: Use VLC for playback, as its built-in codecs are more secure against potential buffer overflow exploits found in older media players.
: You can use the MediaInfo tool to view the file's internal metadata, which may reveal the original creation date, encoder, and resolution (confirming if "468" indeed refers to height). Girls Forever (468) mp4
: The parenthetical number often denotes a specific file from a collection (e.g., a "pack" containing 500+ videos). : Use VLC for playback, as its built-in