Conversation

foone

@Foone

·

Dec 23, 2021

Replying to

@Foone

I like how you search for "hdmi to RCA" and google just gives up and assumes you typed it backwards and actually want RCA to HDMI

8

3

155

foone

@Foone

·

Dec 23, 2021

hmm. I think I maybe need some HDMI dummy plugs.

4

71

foone

@Foone

·

Dec 23, 2021

I think the problem is that one of these scalers supports 1080p and the chrome is noticing that and defaulting to it, and that's too high res to work.

2

69

foone

@Foone

·

Dec 23, 2021

but if I get a 720p dummy plug I can keep the chromecast from detecting the 1080p

1

74

foone

@Foone

·

Dec 23, 2021

now if only I could get an HDMI dummy plug that forces some 4:3 resolution

1

80

foone

@Foone

·

Dec 23, 2021

HEY GUESS WHAT it turns out "working around HDMI limitations" is yet another area which is getting fucked up by crytypocurrentseas.

4

10

159

foone

@Foone

·

Dec 23, 2021

as supposedly people are building systems full of GPUs to mi/ne co/ins but they use HDMI dummy plugs to make the GPUs activate, since some won't turn on until they detect some display connected

3

3

110

foone

@Foone

·

Dec 23, 2021

anyway I'm wrong, I don't want a dummy plug. I want a pass-through EDID emulator

2

84

foone

@Foone

·

Dec 23, 2021

I hate it when my EDID is unerected

2

5

107

foone

@Foone

·

Dec 23, 2021

this one has a lot of configurations but sadly none of them are "shitty 4:3 NTSC 720×480/640:480"

3

93

foone

@Foone

Here's a project someone did to fake out an HDMI monitor using an arduino. Maybe I could modify this into a modable EDID emulator?

github.com

GitHub - Edzelf/HDMI-simulator: Simulation of a HDMI monitor to be used on a "headless" mini PC.

Simulation of a HDMI monitor to be used on a "headless" mini PC. - GitHub - Edzelf/HDMI-simulator: Simulation of a HDMI monitor to be used on a "headless" mini PC.

9:22 PM · Dec 23, 2021

78

Likes

foone

@Foone

·

Dec 23, 2021

Replying to

@Foone

oh now this is interesting. so gofanco/prophecy also sells a device that talks to their emulators, which can reprogram them!

2

71

foone

@Foone

·

Dec 23, 2021

this makes sense, because as

@katie_panda

points out, these things are just an i2c eeprom. So of course they can be reprogrammed.

2

68

foone

@Foone

·

Dec 23, 2021

but apparently gofanco/prophecy enabled some way to write them. I wonder if it's standard i2c memory commands or if they did something weird and proprietary?

2

60

foone

@Foone

·

Dec 23, 2021

that's almost a screenshot of their software. they even show it setting up a 640x480 4:3 resolution JUST TO TAUNT ME

1

93

foone

@Foone

·

Dec 23, 2021

maybe I should just give up on my existing chromecast->HDMI2AV adapter system and just do a bunch of raspis in RCA-out mode

1

60

foone

@Foone

·

Dec 23, 2021

I'm mainly saying that to convince myself to take the EDID programmer out of my amazon cart as I'm tempted to buy it and document it

1

62

foone

@Foone

·

Dec 23, 2021

apparently you can't actually use raspis as a cast destination. you have to use alternate solutions and they're not as universal. So I'd have to give up the simplicity of cast-to-chromecast if I go the raspi route

1

49

foone

@Foone

·

Dec 23, 2021

or develop my own code to let you cast to raspis. that sounds hard

2

52

foone

@Foone

·

Dec 23, 2021

I could do a rackmount computer with a bunch of video outputs. I don't know any that have like 4 composite outputs, though, and 1U servers tend to not have much upgradability for new graphics cards

3

48

foone

@Foone

·

Dec 23, 2021

now that's fancy. but sadly it goes in the wrong direction

1

86

foone

@Foone

·

Dec 23, 2021

that's a neat thing. 8-channel soundcard

1

1

60

foone

@Foone

·

Dec 23, 2021

anyway I'm not sure there's good solutions at the moment to do this, at least not ones that are going to be remotely cost-comparable to the chromecasts+hdmi2av solution

1

41

foone

@Foone

·

Dec 23, 2021

there are some rackmount devices that can do composite/component HDMI switching, but I don't see anything that can do like 4-8 channel HDMI to RCA. It'd be nice if I could find one of those and then just plug a bunch of chromecasts into it

3

1

49

foone

@Foone

·

Dec 23, 2021

maybe I should just find or build an analog TV modulator that takes HDMI input

2

50

foone

@Foone

·

Dec 23, 2021

now that's nifty device. not exactly what I need, though

1

45

foone

@Foone

·

Dec 23, 2021

this is almost it. 4 HDMI inputs (with separate audio? uhh) and coax out. UNFORTUNATELY it's digital TV, so useless.

4

1

47

foone

@Foone

·

Dec 23, 2021

the HDBRIDGE3000 is a neat thing where you can fill in sub-modules and expand it out through all sorts of different encoders, including like 72 composite channels. Very neat. unfortunately, digital.

1

1

50

foone

@Foone

·

Dec 23, 2021

this handy device shows up when you search "NTSC modulator" and mentions that it modulates to ATSC QAM DVBT ISDBT! GREAT NONE OF THOSE ARE NTSC, THE ONE I WANT

2

42

foone

@Foone

·

Dec 23, 2021

maybe this is the sort of thing I should look for. It takes in IPTV (MPEG streams) and outputs a bunch of RF modulated NTSC/PAL/SECAM channels.

1

48

foone

@Foone

·

Dec 23, 2021

and it can even be combined with one of these and just shove in a bunch of chromecasts. No extra computers needed.

1

49

foone

@Foone

·

Dec 23, 2021

although the part that scares me is that there's no price on that page. that's not a good sign

2

2

47

foone

@Foone

·

Dec 23, 2021

YEAH NO

4

49

foone

@Foone

·

Dec 23, 2021

these are like 50$ each but they take in HDMI and have an NTSC coax out. So that replaces the HDMI-to-AV and the RF modulator.

3

56

foone

@Foone

·

Dec 23, 2021

do not adjust the audeo

4

5

69

foone

@Foone

·

Dec 23, 2021

ok I ordered a cheaper one from aliexpress. if it looks good I can maybe get more and build my NTSC TV network

3

41

foone

@Foone

·

Dec 23, 2021

oh good it's flexible to installa. also "portable to carry"? who is carrying around RF MODULATORS THAT REQUIRE AC POWER?

9

4

63

foone

@Foone

·

Dec 23, 2021

I mean, who ELSE?

1

1

57

foone

@Foone

·

Dec 23, 2021

I'm guessing these aren't really supposed to be rackmounted. They expect you to just screw them into a board or something

1

32

foone

@Foone

·

Dec 23, 2021

USELESS

1

1

45

foone

@Foone

·

Dec 23, 2021

why is it so hard to find hardware to broadcast on an analog format that that was turned off over a decade ago? (kinda)

1

51

Show replies