安全监控市场经历过多个不同的DVR发展阶段。嵌入式、混合式以及基于PC的DVR，这些系统都需要基本的视频和音频采集单元：模/数转换、压缩、回放和网络流处理。
嵌入式DVR是一种独立设备，可接受模拟CCTV摄像机输入，压缩并存储在本地HDD;混合式DVR能够接受模拟CCTV和IP摄像机输入，将其作为视频源;基于PC的DVR则随硬件压缩卡或PC运行的软件压缩程序集成在安全监测站。
不同模块的关键特性包括：视频输入通道数、所支持的压缩标准、录像质量、流处理和播放模式、存储容量以及系统能够同时执行的功能数量。
随着录像设备从模拟走向数字化过程中，监控领域最大产业DVR成为国内厂商做大做强的源头，一代优秀企业基于DVR累积实力迅速成长起来，国内安防产业也盘根错节深深地扎根并成长起来。
然而，转变也是必然的，各种因素的冲击，格局趋于稳定的DVR市场出现新的面孔，平静的DVR市场又涟漪阵阵?DVR产业面临哪些新的变化?DVR将进入七国大战吗?后DVR时代真的到来吗?!
The security monitoring market has experienced many different DVR development stages. Embedded, hybrid, and pc-based DVRS all require basic video and audio acquisition units: mode/number conversion, compression, playback, and network flow processing.
Embedded DVR is a kind of independent device, which can accept input from analog CCTV camera, compress and store in local HDD. Hybrid DVR can accept input from analog CCTV and IP cameras as video source. A pc-based DVR is integrated with a software compressor running on a hardware compression card or PC at a security monitoring station.
Different modules of the key features include: video input channel number, supported by the video compression standard, quality, flow processing and playback modes, storage capacity, as well as the system can perform the function of the number at the same time.
As from analog to digital video recording equipment in the process, monitoring area biggest industry DVR becomes the origin of the domestic manufacturers to do bigger and stronger, a generation of outstanding enterprises based on DVR accumulated strength grew up quickly, the domestic security industry also intertwined deeply take root and grow up.
However, the change is also inevitable. The impact of various factors brings new faces to the stable DVR market. What are the new changes facing the DVR industry? Will DVR enter the g7 war? Is the post-dvr era really here? !
