The phrase appears to be a specific filename or metadata tag for a video file, likely a movie or TV show. This query could refer to a few different things:
: A fictionalized biographical drama about Marilyn Monroe. blonde-480pdual-mkv
: Specifically, video content related to the album (like the Endless film). The phrase appears to be a specific filename
Could you please clarify if you are looking for information about a , a music video , or if you are trying to identify a file you found? a music video
: Filenames using this specific "480p dual mkv" format are very common in those categories.