As stated the older C64s used the 5 pin video connector and it ONLY output composite video. A 8 pin video connector would obviously be of no use to that machine because the other pins would not be connected to anything in the computer. The big question is can I build some sort of cable adapter (active or passive) that can take the composite video from the older machines and separate it into a Chroma and a Luma (S-video like) signals.
I suspose anything that takes a composite signal must be able to decipher the 2 signals, so I suppose you could create something that would do that, but it wouldn't look any better than composite. What you probably want is something like the RetroTINK 2xMini or 2xPro which can take either composite or s-video and turn it into a digital signal (but I don't own either of these, so I am just making suggestions).
Schematic at 3:20
As stated the older C64s used the 5 pin video connector and it ONLY output composite video. A 8 pin video connector would obviously be of no use to that machine because the other pins would not be connected to anything in the computer. The big question is can I build some sort of cable adapter (active or passive) that can take the composite video from the older machines and separate it into a Chroma and a Luma (S-video like) signals.
I suspose anything that takes a composite signal must be able to decipher the 2 signals, so I suppose you could create something that would do that, but it wouldn't look any better than composite. What you probably want is something like the RetroTINK 2xMini or 2xPro which can take either composite or s-video and turn it into a digital signal (but I don't own either of these, so I am just making suggestions).