All file extensions
.MP4 File
What is it?
MP4 is the most widely supported video container format, combining compressed video and audio in one file.
How do I open it?
Plays in virtually any media player (VLC, Windows Media Player, QuickTime) and browser.
Is it safe?
Yes, MP4 only contains media data.
Can I delete it?
Safe to delete once you no longer need the video — large video files are a common, safe way to free up storage.