[troad]

Analogue TV would not be much better. How would the aliens know they're supposed to shoot an electron raygun left-to-right 486 times across a screen, then ignore the next 39 lines, then repeat this 29.97 times a second? And that's before you get into interlacing, horizontal blanking intervals, line 21, luma and chroma (encoded by reference to human eyesight), or different standards altogether like PAL or SECAM, etc.

Analogue TV has always felt so much more clever than digital TV to me, at least from a purely technical standpoint. I guess that's because we're mostly digital natives now, so video codecs seem ordinary and programmable electron rayguns do not.