The TVP7002 only goes to 60Hz, but it does 1600x1200, is ~$4-$10 from digikey, and here's someone who figured out how to read from it (at very low FPS, far lower than it is capable of) with a microcontroller and (as stated) very little electronics knowledge: https://www.rpg.fi/desaster/blog/vga-framegrabbing-with-tvp7...