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A more efficient compression algorithm in Ultra HD DVRs allows H.265 to do its job better than its predecessors. Technological differences between H.265 and H.264 are the increase in the size of the encoding block (H.264 from 4x4 to 16x16, and in H.265 from 8x8 to 64x64) and the parallel encoding of different parts of the frame, accelerating the encoding process. The performance of H.265 is approximately 2 times higher than that of H.264. As a result, H.265 allows you to receive a stream of 4K resolution of an acceptable volume, and with the same bitrate, video quality using H.265 is better compared to H.264. But in addition to the pros, H.265 also has disadvantages, namely, the cost of large capacities for image compression. H.265 is being actively implemented in various devices and is becoming more affordable. H.265 will bring end-user financial cost reduction for archive storage systems and reduced load on data transmission channels. With the advent of the new ULTRA HD format, you can change the head unit (recorder) in the existing system, and then proceed according to the design principle. For example, there are 10 analog cameras, 8 of them need to be changed, and 2 should be left. One camera looks into the corridor in which no one walks, and the other is a rotary analog with a large optical zoom. The recorder and 8 cameras are exchanged for the new ULTRA HD, without touching the already laid wires. The previous analog camera in the corridor and the PTZ are connected to the recorder. As a result, a new system was created at the facility with excellent picture quality and without the cost of installation and replacement of cable routes. A bonus is the opportunity to put several IP-cameras and connect them to the same registrar.

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