expect(command).to.includes('-f mp4')
expect(command).to.includes('-movflags faststart')
expect(command).to.includes('-b:a 256k')
expect(command).to.includes('-r 25')
expect(command).to.includes('-level:v 3.1')
expect(command).to.includes('-g:v 50')
expect(command).to.includes('-f mp4')
expect(command).to.includes('-movflags faststart')
expect(command).to.includes('-b:a 256k')
expect(command).to.includes('-r 25')
expect(command).to.includes('-level:v 3.1')
expect(command).to.includes('-g:v 50')