The (1–4) represents a foundational era of "viral" DIY media that bridged the gap between raw 90s skate culture and the mainstream success of MTV's Jackass . Produced by Bam Margera and the CKY Crew (Camp Kill Yourself) in West Chester, Pennsylvania, these videos became underground sensations through grassroots distribution in skate shops.
The "[xvid]" tag in your query refers to a popular video codec used during the peak of early file-sharing platforms like LimeWire and Napster, where many fans first discovered these videos digitally. Overview of the CKY Series (1–4) CKY Trilogy [DVD] : Bam Margera, Brandon ... - Amazon.com CKY 1-4 [xvid]