isMp4
ts
import { isMp4 } from 'fileasy'
// or
import { isMp4 } from 'fileasy/dist/judge/video'
Example
ts
import { isMp4 } from 'fileasy'
console.log(isMp4(file as File))
// boolean
console.log(isMp4(base64 as string))
// boolean