H.265 / HEVC is the latest video compression standard which is based on H.264, driven by ever increasing demand for high definition and the rapid development of imaging technology, UHD becomes trend in today's television and video surveillance market. UHD standards for ultra high definition includes 4K UHD and 8K UHD. 4K UHD equals 3840 x 2160 (approximate 8.29 megapixels), while 8K UHD equals 7680x4320 (approximate 33.18 megapixels).
In today's video surveillance applications such as parking lot, hotel, safe city, harbor, air port and elsewhere large scaled and has growing demand on detail capturing, which, at the same time, pressuring on decoding and storage. Apparently, the introduction and development of H.265 standard brings extensive possibilities and optimism to the industry by addressing problems such as shortage of bandwidth, improving transmission efficiency and delivers other benefits.
In order to solve the high bandwidth problem for ultra high definition, the Moving Picture Experts Group (MPEG) developed the H.265/High Efficiency Video Coding. Compared with current mainstream H.264/MPEG-4 AVC, the H.265 is able to double the data compression ratio, while improve video quality with low bit-rate. The H.265 supports both 4K UHD and 8K UHD resolution up to 8192x4320. In conclusion, H.265 is capable of further reducing 50% the data rate requested for high quality video coding. Bitrate is acclaimed to have approximate 40% to 50% down at 1080p while rendering superb image quality. This enables IP camera to deliver smooth video with low bandwidth, which in turn, reducing the network bandwidth, and video storage size. Meanwhile, with the rapid development of 4G cellular mobile technology, the integration between the H.265 and 4G will have much possibilities.
HEVC/H.265 mainly features in the following aspects:
· Higher compression efficiency, when compared with H.264/AVC. In same resolution, HEVC/H.265 has lower bitrate than H.264/HEVC.
· Support high definition, ultra high definition video formats
· Support frame rate of 20-60 frame per second video decoding, has same flexibility like the H.264/AVC, supports maximum 172fps.
· Friendly network adaptation.
As leading and innovative corporate, Hisilicon and Ambarella can't resist its charm and prospect, both of them introducing the first H.265 SoC for ultra high definition IP cameras. Despite the reason that H.265 is still a new compression standard to video surveillance industry, the security camera manufacturers such as Hikvision and Dahua have already adopted H.265 in their latest product portfolio, including ultra high definition network camera, NVRs.
To start with cameras, Hikvision has a latest-released 2 megapixel H.265 low light smart camera DS-2CD5026FWD-(A)(P). As H.265 camera, the Darkfighter series ultra-low light Smart cameras are able to capture high quality colored images in dim light environment. DS-2CD5026FWD offers Full HD resolution with up to 60fps high frame rate, 120dB WDR, Auto Back Focus, P-Iris, PoE, 3D DNR and complete Smart Feature-set to meet a wide variety of applications. It supports H.265/H.264/MJPEG dual video compression, allowing over 40% lesser bandwidth use while acquiring outstanding image quality. Moreover, with its functions such as Intrusion Detection, Line Crossing Detection, Scene Change Detection, Audio Surge Detection, Audio Loss Detection, Defocus Detection, Face Detection, etc.
On video storage perspective, Dahua and Hikvision introduced a comprehensive H.265 4K NVR product lineup, which covers different demands from small to medium as well as large scaled applications. These network video recorders have capability to support up to 12 megapixel recording capability, supporting 1080p@60fps and H.265 preview and playback; 4 channel 4K resolution real time live view and playback; meanwhile, the NVR has many intelligent functions including smart video analysis, facial detection, privacy mask.
