Strings like this are frequently used in file-sharing communities or internal archiving systems to quickly describe the exact technical specifications of a video file. In this case, it likely refers to a 720p HD video file encoded with the HEVC (H.265) codec using the Rec. 2020 color space at 10-bit depth, compressed within a .7z archive.
: Likely refers to Rec. 2020 (BT.2020), which is the ITU-R recommendation for Ultra High Definition Television (UHDTV) parameters, including its wide color gamut. 720 : Refers to 720p resolution ( MSSJSSHDTVHEVC2020720107z
: Indicates 10-bit color depth , which allows for over a billion colors and smoother gradients compared to standard 8-bit video. Strings like this are frequently used in file-sharing
: High Efficiency Video Coding, also known as H.265 . It is a video compression standard designed to deliver high-quality video at roughly half the bitrate of its predecessor, H.264. : Likely refers to Rec