: The underscore ( _ ) instead of a dot ( . ) before "mp4" often suggests a sanitized filename used by content management systems, databases, or social media CDNs (Content Delivery Networks) to prevent file-parsing errors. Likely Contexts
: In some specialized learning management systems, video files are indexed with simple descriptive tags like [Topic]_[Format] . Dever_mp4
While "Dever" is a common surname (e.g., professional baseball player Rafael Devers) or a brand name, a file named "Dever_mp4" is most frequently found in: : The underscore ( _ ) instead of a dot (