Being a BluRay rip, this file offers significantly higher bitrate and visual fidelity than standard web or TV broadcasts.
psejta3 (the team responsible for encoding and releasing the file) About the Series Dwa.Czt3r7.S01E07.PL.720p.BluRay.x264-psejta3.mkv
Likely contains a Polish audio track or hardcoded Polish subtitles, as per the "PL" tag. Being a BluRay rip, this file offers significantly