This usually means a previous version of the file had an error (like out-of-sync audio or a glitchy frame) and this version has been corrected. Why 360p and x264 Matter in 2024

In areas where high-speed internet is expensive or unreliable, smaller files are the only way to enjoy media without constant buffering.

This is the resolution. While 1080p is standard for TVs, 360p is optimized for mobile viewing and users with limited data plans.

To understand what you are looking at, you have to peel back the layers of the naming convention: