I think it would need a converter. YPbPr is like the enhanced mode of S-Video (naturally produced by C128)... that is, S-Video has two signals: luma and chroma; but YPbPr has 3 signals: luma, partial "blue", and partial "red" (but "blue" and especially "red" are just sloppy names for the real color content...)
In other words, YPbPr is enhanced because the chorma (hue + "saturation") is now two seperate lines (Pb and Pr) while the C64/C128 (others?) only output a single "chroma" line.
Ummm, I imagine it might be possible with a simple resistor network when converting YUV (PAL video) because the color axes are orthigonal and the same scale... but converting YIQ (NTSC video) seems more difficult due to non-orthogonal axes and different scales.
Maybe a device like this? I don't know if it is NTSC or PAL. It makes a HUGE difference, so please check before purchase!
Hm, of course it's not problem to use CVBS2SVHS cable, but really I need PAL version. I didn't knew that PAL and NTSC are so different... I try to find it here in Slovakia, we have standard PAL, so I mean that NTSC devices & cables are only for ask...
Tomorrow I ask our dealer for SVHS 2 RGB reduction - it looks like reduction, no as converter 'cause I found few, sadly not in Slovak markets and if here, too precious.
Thank you Robert.
Commodore 64 was great, Commodore 128 is bigger, better, faster and more powerful... Commodore 65 was almost here, but C256 is coming and it will be earthquake...
Once it is in YPbPr format it should be compatible with any monitor that accepts (50Hz) component video. But yeah, the S-Video (SVHS) which is output by C128 (C64 etc.) is definately NTSC/PAL specific.
Also, I misunderstood... I see now you want to use single RCA connector from C128 (composite video, or CVBS). I don't think composite (CVBS) gives best quality. If possible, you should try to get two RCA connectors from C128 (luma and chroma)... this is classic CBM monitor cable. Newer cables have a single S-Video (SVHS) plug, but that connector has the same luma and chroma signals as the classic 2 RCA plugs. This gives better quality, and what I was thinking when I posted the link above.
If you really must use single RCA cable from C128 (composite / CVBS) then it might difficult. There are many YPbPr to Composite coverters to choose from, but it is almost impossible to find the other direction: Composite to YPbPr... after searching for several minutes, I could only find one and it is rather expensive.
So what you are now saying, using CVBS-to-SVHS as a first stage might be cheaper, because once you have SVHS (S-Video) there are numerous adapters available to choose (like my original link). But really, you should be able to buy simple cable for C128 that will directly give you S-Video... like this one eBay or this one on Amazon.