The name provides specific metadata about the recording: VID : Short for "Video," identifying the media type. 20210111 : The date the video was taken ( January 11, 2021 ).

: The time of day ( 14:57:08 or 2:57 PM and 8 seconds ).

: The file extension. MP4 (MPEG-4 Part 14) is a universal multimedia container that stores video, audio, and subtitles. How to Use This File

: For more technical details (like resolution or frame rate), right-click the file and select Properties (Windows) or Get Info (Mac). On Windows, the Details tab will show the specific codecs and length.

: Most modern operating systems include native players. On a Windows PC, you can right-click the file and select "Open with" to choose a player like Windows Media Player or a third-party option like VLC Player .

: A millisecond or unique sequence ID to distinguish it from other videos taken in the same second.

This filename follows a standard timestamp pattern often used by Android devices and digital cameras to record when a video was captured.

: If you have many files with similar names, consider moving them into folders by year (2021) or month (January) to keep your library manageable. How to Create and Open an MP4 File