: This refers to the color depth. Most standard videos are 8-bit; 10-bit allows for billions more colors, which eliminates "banding" in shadows and gradients, making the image look much smoother.
: The resolution (1280 x 720 pixels). This is High Definition, though lower than 1080p or 4K. Video Quality & Encoding Andor.S01E11.720p.10bit.WEBRip.2CH.x265.HEVC-PS...
: This is the video codec (High Efficiency Video Coding). It is much more advanced than the older x264, allowing for high visual quality at a significantly smaller file size. : This refers to the color depth