21ic traditional cameras use composite video interfaces to transmit standard-definition video signals. With the development of high-definition video market, various CCD and CMOS cameras have gradually entered the high-definition era, and interface standards for transmitting lossless signals have appeared in various forms. These include DVI-D and VGA interfaces from the graphics market, components from the consumer market and HDMI interfaces, SDI interfaces from the broadcast market, Camera-Link and GEVision interfaces from the industrial market, and emerging Displayport and HDBaseT interfaces. . Among them, the SDI interface adopts the same BNC connector and Coaxial Cable as the composite video and can transmit hundreds of meters to win the favor of many HD camera manufacturers, and many manufacturers have joined the HDCCTV alliance, hoping to drive SDI with the strong growth of the security market. The popularity of the interface in the HD market. Although the SDI interface and the composite video interface both use BNC connectors and coaxial cables, the difference is that composite video transmits analog signals on the coaxial, while SDI transmits digital signals on the coaxial, where SDI can transmit. SD video signals, HDSDI can transmit 720P or 1080I video signals, 3GSDI can transmit 1080P video signals, and SDI signals can embed stereo audio signals while transmitting video. To this end, Ovid has introduced a high-definition encoder AUR3G7200E that supports three-mode adaptive SDI, which can automatically detect the carrier frequencies of three SDIs and transmit the video to the network through the H.264 format.
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AUR3G7KE is the main product of Aowei AURORA's third-generation encoder product line. AUR3G7KE adopts intelligent interface technology. The device supports power-on automatic identification of input signal format. At the same time, the device can track and synchronize the input signal at the same time. That is, if the signal detected by the device is 1080P60 when the power is turned on, when the code transmission is performed, the signal source becomes 720P60, and the encoder can automatically detect the change of the signal source without any restart or manual intervention, and correspondingly The adjustment, the network transmission until the format and resolution of the decoding display will be changed synchronously, greatly improving user experience and system intelligence. AUR3G7KE supports five-mode network transmission protocol, providing customers with complete SDK and protocol documentation. It can support standard RTSP protocol, RTMP protocol, TS protocol, RTP protocol and private protocol. It is worth mentioning that in the case of proprietary protocol, When the encoder works in 1080P30/P60 mode, the end-to-end delay of the system is only 200-300ms, which can fully achieve the strong real-time effect.
The AUR3G7KE product line supports innovative windowing video processing technologies, including hardware scaling, deinterlacing (interleaving), frame rate conversion (upconversion and downconversion), resolution and frame rate conversion techniques that can handle 576i The /480i/1080i interlaced video to progressive function converts low-definition video images into high-definition progressive video images. The window-opening technology allows users to customize a variety of non-standard video image formats. AUR3G7KE adopts a variety of advanced image processing technologies, including multiple target area coding techniques (Multi-ROI-Coding), which can perform priority quality coding for multiple regions of interest set by users. Under the premise, the image quality of the ROI area is greatly improved; at the same time, the product also supports adaptive scene switching, and parameters are optimized for various typical user scenarios, so that AUR3G7KE is in movie mode, desktop mode, text mode, Typical application scenarios such as endoscope mode, recording mode, live mode, conference mode, and monitoring mode all show optimal performance.
AUR3G7KE supports full HD real-time dual stream output. It can support H.264-HP standard of 720x576p25 in secondary stream while the main stream supports 1920x1080p25 H.264-HP standard, and the primary and secondary streams can independently set the bit rate. And H.264 encoding grade (BP/MP/HP) and network transmission protocol, the typical application can use RTSP protocol or proprietary protocol in the local area network (special network) with 1080P full HD main stream to work at 4-8Mbps rate In the Internet (public network) using RTMP protocol with 720x576p25/320x240p30 sub-stream to work at 200-500kbps code rate, to meet the "local area to see clear, the Internet to see" market demand.
