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Composite from UMSA
sozuke:
Hi guys!
I've got Arcadeforge's ultimate SCART adapter hooked up to an AMD graphics card running CRT emudriver. Works perfectly when outputting through a SCART cable to my european CRT.
I'd really like to compare this flawless RBG picture to the composite picture I actually grew up with, so I tried hooking up a SCART -> composite cable (SCART in one end, yellow/red/white RCA in the other) to a composite -> SCART adapter (which has SCART out on one side and yellow/red/white RCA in on the other), essentially making a cable that has SCART in both ends but transfers video over composite only.
I'm just getting a black screen, though. Can anyone explain what I'm doing wrong? Any ideas on how to get composite from the UMSA?
Zebidee:
The UMSA is all about bringing RGB goodness to TVs, rather than composite.
You can't get composite out of RGB without using an active transcoder. Other than the UMSA, everything you have are just passive connectors.
--- Quote ---composite -> SCART adapter (which has SCART out on one side and yellow/red/white RCA in on the other)
--- End quote ---
Pretty sure I have one. It is a simple passthrough.
There are some fairly cheap RGB->SCART->composite transcoder boxes on aliexpress I think.
dmckean:
RGB to composite transcoders all seem to have colorspace issues, even the pricey ones.
Zebidee:
--- Quote from: dmckean on February 21, 2021, 04:36:56 pm ---RGB to composite transcoders all seem to have colorspace issues, even the pricey ones.
--- End quote ---
Transcoding RGB colour to composite is incredibly lossy, like squeezing a bucket of data into a teacup. But if you are happy with composite, you are probably OK with that.
dmckean:
--- Quote from: Zebidee on February 21, 2021, 07:50:58 pm ---
--- Quote from: dmckean on February 21, 2021, 04:36:56 pm ---RGB to composite transcoders all seem to have colorspace issues, even the pricey ones.
--- End quote ---
Transcoding RGB colour to composite is incredibly lossy, like squeezing a bucket of data into a teacup. But if you are happy with composite, you are probably OK with that.
--- End quote ---
I think a lot of people are looking to capture the original look of consoles they're emulating, but RGB to composite transcoders really don't accomplish that so no one ends up happy.