由于发展历史不长，对于何为“真正的高清”，虽然业内已基本在摄像机产品环节达成了共识，而对于其它相关产品如DVR，目前业内对“高清”的理解和判定还没有统一的标准。
高清DVR的标准
2010年被称为高清元年，从高清电视到手机接收高清信号……“高清”对于普通大众来说已经不是陌生的词汇。从视频监控行业来看，高清的发展也是如火如荼。从前端视频采集到后端显示，很多厂商都推出了各种高清解决方案。由于发展历史不长，对于何为“真正的高清”，虽然业内已基本在摄像机产品环节达成了共识，而对于其它相关产品如DVR，目前业内对“高清”的理解和判定还没有统一的标准。
现阶段，主流的高清DVR方案有IP和模拟两种，视频分辨率在720P以上的，大家都称为高清DVR。其中，IP的方案由前端编码，高清数据通过网络传输到后端设备(DVR)进行存储、预览和回放，该方案借助IP网络，拥有部署灵活、同时受网络环境影响较大的特点。模拟方案是将前端图像不经处理直接传到后端设备(DVR)，由后端进行编码、存储、预览、回放，该方案图像更清晰、无延时，但成本较高。
Due to the development history is not long, for what is a "real hd", while the industry has been basically reached a consensus on camera product link, and for other related products such as DVR, currently the industry's understanding of "hd" and the judge has no unified standard.
High definition DVR standard
2010 is called the first year of high definition, when high definition signals are received from HDTVS to mobile phones "Hd" is no stranger to the general public. From video monitoring industry, the development of hd is also in full swing. From front-end video acquisition to back-end display, many manufacturers have launched a variety of hd solutions. Due to the development history is not long, for what is a "real hd", while the industry has been basically reached a consensus on camera product link, and for other related products such as DVR, currently the industry's understanding of "hd" and the judge has no unified standard.
At present, the mainstream hd DVR schemes include IP and simulation. Video has a resolution above 720P, which is known as hd DVR. The IP solution by the front-end coding, hd data transmission through the network to the back-end (DVR) for storage equipment, preview and playback, the scheme using IP networks, has deployed the characteristics of flexible, greatly influenced by the network environment at the same time. The simulation scheme is to transmit the front-end image directly to the back-end device (DVR) without processing. The back-end images are encoded, stored, previewed and played back. The scheme has clearer images, no delay, but high cost.
但不管是哪一种“高清”方案，高清DVR都应该能提供更清楚的视频预览和回放功能，用户也需要结合具体的应用去选择。
高清DVR的特点
由于高清DVR无论是分辨率还是图像的流畅度，其要求都要比标清的高很多;另外，高清系统将意味着更大量的数据传输、存储和处理……高清DVR要适应这些要求，它必须具备以下特点：
使用统一的通讯标准
在高清的系统中，各厂商的不同设备要能在同一个系统下和谐共存，这就意味着高清DVR需要采用更统一的标准。目前PSIA和ONIVF等都推出了各自的通讯协议，虽然这两大标准体系还是有些区别，但是比起之前各家标准“漫天飞”的混乱局面还是有了很大的进步。
使用更先进的编***算法
编***算法与高清DVR的发展息息相关。无论是H.264还是MPEG-4，其处理后的高清视频数据量都会对网络和存储带来很大的压力。如果没有更高压缩率、更高效率、更小失真的算法出现，必然会影响高清DVR的快速发展。
更高要求的硬件
集成度更加高、处理能力更加强、模块更加小、功耗更低的硬件，是DVR走向高清的必备要素。除此之外，还要考虑目前国家节能环保的大趋势，采用低功耗、环保的材料。
But in either "hd" scenario, the hd DVR should provide a clearer video preview and playback capability, and users need to choose between specific applications.
Features of hd DVR
High definition DVR requires much higher resolution and image fluency than standard definition. In addition, hd systems will mean more data transfer, storage and processing To meet these requirements, a hd DVR must have the following features:
Use unified communication standards
In HDDS, different devices from different manufacturers can coexist harmoniously under the same system, which means that HDDVRS need to adopt more unified standards. Currently PSIA and ONIVF all launched their own communication protocol, although it is some difference between two standard system, but compared to before each standard "pushing" chaos or has made great progress.
Use more advanced programming algorithms
Programming *** algorithm is closely related to the development of hd DVR. Whether h.264 or mpeg-4, the amount of hd video data that is processed can put a lot of pressure on the network and storage. If there is no algorithm with higher compression rate, higher efficiency and less distortion, it will inevitably affect the rapid development of hd DVR.
More demanding hardware
Hardware with higher integration, stronger processing capacity, smaller modules and lower power consumption is essential for DVR to move towards hd. In addition, we should also consider the current national trend of energy conservation and environmental protection and adopt low-power and environment-friendly materials.
