This will help me give you a more specific guide.
: Use standard players like VLC Media Player or QuickTime to open .mp4 files. Dod (28) mp4
If you are looking for a guide on DoD security protocols (sometimes associated with privacy management), the Identity Awareness, Protection, and Management (IAPM) Guide provides step-by-step instructions on implementing security settings for mobile apps and online services. 2. Media File Management (MP4) This will help me give you a more specific guide