Use a universal media player like VLC Media Player , which can often play files even if they have slight corruption or unusual encoding.
Right-click the file and select Properties (Windows) or Get Info (Mac). A very small file (under 1MB) is likely a short clip or an ad; a larger file (above 10MB) is more likely a full video. xdut (5).mp4
The (5) suggests this is the fifth copy of a file named "xdut" downloaded to the same folder. Use a universal media player like VLC Media
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: The (5) suggests this is the fifth copy
Look at your recently used apps. Did you save a video from a group chat or a specific website right before this appeared?
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.
Short, four-letter alphanumeric strings like "xdut" are common naming conventions for videos saved from platforms like Telegram , Discord , or certain TikTok downloaders.