This is a linguistic oddity. A "long dozen" traditionally means 13 items (a baker's dozen). "Longdozen" as a single word does not exist in dictionaries. It is likely:
: [Provide your critique of the video, analyzing its components]. Amy Dark Longdozen 36 -.wmv--Por
Amy_Dark_Longdozen_36_Por.mov
Likely refers to the performer or a specific character persona within the content. This is a linguistic oddity