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Definition MP4 in British English

MP4 noun

noun
/ˌem piː ˈfɔː(r)/
1

a method of reducing the size of a computer file that contains video and audio so that it can be sent quickly by e-mail or over the Internet

Synonyms and related words
1.1

a file produced by this method

Synonyms and related words
Definition MP4 in British English