This is a critical abbreviation. stands for Muxed Subtitles or Hardcoded Subtitles? In most cases on HDMovies4u, "MSubs" means the subtitles are embedded but can be turned on/off (soft subs). However, sometimes it means "Muxed" into the container, meaning they are not burned into the video but are included as a separate track (typically English or Hindi subtitles for the Korean dialogue).
This is the video codec. x264 is an open-source library for encoding H.264/AVC video. It is the industry standard for 720p rips because it offers excellent compression (small file size) without ruining the visual fidelity. Most media players (VLC, MX Player, PotPlayer) play x264 files natively.
This refers to the vertical resolution: 1280x720 pixels. For a show with fast zombie action, 720p is the "sweet spot" for pirates. It offers clear enough detail to see gore and facial expressions without making the file too large (usually 300MB–700MB per episode).
While the desire to access content for free is understandable, it's crucial to prioritize safety, legality, and supporting creators. Explore the numerous legitimate options available to enjoy your favorite TV shows and movies.