input field ones & input field twos project.

[PhoenixSun]

Помогите, не понимаю как правильно перевести input field ones & input field twos.

Контекст:This uses the frame signal of the input video to establish the pairing of 2:2 film sequences. i.e input field ones are the first field of the
film frames and input field twos are the second field of the film frames. If the input dominance is reversed the internal sequence may be
inverted using the FILM CTL - INVERT button.

[tiina]

may be
ones i twos-pervie i vtorie nomera vhodnih polei

[PhoenixSun]

мне, честно говоря, так тоже кажется