Because high-definition video files can be several gigabytes in size, they are often split into smaller "parts" (like .part1.rar , .part2.rar ) to make downloading more stable and to circumvent file size limits on various hosting platforms. Decompressing Multi-Part RAR Files
You cannot open .part1 without having every subsequent part (part2, part3, etc.) in the same folder. If one piece is missing, the decompression will fail. FC2PPV-4549341-1.part1.rar
This occurs if you haven't downloaded all the parts or if they aren't named identically (e.g., if one part has an extra space in the filename).
Attackers often use popular PPV IDs to disguise "trojans" or "adware." If an extracted file ends in .exe or .scr instead of a video format, do not open it.