From: "Michael A. Terrell"
Subject: Re: Detection of television commercials
Date: Fri, 06 Dec 2002 13:46:18 -0500
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Michael Black wrote:
> "Brendan Lynskey" (email@example.com) writes:
> > I don't know about elsewhere, but here in the UK I sometimes notice a black
> > and white symbol appear in the top right-hand corner for a few seconds
> > before the switch between adverts and programmes.
> > Mind you - not sure that it's ALWAYS there, or even if it's on all of the
> > channels.
> Here in Canada, the CBC does something like that. There's a little white
> block in the upper right corner. I forget the exact sequence, but it
> comes on and flashes a certain way a fixed amount before a commercial,
> and then another sequence that leads into the commercial. They've been
> doing that for some years, and I've never seen anyone mention it.
> It's just on the CBC here. And there is nothing to indicate a return
> to the regular programming.
Sounds like the old "Cue marks" used on 16mm film chains. Three
marks. Five seconds, (Warning, end of reel.) One second, (Start next
projector.) and switch (Switch the optical gate and stop the first
projector.) I used to do it all day long at a TV station. It became
second nature. I could catch them out of the corner of my eye and
switch projectors without even think about it. Then you removed the
reels, rewound the film, loaded the next reel, cued it, and waited.
Michael A. Terrell