: If you found this after running data recovery software, it represents a recovered preview image rather than the full video file. Is it safe to delete?
: Many Android devices and apps (like WhatsApp or Telegram) generate these files in hidden folders (e.g., .thumbnails ) to speed up gallery scrolling. 40489A9A Mp4 Thumbs jpg
: The standard image file format for the thumbnail itself. Common Contexts : If you found this after running data