: You need A2x265.mp4.7z.001 , A2x265.mp4.7z.002 , and any subsequent parts (003, 004, etc.) in the same folder.
You cannot open a .002 file on its own. If you try to play it in a video player, it will likely return an error because the file header (the "instructions" for the video) is usually located in the first part ( .001 ). A2x265.mp4.7z.002
: This indicates it is the second part of a multi-volume archive. When large files are shared or stored, they are often "split" into smaller chunks for easier uploading or to bypass file size limits (like FAT32's 4GB limit). : You need A2x265
: Open a program like 7-Zip (Windows) or Keka/The Unarchiver (Mac). : This indicates it is the second part
To understand the file, we have to read the extensions from right to left: