording method supports manual guidance switching control or seamless combination with automatic tracking system to achieve fully automatic recording;

Real time display of recording information, which must include recording duration, video resolution, host IP, and other information; And it is required to be able to display the hard disk capacity;

Implement real-time pre monitoring function for at least 7 channels; Pan tilt control interface: equipped with 6 preset numeric keys, adjustable interface for up, down, left, right, close and far adjustment;

The recording mode supports two modes: movie mode and movie plus resource mode. The movie mode and resource mode can work simultaneously. When recording a movie in resource mode, the resource mode works in the background.

The broadcasting mode supports manual and fully automatic mode switching at will;

The manual broadcast mode supports functions such as video preview, live output monitoring, video switching, audio adjustment, and recording mode switching; Supports manual PTZ control, and both teacher and student videos support multiple preset settings.

Unified resource mode interface and movie mode interface; Select the channel that requires recording resources in the menu, and open the movie+resource mode recording with just one click to simultaneously record PGM and resource recordings.

The software comes with no less than four MCUs and supports interactive teaching from all directions; Supports interactive call protocols such as SIP/H323/RTSP/RTMP, supports call end communication book management, or enables one click multi terminal calling or hanging up.

Support the company to independently develop interactive teaching platforms or third-party video conferencing multi-point control units (MCUs) to achieve large-scale interactive teaching applications.

It supports one click Internet live broadcast for ten thousand people. On the basis of no need to deploy other software and platforms, the recording and broadcasting host can realize the function of Internet live broadcast for ten thousand people;

The software comes with an on-demand function, which supports up to 5 people simultaneously playing video on the host.

Support functions such as course information, subtitles, opening and ending information, and manually publish subtitles to enhance the infectiousness of the courseware.

Support multiple switching effects, including mainstream switching effects such as erase, fade in, and fade out.

Support remote FTP upload/download of videos, with multiple upload modes such as recording end and timing.

Support multiple recording modes such as boot up recording, scheduled recording, manual recording, and school level platform system course schedule.

Support TS multicast streaming and enable more users to watch live broadcasts within the local area network.

Require audio and video synchronization of recorded files to meet the normal application of third-party editing software.

Configuration Checklist