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The format supports "progressive downloading," allowing users to start watching a video while it is still being downloaded from a server. Common Distinctions

MP4 is the file format (the container), whereas MPEG-4 is the broad standard that includes various compression methods. 19448mp4

Unlike simple video files, MP4 is a "multimedia container." It can store video, audio, subtitles, and still images all in one file. It is designed to provide high-quality video at

It is designed to provide high-quality video at relatively small file sizes, making it the "gold standard" for internet streaming and YouTube. The format supports "progressive downloading

It is compatible with almost all modern hardware, including smartphones, smart TVs, and gaming consoles.

You may see files with extensions like .m4a (audio only) or .m4v (often used by Apple for video with DRM protection), both of which are based on the same Part 14 standard.