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:
Use a universal media player like VLC Media Player , which can often play files even if they have slight corruption or unusual encoding. xdut (5).mp4
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. If you found this in a hidden folder,
Short, four-letter alphanumeric strings like "xdut" are common naming conventions for videos saved from platforms like Telegram , Discord , or certain TikTok downloaders. or certain TikTok downloaders.