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Everyone's pursuit of HD is endless. In 2013, major security monitoring companies launched high-definition monitoring together, 4K skills have been pushed to the cusp. The 1080p resolution high-definition format has not yet been covered, and 4096×2160 is already coming. This original skill in the TV category was gradually introduced into the security profession. A stone provokes a thousand layers of waves. How can 4K bring innovations to the security profession? Today, there is no true and complete coverage in HD. Is it really necessary to promote 4K? Industry insiders have not concluded.