: This typically stands for "High Quality." It's a subjective term that suggests the video is of a higher quality than standard, often implying good resolution, bitrate, and encoding settings.
In terms of video quality, the use of HEVC x265 encoding at 1080p resolution allows for a high-quality viewing experience. The efficiency of the HEVC x265 encoding standard means that high-quality videos can be stored and streamed with reduced bandwidth requirements.