The "1080p" in indicates a progressive scan (each frame is a complete picture, not interlaced). This means that during fast movements—Renton running from the security guards through Princes Street Gardens, or the chaotic "relief" of the pub brawl—there is no tearing, no combing artifacts. Just smooth, cinematic motion.
This tag identifies the specific encoder or group responsible for the rip and conversion. Groups like "CM" typically have specific settings they favor for audio bitrates and encoding passes. Film Context Trainspotting.1996.1080p.BluRay.HEVC -CM-.mkv
: 1080p (1920x1080), providing high-definition clarity suitable for modern displays. The "1080p" in indicates a progressive scan (each