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YBrPr CRT Question - Pink/Purple at Startup Only

Posted: Sat Jan 15, 2022 10:25 pm
by ItsACerealWow
Hello MiSTerFPGA community,

I have a super n00b question, but I've been gaming with my MiSTer primarily on a CRT and was wondering if it's normal to have the few seconds of pink/purple video output upon powering on the MiSTer before the video output transitions to the proper YPbPr color space. This is using a standard (analog) I/O board with a DB15-to-RCA cable for component video output and 3.5mm stereo cable for audio, and ypbpr=1 in the mister.ini file. Everything else works fantastically and video output is perfect after a few seconds. Is this normal?

Sorry if this question has been asked before - all I could find upon research was users with a constant pink-purple video output needing to set ypbpr=1 in their .ini file.

Any insights are appreciated! Thanks :D

Re: YBrPr CRT Question - Pink/Purple at Startup Only

Posted: Sat Jan 15, 2022 11:58 pm
by Wave
Yes, I see that on mine too, same setup. It doesn't seem to be a problem or abnormal. If the wrong colors stick around, then you might have a problem.

Re: YBrPr CRT Question - Pink/Purple at Startup Only

Posted: Sun Jan 16, 2022 4:06 am
by Sarge
Mine is the same way. I think it's normal.

Re: YBrPr CRT Question - Pink/Purple at Startup Only

Posted: Sun Jan 16, 2022 6:33 am
by FoxbatStargazer
The purple is what you see feeding raw RGB into component input. It takes a second or two for Mister's ypbpr correction to kick in, so yeah, perfectly normal.