: These are "release group" tags. Groups like WIKI or LIGR are collectives of individuals who "rip" content from official sources (like Blu-rays or streaming services) and encode them for public distribution.
: The file container. Unlike .mp4, the .mkv format is preferred for high-quality releases because it can support multiple audio tracks, subtitle streams, and chapters within a single file. Significance in Digital Distribution world4ufree-wiki-ligr-hevc720p-dual-mkv
: Also known as H.265 , this is a video compression standard. It allows for high-quality video at much smaller file sizes compared to the older H.264 (AVC) standard. 720p : This indicates the resolution ( pixels), often referred to as "HD Ready." : These are "release group" tags