Re: Difference in luma-chroma delay of C64/C128 compared to standard S-video

Date: Tue, 5 Sep 2017 14:38:40 +0200
Message-Id: <>
> On 2017-09-03, at 23:30, Mia Magnusson <> wrote:
> I fired up my old CRT TV and also a supposedly good DVD player (Yamaha
> DVD-S1700), and my C128.
> Here are some pictures. [...]
> This is how my C128 looks on my modern Samsung plasma. I assume the TV
> set notices a delay and takes a bad guess how to adjust to the
> situation, making it even worse:

Having a look at this (the DVD stuff doesn't add any value here as its signal is probably way closer to the standard specs than what the computer gives) I would say:

a) you seem to have the colour shifted not only to the right but also down. You don't expect that adding some tens of metres of cable for chroma can fix this, do you?

b) I'd say you are rather lucky getting picture, which is that good. I recall my quest to get something even remotely palatable some time ago and all (six) but one were worse than yours.

The above is not to say that you should be happy with this picture. Surely not. What it is to say that we seem to be barking under the wrong tree here.

> I'm not alone getting this timing error. Look at the pictures on this
> blog:
> and
> (From the pictures we can assume that the combination of a C64/C128 and
> a modern Samsung flat screen gives a far worse picture than most other
> combinations, but if you look closely you will se a slight timing error
> on most of the other pictures aswell).

You can get all kinds of distortions if you get a visible output at all in the first place. I have only one converter that takes the signal from the 64 and outputs something acceptable to DVI - somewhat better than what you have shown here. Everything else was even worse.

SD! -

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Received on 2017-09-05 13:00:02

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