MP4, or MPEG-4 Part 14, is a digital multimedia container format. While it can store subtitles and still images, it is most famous for housing high-quality video and audio while keeping file sizes small.
Whether you are on an iPhone, an Android, or a Windows PC, an MP4 file will play without needing extra plugins.
Often used by Apple products; it’s great for high-end editing but can result in very large files.
The phrase translates from Hindi to English as "You [are] MP4." In the context of video technology and content creation, this often refers to the common practice of identifying H.264 video encoding simply as an "MP4" format.
Why does every social media platform practically demand this format?