针对细分市场而定制
随着行业应用的兴起，高清DVR将不仅仅是视音频预览和回放的装置，它还需要与行业应用结合，以满足不同行业的业务管理需求。例如银行ATM专用DVR、超市收银POS专用DVR、环境参数监测DVR、道路卡口车牌抓拍DVR、司法审讯DVR、城管执法手持DVR、车载DVR等等。
高清DVR的挑战
从系统层面来看，一个完整的高清系统需要由采集、传输、处理、存储、显示等环节组成。DVR身处其中，它的高清化发展不仅需要自身的升级和变革，同样也需要其他环节的支持。在推动DVR向着高清发展的过程中，需要解决很多的问题。
挑战一：采集
高清视频采集是源头环节，此环节的重要性不用多言。目前，这一环节的发展基本步入快车道，大部分监控厂商都推出了各种类型的高清网络摄像机：分辨率上从VGA分辨率到500万，甚至更高像素;产品形态上有枪式、室内半球、迷你半球、卡片式直到室外半球等;行业应用上也有了进一步细分，例如金融专用、交通专用等……虽然产品丰富多样，但高清网络摄像机依然需要解决标准、易用性，以及智能化应用的问题。
挑战二：传输
在标清时代，通讯网络采用100M的网卡传输足矣，但是一旦上了高清后，1路高清视频最低也需要8M带宽，如果有16到32路、甚至64路的高清数据同时接入高清DVR，即使是1000M的网卡也不一定够用。因此，必须采用1到2个甚至更多的网卡绑定使用，以实现负载均衡。
Tailored to market segments
With the rise of industry applications, hd DVR will not only be a device for video and audio preview and playback, but also need to be combined with industry applications to meet the business management needs of different industries. For example, DVR for bank ATM, DVR for supermarket cashier POS, DVR for environment parameter monitoring, DVR for road card grip, DVR for judicial interrogation, handheld DVR for urban management and DVR for vehicle license plate enforcement, etc.
The challenge of hd DVR
From the system level, a complete hd system needs to be composed of acquisition, transmission, processing, storage, display and other links. DVR is one of them. Its high-clearing development requires not only its own upgrading and transformation, but also the support from other links. There are many problems to be solved in pushing DVR towards hd.
Challenge 1: collecting
Hd video acquisition is the source link, the importance of this link need not be said. At present, this link into the development of basic freeway, most of the monitor vendor introduced various types of hd webcam: from VGA resolution to 5 million resolution, even higher pixel; In product form, there are gun type, indoor hemisphere, mini hemisphere, card type and outdoor hemisphere, etc. There are also further subdivisions in the industry applications, such as financial, transportation and so on Although the products are abundant and diverse, the hd network camera still needs to solve the problems of standards, usability and intelligent application.
Challenge 2: transmission
In the era of the qing, communication network with 100 m network transmission is sufficient, but once on the hd, high-definition video 1 road minimum also need 8 m bandwidth, if there are 16 to 32, or even 64 hd data access hd DVR at the same time, even 1000 m network card is not enough. Therefore, one to two or more network card bindings must be used to achieve load balancing.
挑战三：存储
高清视频带来的大数据量，不仅给网络传输带来麻烦，同样对存储也是一个新的挑战。
高清相对于标清的数据量，一下子提了升4至5倍，原来足够标清系统使用的IO带宽以及存储容量，此时就显得力不从心。因此，高清DVR必须研究新的存储技术，提高IO带宽和存储容量。
挑战四：显示
高清视频最终是需要显示出来给客户看的。目前很多厂商宣称其DVR是高清的，但是却没有HDMI接口(高清晰度多媒体接口)，或者有也只是个摆设，这样的设备是实现不了“高清”的。所以高清DVR必须采用HDMI高品质的传输技术，实现高清的显示。
挑战五：兼容
DVR升级为高清之后，将会采用新的标准和新的方案，这样一来，如何与其他系统做到兼容?或者说会不会影响到系统里的其他产品?对此我们需要有清醒的认识，不能因为盲目追求高清，造成了高清DVR与其他普通设备不兼容，无法共用一个平台，造成原有投资的浪费。
挑战六：数据挖掘
高清只是手段，关键还是要应用。我们追求高清，真正的目的是为了获得更优质的图像和更多的细节，以提高智能视频处理和应用的水平，从而提升监控系统的效能。因此，众多厂家在发展高清的同时，还要注意到高清数据的挖掘和充分利用，这才是将来高清DVR未来的发展方向，这也需要有深厚技术积累和行业经验积累的厂商不断去探索。
Challenge 3: storage
The large amount of data from hd video is not only a problem for network transmission, but also a new challenge for storage.
High definition, compared to the amount of data in standard definition, is increased 4-5 times in a short time. It was originally enough to mark out the IO bandwidth and storage capacity of the system. Therefore, hd DVR must study new storage technology to improve IO bandwidth and storage capacity.
Challenge 4: display
Hd video ultimately needs to be shown to the customer. At present many vendors claim it is hd DVR, but there was no HDMI (high definition multimedia interface), or have just a decoration, also such equipment is not achieve the "hd". Therefore, HDDVR must adopt high quality transmission technology of HDMI to realize hd display.
Challenge 5: compatibility
When the DVR is upgraded to hd, new standards and new solutions will be adopted, so how can it be compatible with other systems? Or will it affect other products in the system? We need to have a clear understanding of this. The blind pursuit of hd cannot lead to the incompatibility of hd DVR with other common devices and the inability to share a platform, resulting in the waste of original investment.
Challenge 6: data mining
Hd is a device, but the key is to apply it. We pursue high definition, the real goal is to get better images and more details, so as to improve the level of intelligent video processing and application, so as to improve the effectiveness of the monitoring system. As a result, many manufacturers at the same time in the development of high-definition, also note to hd and make full use of data mining, which is the hd DVR's future development direction in the future, this also needs to have the deep technical accumulation and experience accumulation of manufacturers to explore unceasingly.