@halcy 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 [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 to the point that one could assume said communications to be like a sci-fi variant of modem handshake 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

@magnetic_tape next thing you gonna tell me you have a #HiVision setup as well?

https://www.youtube.com/watch?v=LkQEobE2RUk
https://www.youtube.com/watch?v=hUQvnxxTuM4

@emsquared you mean #HiVision, don't you?

https://www.youtube.com/watch?v=LkQEobE2RUk
https://www.youtube.com/watch?v=hUQvnxxTuM4

@fuchsiii @foone I mean, it's a weird analog (!) optical (!!) media that suffers from disc-rot (!!!) and used long infrared lasers (longer wavelenght than the IR laser diodes for CDs as it predates CDs (!!!!) and it did #HD (or rather #HiVision) with #compression before #DVD and even #Dtheater existed!

• It's a far deeper #RabbitHole than #HDDVD and a more pricy one too!

https://www.youtube.com/watch?v=LkQEobE2RUk
https://www.youtube.com/watch?v=hUQvnxxTuM4

@johnmacintosh #Funfact: #NHK's #HiVision standard used #MUSE as an #interlacing format to deliver that with #analog signals...

https://www.youtube.com/watch?v=LkQEobE2RUk