Formally known as MPEG-4 Part 14, MP4 is a digital container format most commonly used to store video and audio. It is based on the ISO Base Media File Format .

Engine Cooling Fans | Military Vehicles - AMETEK Airtechnology

Beyond audio and video, an MP4 container can house subtitles, still images, and advanced metadata like 3D graphics and digital rights management (DRM).

The file is composed of various "boxes" or "atoms" (like mdia or hdlr ) that describe the media's timing, language, and codec information.

Manufactured from cast aluminium alloy, they are robust enough to meet government defence equipment specifications for military vehicle engine cooling.

Its primary advantage is high compression capability without significant quality loss, making it ideal for internet streaming and mobile devices.