When a hard drive is wiped and files are recovered, the software cannot always find the original name.
If you have received this file from an unknown source, follow these safety steps: b_045.mp4
"b_045.mp4" is a cryptic or viral video file name that typically appears within internet subcultures associated with , ARG (Alternate Reality Games) , or Uncanny/Horror memes . When a hard drive is wiped and files
Run the file through VirusTotal before opening to ensure it isn't carrying malware. ARG (Alternate Reality Games)
Providing the source where you saw the name will help narrow down the specific "lore" behind it.
Frequently uses alphanumeric strings for cached videos.