MP4

MP4 (plural MP4s)

1. (file format) Abbreviation of MPEG-4 Part 14, a file format for playing music and videos.
   • 2022 March 3, Blake Gopnik, “One Year After Beeple, the NFT Has Changed Artists. Has It Changed Art?”, in The New York Times‎^[1], archived from the original on 3 March 2022:

     Typically, the art object that gets NFT’d is a digital file — maybe a JPEG image or an MP4 video — that lives on some hard drive, and that looks or sounds precisely the way it would have in the decades before NFTs came along.

• MP4 player

• MP3

Partial calque of English MP4. From English MP4 + 四 (sì, “four”).

MP4

1. MP4
2. short for MP4播放器 (áimu-pì-sì bōfàngqì)

• MP3 (áimu-pì-sān)