Driven by ever growing demand for high definition and the development of image processing, 4K is definitely playing an increasingly vital role in video surveillance, especially in applications such as safe cities, parking lots, harbours, plazas and elsewhere. In fact, any large-scale projects with a strong demand for capturing detail while also focusing on decoding and storage.
Fortunately, the introduction and development of H.265 brings extensive possibilities and optimism to the industry by addressing problems such as limited bandwidth, improved transmission efficiency and other benefits.
Benefits of H.265
High Efficiency Video Coding (HEVC), also known as H.265, is a proposed video compression standard, a successor to H.264/MPEG-4 AVC (Advanced Video Coding), currently under joint development by the ISO/IEC Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group (VCEG).
Compared to the current mainstream AVC standard H.264, H.265 is said to be capable of further reducing the data rate required for high quality video coding by 50%. The bitrate required is said to be 40% to 50% lower at 1080p while rendering superb image quality.
Summarising, H.265 can reduce video footage to a great extent, while delivering smooth video over low bandwidth. All these benefits drive market demand for 4K/Ultra HD. In addition, with the fast development of 4G and mobile technology, the integration between the two industries will provide additional possibilities.
Dahua’s H.265 product line-up
Despite all the benefits, the adoption of H.265 as a compression standard is still new to the video surveillance industry, which means it will take some time to become a standard. Dahua Technology is already developing 4K H.265 solutions and delivering it to clients. The company has adopted H.265 in its latest product portfolio, including network cameras, NVRs, transmission devices as well as video-wall systems.
To start with, cameras, Dahua has a latest-released 5.0-megapixel ultra-smart network camera that uses the H.265/H.264 dual codec, requiring 40% less bandwidth while offering outstanding image quality. Moreover, with functions such as ultra-defog, ROI and intelligent detection, the camera can make surveillance clearer, smarter and smoother; based on this trend, Dahua foresees more H.265 cameras with different resolutions are on its way.
When it comes to back-end devices, Dahua was the first in industry to introduce a comprehensive H.2654K NVR product line-up, which covers various demands, including small-to-medium as well as large-scaled applications. These NVRs offer up to 12.0-megapixel decoding capabilities, supporting 1080p@60fps and H.265 preview and playback; and 4-channel 4K real-time live view and playback. Its intelligence functions including behavioural analysis, facial detection etc. What’s worth a mention is that the R&D team focused on energy consumption during the planning phase to make the product eco-friendly.
In addition, Dahua also introduced a control platform, the M70 with H.265 as standard. The platform can decode multiple channels of H.265 videos at the same time, and thanks to a modular design, the M70 can handle up to 40-channel UHD video outputs with each supporting H.265 decoding. What’s more, these HD output videos can be presented as an integrated image by combining HD outputs.
H.265 brings more possibilities
“Obviously, H.265 is one of the major compression standards that allows us to implement UHD solutions, such as 4K or even 8K, which is definitely the trend for video surveillance going forward,” says James Wang, product director of Dahua Technology.
“The benefits H.265 brings are not limited to the above,” Wang continues, “just like a magician’s hat, you can expect much more from it. For example, our R&D has delivered great performance on bitrate control, image quality balance as well as intelligent analytics and tracking.”
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