: To extract the final video, you cannot just use part10.rar on its own. You must download all sequential parts (from part1 up to the final part) and keep them in the exact same folder.
It sounds like you’re referring to a specific split archive file: . FC2PPV-3620789-2-4K.part10.rar
: If you get a "CRC failed" error, it often means one of the parts is corrupted. You may need to redownload Part 10 specifically. : To extract the final video, you cannot just use part10