Based on Ovid's latest third-generation embedded processor system framework technology, the AURORA series of network encoder products are the only embedded coding devices on the market that support multi-mode protocols. The design concept is to provide three for integrator users. Uniformity of dimensions: The first is the unification of the high-definition video resolution dimension. For the difference between the SD video system and the HD video system and the private network and Internet bandwidth resources, Aowei video 1080P HD products can be provided from 320. ×240 resolution to 1920×1080 resolution, from 10 frames per second to 60 frames per second. The code rate supports from 100kbps up to 15Mbps. The video uses the most advanced and efficient H.264 High Profile compression algorithm. The audio adopts two-channel stereo AAC or MP3 compression algorithm, which can greatly save bandwidth and improve the subjective quality of audio and video. The second is the unified digital-analog interface. At present, the amount of analog source equipment in the market is still huge. High-definition video uses digital interfaces, and interlaced video and progressive video still coexist, which will inevitably lead to integrators and most End users need to purchase a variety of coding equipment for different sources to access the network, and Aowei's AUR3G7KE series products provide the perfect answer to the coexistence of this multi-standard digital-to-analog interface. Allows the user system to support analog composite video (CVBS and SVideo), analog component video (YPbPr or Component), VGA analog graphics interface (RGBHV), DVI-D digital graphics interface, HDMI multimedia high-definition digital interface and zero change Access to multiple sources, including SDI/HDSDI/3GSDI high-definition serial digital interfaces, greatly protects customer investment and helps integrators address end-user and system requirements with the fastest speed and zero replacement cost The third is the unification of multi-mode access protocols. Aowei video devices can support five access protocols simultaneously, including TS transport stream protocol, RTSP real-time streaming media transport protocol, Flash RTMP protocol, RTP real-time transport protocol and AVST. Private agreement, where the proprietary protocol applies to vertical industry integrators' existing recording and broadcasting platform software, and AVST provides a complete PC-side SDK for proprietary protocols. Outsourcing and technical support services, SDK development kit supports high-efficiency 1080P60 decoding and display library, support for network preview, storage, playback, forwarding and other core media layer functions; TS transport stream protocol is mostly used in broadcast system platform, based on STB system Information publishing platform and various live broadcast systems; RTSP real-time streaming media transfer protocol is mostly used for the private network system of Darwin streaming media server developed by Apple or various terminal devices of Apple such as iPhone, iPad and MAC computer; RTMP real-time information The protocol is the core part. Aowei Video has successfully developed the Flash Media Server software protocol stack on the embedded system, which allows users to directly view the device's Flash video without plug-in status using the Flash-enabled browser. And the encoding device also supports direct push of Flash audio and video streams to the Flash streaming server, including Adobe's FMS server, open source version of Red5 server and commercial WOWZA server.
Avitech's third-generation embedded processor system framework software development kit (AVSolution Technology Co., Ltd. Embedded-Processor-System-Framework III, hereinafter referred to as SDK3.0) is a set of high-performance multimedia middleware based on IP network. Software, based on Ovi's third-generation embedded processor system framework technology, SDK3.0 can support all of Ovid Video's EPSF-III series of embedded products, including the AURORA series of embedded HD encoders, MAYA series network HD cameras, CERES series of HD decoders and servers, the goal is to build a full-HD audio and video system based on IP across LAN and Internet.
AVST's embedded devices include two product lines, AURORA HD encoder and MAYA HD network camera, including multi-stream multi-protocol applications, SDK 3.0 for the standard development of the interconnection protocol MPEG-TS protocol, RTSP protocol, RTMP protocol The device control interface calling routine is used for system integration using an existing system or an open source/commercial streaming media server, such as using MPEG-TS protocol and multicast function to realize television signal monitoring of radio and television systems, and realizing remote multimedia information distribution. Such as the use of RTSP protocol and Darwin server to achieve digital court and remote interrogation system integration, such as using RTMP protocol and FMS4.5 or Red5 server to achieve Internet live broadcast and mobile Internet live broadcast system integration; for Ovid video's proprietary high-performance interconnect protocol provides complete The multimedia middleware software can quickly develop or deploy recording, live broadcast, on-demand server, forwarding server, client and digital matrix to support multi-screen HD TV wall display.
Mr. Zheng Xiaolong, Marketing Development Manager of Texas Instruments, said: "Texas Instruments (TI) is committed to providing customers with superior solutions to help them cope with various design challenges. We are very happy to see Ovi Video adopt TI's DaVinci technology introduces a series of IP-based 1080P HD video products and system-level solutions, which can help integrators and engineers quickly complete system integration and system deployment. In the future, TI and Ovid will continue to deepen. The cooperation, I believe that TI's powerful video processor platform can bring greater success to Ovid Video and more innovative breakthroughs in the digital video processing industry."
Mr. Wang Fuyu, general manager of Ovi Video, said: “Information technology can reduce the cost of communication between people and reduce the cost of acquiring unknown information. As long as it is a technology that can reduce the cost of communication or the cost of acquiring unknown information, it can always be successfully transformed. For the product, to form a new market, to promote the development of productivity and the progress of human civilization. The transformation of the industrial chain is inevitable, both in the consumer market and the industry market, and the emerging Internet video technology is rapidly integrating with the traditional industry market. Aowei Video focuses on the R&D and accumulation of core technologies for high-performance video products. It can provide high-quality network video products and system products for integrators and engineering customers in many vertical industries. We are willing to work closely with our customers to open them together. A new chapter in the digital video market."
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