HEVC was designed to substantially improve coding efficiency compared to H.264/MPEG-4 AVC, that is to say, to reduce bitrate requirements by half with comparable image quality. H.265 codec can offer us better quality in the same size compared to H.264 codec, or it can offer the same quality video in smaller size compared to H.264 codec, so H.265 codec is attracted by many users, they want to conve...