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高清监控能否快速的应用和普及,不仅需要前端高清设备生产厂家提供系列化的成熟的高清产品,为用户构建高清监控系统灵活多样的产品选择,采集高清画面之后第一个需要考虑的就是视频信号传输问题,高清视频对传输提出了更高的要求。高清监控视频上传需要2MB带宽,而今天WCDMA和CDMA2000的上传带宽只有600KB到800KB,TD-SCDMA带宽要更窄一些,而这样的带宽条件只能传输分辨率较低的4路CIF或一路D1,还传输不了高清视频。以目前基础的百万像素高清720P规格计算,码流约是D1的2倍,带宽达到4M左右,而采取1080P计算,码流更是D1的5倍,所用带宽约为10M。因而,要看得更清晰,带宽是高清视频传输中最主要的问题。
High-definition monitoring can be rapid application and popularity, not only the front-end HD equipment manufacturers to provide a series of mature high-definition products for users to build high-definition surveillance system Flexible and diverse product selection, acquisition of high-definition picture after the first need to consider is the video Signal transmission problems, high-definition video transmission put forward higher requirements. HD surveillance video upload requires 2MB bandwidth, and today WCDMA and CDMA2000 upload bandwidth is only 600KB to 800KB, TD-SCDMA bandwidth to be narrower, and such bandwidth conditions can only transmit a lower resolution 4 CIF or D1, Also can not transmit HD video. With the current base of megapixel HD 720P specifications, the code stream is about twice the D1, the bandwidth reaches about 4M, and to take 1080P calculation, the code stream is 5 times D1, the bandwidth used is about 10M. Therefore, to see clearer, bandwidth is the most important issue in HD video transmission.