If you are looking for a specific video, it likely originates from one of these official repositories: : Frequently uses the pixel format for its training and informational videos.
To narrow this down, could you clarify if this is a you found, a video title , or a technical spec from a website? Dod (281) mp4
: In many DHS media library entries, appears as a standard embed size for .mp4 video files. If you are looking for a specific video,
: The primary source for official Department of Defense video content. a video title