Hi everyone, I want to add a S video output to a VCR. I do understand that people in here might have knowledge about adding and doing a mod of a S video output.
I have a Sony SLV-ED1PS VCR. and here is the diagram for it Where I highlighted in Yellow and blue I think I found V - and not sure for C output as I don’t know if that means it’s C - chrominance? S Video needs only 3 connections
Is V - and 2. Is C - and 3. Is GND. I need help here? Also with any composite video port these 3 wires are already in every device all ready. The only difference with composite and S video is that the V- and the C- are mixed together in composite Video vs S Video they are separated to get rid of interference and makes the picture quality a bit better.
Yes, that is correct. I’m only looking for Y output and C output only. As I want to separated Y and C signals from mixing with each other as that is how composite video works.
It’s not clear to me that Y (luminance) is available as an output. The schematic is a bit blurry and I can’t see what all the pins off of the chip say. But it seems entirely possible that composite is being created internally within the chip rather than in an analog mix of Y and C.
However, you could probably find a way to decode the composite signal into Y and C. This might not offer any improvement to the video quality over composite, but if the goal is simply to produce the S-video format, this could be an option.
Thanks for your reply. Here is a better picture of the video chip. “Pin 50 says C out” I’m guessing that could be chrominance? Also I highlighted in purple where ‘Pin 50 that is name C out’ makes a connection to “Pin 55 name CIN” and maybe brings the chrominance signal into the video chip and come out in “Pin 57 as video out” as that is what it is name it also it probably looks like this luminance V- and C - and goes straight to RCA output. But what do you think going off what I said here and what the diagram showing? and also for a another picture
I draw a green line showing if I was for example to disconnect Pin 55 from video chip and send that possible C- chrominance signal to the future S video output maybe that would work?
