MP4 typically uses the H.264 (AVC) or H.265 (HEVC) codecs for video and AAC for audio.

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

Unlike simple video files, MP4 is a "multimedia container." It can store video, audio, subtitles, and still images all in one file.

Разница между MPEG-4, AVC/H.264 и MP4 - Elecard

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.

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