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

Date: Fri, 1 Sep 2017 23:28:01 +0200
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> On 2017-09-01, at 21:51, Marko Mäkelä <> wrote:
> On Fri, Sep 01, 2017 at 11:45:35AM +0200, wrote:
>> Just for completeness - a delay line is not *only* for PAL, where it could theoretically be omitted, leading to Hannover bars effect ;-)
> This was a new term for me.

Probably because you haven't lost too many hours because somebody (sometimes me) forgot to re-patch cables correctly on the panel ;-)

>> it is also required for SECAM, where it acts as temporary storage between two consecutive lines. True there were no SECAM outputting CBM machines :-)
> Were there actually any SECAM outputting home computers, or were they all RGB or RGBI through SCART?

I don't recall any. At least of the original brands. Maybe some "clones" made in the USSR as Levente mentioned.

> I wonder how/if the French people used computer-generated graphics or title pages in their VHS home videos.

In France they probably used greyscale for title pages :-)

> How would you record from a C64 or Amiga to SECAM VHS, for example?

I can't say for France but outside of there, there were hardly any purely SECAM recorders. I don't remember a single one that would be SECAM but not PAL at the same time. Even those that were SECAM enabled were usually ME-SECAM, which was basically a PAL machine with a kind of slightly modified PAL circuitry that did not reject the signal as not conforming to PAL standard. The disadvantage was that such recordings (non-scientifically-confirmed but possible, subjective impression) were more colour distortion prone. While SECAM broadcast signal was generally good, home recordings using ME-SECAM equipment showed degradation substantially faster than PAL recordings.

SD! -

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Received on 2017-09-01 22:00:02

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