: Right-click the file → Properties → Details (Windows) to see if there is a contributing artist or original title.
: You likely found this in your Telegram Desktop or Telegram Video folder.
The filename "1_5021547738098041451mp4" follows the specific naming convention used by for downloaded media files. 1_5021547738098041451mp4
Files with these long numeric names often appear in these scenarios:
: The string of numbers is a unique ID generated by Telegram's servers to track media within their database. Common Contexts : Right-click the file → Properties → Details
: Search your "Saved Messages" or recent chats for "5021547738098041451" to find the original message.
: It is a video someone sent you or that you saved from a channel/group. Files with these long numeric names often appear
: View the file in a folder with "Large Icons" enabled to see a preview frame of the video.