This is a distinction without meaning: all digital anything is analogue if you look closely enough
> And that was because computing power back then was non-existent so they didn't use any kind of compression?
Compression is not a medium-level detail. You can easily store compressed data on a laserdisc.
No, with digital, you need encoding. How can you even compare binary with embedded images.
Your CED or laserdisc player needs to be smart enough to be able to decode whatever you put on it, which- in the era that they were relevant- pretty severely limited what you could do.