H.265, also known as HEVC (High-Efficiency Video Coding), is the successor to the H.264 video compression standard, aimed at improving the efficiency of video compression for high-quality video streaming.
H.265 IP cameras capture raw footage according to the user’s recording mode settings and encode the videos in H.265 compression after processing the images. H.265 improves upon H.264, which only allows a maximum of 16×16 pixel macroblocks to process information, by permitting larger block sizes of up to 64×64 pixel Coding Tree Units (CTUs), resulting in greater encoding efficiency – especially for larger frame sizes like 4K resolution. Other features like improved deblocking filter and motion vector prediction also contribute to the efficiency of H.265 IP cameras.
Put simply, H.265 CCTV cameras can encode videos at the lowest possible bitrate, while retaining a certain level of video quality, resulting in optimal compression and bandwidth utilization.
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