halcy 
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
LisPi@halcy Headcanon: They're sending analog audio & crt linescans.
CubeOfCheese@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.
Arbitrarily-complex digital protocols, not so much.
Piko Starsider 
@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.
Galbinus Caeli@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)
Also "color" has a very species specific definition. Unless you transmit many, many wavelengths, and hope to hit the right one(s)
RRB@rrb @GalbinusCaeli @starsider @halcy @cubeofcheese Among other more simple or primitive options like "mechanical television" or SSTV.
@lispi314 @halcy @rrb @cubeofcheese @starsider Mechanical and SSTV have the same color/frequency issue. Unless you are transmitting simple greyscale across a broad spectrum, you have to pick frequencies (colors) that match the specific receptor cells of your audience.
Kevin Karhan 
@lispi314 @halcy @rrb @[email protected] @GalbinusCaeli @starsider given that any interstellar civilization will have Zettaflops of computational power in their ships and Petaflops in their communicators that sip Nanowatt, it's expectable to have some autonegotiation on speed -kinda system.
Kevin Karhan :verified: (@[email protected])
@[email protected] I guess that to an extend stuff like analog #NTSC or even #HiVision + #MUSE is not just trivial to modulate but also that basically any space-faring civilization will have a decently performant #SDR setup. - I mean, #Hamradio operators do #SSTV for decades so the only reason they don't do #TV at fluent frame rates is lack of #spectrum to do so. But in space, that problem isn't existing so quasi-optical links in like 24GHz & 60GHz bands are trivial to setup. - Compared to the challenges of superluminal or spacetime warping travel, [autonegotiation and frequency selection for bidirectional audio & video feed](https://www.youtube.com/watch?v=uhIEfxRLiPI&pp=0gcJCRsBo7VqN5tD) [if not compression] is an absolutely trivial problem that I'm confident elementary schoolkids in a *"Star-Trek" - esque universe* doodle in their free time like some folks nowadays do breadboard. Also a lot of #encoding / #decoding & #compression schemes can be broken down into mathematical formulas and that [is a universal languague](https://www.youtube.com/watch?v=yCkD5GOjvx8) to the point that one could assume said communications to be like a sci-fi variant of [modem handshake](https://www.youtube.com/watch?v=HDhyayQ_Rk0) within a second as computational power and speeds should be abundant anyway... https://en.wikipedia.org/wiki/Hi-Vision https://en.wikipedia.org/wiki/Multiple_Sub-Nyquist_Sampling_Encoding https://en.wikipedia.org/wiki/Slow-scan_television
@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 My bad. You are right. I read Tchaikovsky's Children of {x} sequence during lockdown. That probably caused my memory glitch.
@GalbinusCaeli @starsider @lispi314 @halcy @cubeofcheese Edit accepted and executed.
Thanks.
@rrb @starsider @lispi314 @halcy @cubeofcheese
Yeah science fiction greatly simplifies by giving aliens binocular image-resolving eyes.
Yeah science fiction greatly simplifies by giving aliens binocular image-resolving eyes.
@GalbinusCaeli @starsider @lispi314 @halcy @cubeofcheese Function of our imagination. We can not really imagine non-human intelligence. That is why the post-singularity books tend to be boring.
chexum@GalbinusCaeli @starsider @lispi314 @halcy @cubeofcheese in addition to all this, the shows often make the local and remote viewer look at each other, even when viewed from an angle. For the purpose of “don’t look at the camera”, which is guaranteed with all 2D screens, the view is then forced to be three dimensional, and not just stereo, but volumetric, rotatable, which makes all the brainstorming so far useless :S
I love the arbitrary crt scanlines idea otherwise, sounds workable from a hw implementation point of view (modulo colour)