Adult Asian films have a long commercial history. In the late 20th century, VHS and later DVD sales and rentals formed the backbone of the industry. Studios produced feature-length movies and shorter scenes, distributed through specialized retailers and mail-order catalogs. The arrival of broadband internet in the early 2000s changed everything. High-speed connections made it practical to transfer large video files, and peer-to-peer technologies such as BitTorrent enabled large-scale sharing of copyrighted material.