The undisputed king of third-party media players. It natively decodes x264 and DD5.1 audio without needing external codec packs.

: This stands for Web Download, indicating that the video was downloaded directly from the web, likely from a streaming platform or a website hosting the video.

"ESub" stands for English Subtitles. These are usually multiplexed (soft-coded) directly inside the media container (like an .MKV file).