Reply To: Downscaling: Problems connecting the OSSC Pro to my CRT TV via Scart

[osscboy]

Urks, should have typed out my reply elsewhere, it just vanished after clicking submit.

So firstly, sorry I’m replying this late but I didn’t get to fiddle some more with the OSSC till now.

Actually what did it, is exactly what you suggested, Bucko. I had to set it from “Auto” to “Extra AV Out” in the expansion settings and then switch to “RGBCS/RGBS”

Now I finally get a picture and sound, but with that different issues arose.

Firstly scaling, I set Retroarch to output at 640×480 and everything is centered perfectly on the 4:3 screen, nothing cut off at the edges. But when I run a standalone emu like Xemu and have Windows 11 set to 1440×960, a 4:3 res, the OSSC Pro scales it inside 1920x1080p oder 1200p, so I get black bars all around the picture. I already tried to set the aspect ratio manually, but for example, if set to 4:3 or Auto, it cuts off the edges or squishes it vertically. So my question, is there an option to manually set the HDMI input aspect ration to 4:3?

The second problem is with the refresh rate I presume. The games feel very sluggish, have tearing even when emu and windows it set to 60Hz. Did I get that wrong because maybe interlacing uses 60Hz for each line seperately, so it adds up to 120Hz? How do you decide between 60Hz and 59.95Hz?

Thirdly, I get constant vertical tearing all over the screen, most noticably when the camera is panning horizontally. Googling around, people seem to suggest it has something to do with getting the sync settings correct? Backporch is being mentioned a lot? So I found that setting but didn’t dare to change it yet, not knowing if I could also make it worse potentially. Do you know what to look for with the sync settings?

Oh, and one last question, in the scaling settings, there are listed several different algos like Nearest Neighbor, Bilinear (Sharp/Soft), Lanczos. Are these settings relevant for downscaling also or just for upscaling from AV to digital?