disclosed is a method and apparatus for highly stably and accurately generating a pal video signal by digital processing . the method and apparatus comprise generating a basic clock having a frequency which is 11 × n times as high as a horizontal synchronization frequency f h , producing digital data of orthogonal color subcarriers , color difference signals and a luminance signal respectively with the timing of the basic clock , multiplying the digital data d b - y d r - y of the color difference signals by the digital data dsin and dcos of the color subcarriers respectively to obtain digital data of two kinds of modulation signals , adding the digital data d y + s of the luminance signal to the digital data of the two modulation signals , and effecting digital / analog conversion of the addition to provide the pal video signal .