: This refers to the color depth. Most standard videos use 8-bit color; 10-bit allows for billions more colors, which prevents "banding" in gradients (like a sunset or shadows) and makes the image look smoother.
: Also known as H.265 . This is a modern compression standard that allows the video to maintain high quality while being about 50% smaller in file size than older formats. The Customization: "COMBINED" and "Hindi" : This refers to the color depth
The format is the "envelope" that holds the video, multiple audio tracks, and subtitle tracks together. It is the preferred format for high-quality rips because it can handle almost any type of data without losing quality. 10-bit allows for billions more colors