Cm-chat-media-video-1367f1c09-0d27-.mov ⚡

: The string 1367f1c09-0d27- is a unique identifier assigned by the app's server to distinguish it from other files.

The prefix indicates that this is a temporary filename generated by a messaging app—most likely Facebook Messenger. cm : Likely stands for "Content Manager" or "Chat Media." cm-chat-media-video-1367f1c09-0d27-.mov

: Since it is a .mov file, you can open it with VLC Media Player or QuickTime Player . : The string 1367f1c09-0d27- is a unique identifier