Create a black and white texture to be used as the interlace.

(I did this in blender with a texture on a plane, but it can be done with any image creation program)
[![enter image description here][1]][1]


Then use that image to combine different versions of the base image that have been distressed with different filters.

[![enter image description here][2]][2]
(Click on the image to enlarge)


If you animate the values for the distortion filters or animate an inversion of the interlace texture you can maybe emulate NTSC in all of its ugliness...


  [1]: https://i.sstatic.net/bAIvG.png
  [2]: https://i.sstatic.net/CCq9k.png