High Efficiency Video Coding is a highly efficient system for video images encoding. H.265/HEVC standard offers nearly double data compression with the same video quality or much better quality with the same bitrate value compared with H.264/AVC. Thanks to reducing the bandwidth by approx. 50% in relation to H.264, the demand for disc space is reduced significantly.
The H.265 standard is using CTB (Coding Tree Block) design of maximum size of 64x64 pixels, whereas sizes of macro blocks in H.264 are 16x16 pixels.
H.265 standard was introduced in 2013. It supports resolution up to 8190x4320 pixels, which makes the codec is able to compress UHDTV video streams. H.265 standard finds its application, among others, in IP monitoring systems, where camcorders with resolutions exceeding Full HD are being used increasingly. Thanks to the use of H.265 codec in monitoring devices, we gain a much more detailed image at the same bandwidth.