in a video signal recording / reproducing apparatus for emphasizing an input video signal , recording by adding an additional signal necessary for recording , and de - emphasizing when reproducing , the emphasis processing is stopped on the time axis in a period in which the additional signal is to be added . besides , by adding an additional signal before emphasis processing , the waveform deterioration in the end portion of the effective period occurring due to the addition of additional signal after emphasis processing is decreased , and a favorable waveform reproduction is realized over the entire period of the effective portions .