Short, four-letter alphanumeric strings like "xdut" are common naming conventions for videos saved from platforms like Telegram , Discord , or certain TikTok downloaders.
Look at your recently used apps. Did you save a video from a group chat or a specific website right before this appeared? xdut (5).mp4
The filename "xdut (5).mp4" is a generic, system-generated name typically created when a file is downloaded multiple times or renamed by an automated process. The filename "xdut (5)
If you found this in a hidden folder, it may be a cached video or an ad from a mobile game or app. How to safely check the content: xdut (5).mp4
Use a universal media player like VLC Media Player , which can often play files even if they have slight corruption or unusual encoding.