The source website where the file was hosted.
Matroska Video, a flexible container format that can hold multiple video, audio, and subtitle tracks in one file. Phoenix 2020 (TV Series 2020–2021) - IMDb
This series is a modern remake of the 2004 classic Korean drama.
HEVC (High Efficiency Video Coding), also known as x265, which provides high quality at smaller file sizes.
The string "PHNXSKMHD" appears to be a combined abbreviation for oe N i X and the distribution site SK y M ovies HD . Media Identification Series Title: Phoenix 2020 (the "PHNX" in the file name). Release Year: 2020. Episode: Season 1, Episode 1 (S01E01). Format Details: Resolution: 720p (High Definition).
Advanced Audio Coding, a standard format for lossy digital audio compression.