a common affordance in scifi is that spaceships can just video call each other, even spaceships of different races who have never met before. this implies that there is a sufficiently mathematically obvious RTC protocol that all spacefaring races eventually discover
„but halcy, the computer simply adapts the signal“ try piping an opus bitstream into chatgpt, see how that goes
@halcy Headcanon: They're sending analog audio & crt linescans.
@lispi314 @halcy yeah I think the most universal protocol would be no protocol
@cubeofcheese @halcy There's some synchronization stuff involved with radio television but it's plausible to make a dumb program to automatically handle it if one expects that format (especially with an operator actively directing the program).

Arbitrarily-complex digital protocols, not so much.
@lispi314 @halcy @cubeofcheese And a not-so-dumb program (or ML model) that looks for circles in the picture and other clues to adjust the aspect ratio automatically, as well as orientation. Although most automatically decoded transmissions would be black and white, since color is much more complex. Maybe the same model that detects orientation can also detect color signals somehow.
@starsider @lispi314 @halcy @cubeofcheese
Also "color" has a very species specific definition. Unless you transmit many, many wavelengths, and hope to hit the right one(s)

@rrb @starsider @lispi314 @halcy @cubeofcheese Interlaced formats are going to be even more problematic since they depend on two frame encoding mechanically, and on image persistence biologically.

Your best bet is going to be some form of bitmap, with a significant training/tutorial component.

@GalbinusCaeli @rrb @lispi314 @halcy @cubeofcheese I'm sure a circle detector could detect any number of sub-frames of arbitrary order of interlacing: there's only few ways to make all circles match perfectly with all subframes, and of them, one combination will have the least amount of noise.

@starsider @rrb @lispi314 @halcy @cubeofcheese Transmitting circles would be a useful form of tutorial/training.

Assuming all sapients have the same facination with circles that we inherited from the ancient greeks. (Note that the Egyptians were kinda into triangles.)

@GalbinusCaeli @starsider @lispi314 @halcy @cubeofcheese I would go more for k dimensional simplexes with k going from 0 to ,,,
@GalbinusCaeli @starsider @lispi314 @halcy @cubeofcheese Or maybe look at how insect, cephalopod, and corvid cognition works to see what generalizes better.

@GalbinusCaeli @starsider @lispi314 @halcy @cubeofcheese Edit accepted and executed.

Thanks.