From Newsgroup: uk.tech.broadcast

I just watched one of the clips of a hole swallowing two videos - https://www.youtube.com/watch?v=S_1j1vbzI38 (I question whether it's a
sinkhole in the usual sense, but ignore that). It says it's a traffic
camera. At first I thought it was a monochrome camera, but no - look at
the yellow line, for example.
So, I wondered: what has happened to its colour? If it truly is a
traffic camera (which seems likely), I presume it's been pointing at the
same scene, possibly for years - but it doesn't seem to have "burn-in",
as you used to get with tube cameras.
(The car - as opposed to the pickup truck - is most definitely red, if
you view some of the other clips of the same event.)
--
J. P. Gilliver. UMRA: 1960/<1985 MB++G()ALIS-Ch++(p)Ar++T+H+Sh0!:`)DNAf
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From Newsgroup: uk.tech.broadcast

On Fri 27/02/2026 16:35, J. P. Gilliver wrote:

I just watched one of the clips of a hole swallowing two videos - https://www.youtube.com/watch?v=S_1j1vbzI38 (I question whether it's a sinkhole in the usual sense, but ignore that). It says it's a traffic
camera. At first I thought it was a monochrome camera, but no - look at
the yellow line, for example.

So, I wondered: what has happened to its colour? If it truly is a
traffic camera (which seems likely), I presume it's been pointing at the
same scene, possibly for years - but it doesn't seem to have "burn-in",
as you used to get with tube cameras.

(The car - as opposed to the pickup truck - is most definitely red, if
you view some of the other clips of the same event.)

Poor translation from NTSC to PAL?
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From Newsgroup: uk.tech.broadcast

On 2026/2/27 17:12:13, Woody wrote:

On Fri 27/02/2026 16:35, J. P. Gilliver wrote:

I just watched one of the clips of a hole swallowing two videos -
https://www.youtube.com/watch?v=S_1j1vbzI38 (I question whether it's a
sinkhole in the usual sense, but ignore that). It says it's a traffic
camera. At first I thought it was a monochrome camera, but no - look at
the yellow line, for example.

So, I wondered: what has happened to its colour? If it truly is a
traffic camera (which seems likely), I presume it's been pointing at the
same scene, possibly for years - but it doesn't seem to have "burn-in",
as you used to get with tube cameras.

(The car - as opposed to the pickup truck - is most definitely red, if
you view some of the other clips of the same event.)

Poor translation from NTSC to PAL?

I guess that's a possibility, though it doesn't _look_ like that effect
I've seen elsewhere.

I suppose a traffic camera _could_ still be NTSC; I'd assume these days
some other encoding would be used.
--
J. P. Gilliver. UMRA: 1960/<1985 MB++G()ALIS-Ch++(p)Ar++T+H+Sh0!:`)DNAf

Once a mind is opened it is very hard to shut.
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From Newsgroup: uk.tech.broadcast

On 28/02/2026 08:24, J. P. Gilliver wrote:

I suppose a traffic camera_could_ still be NTSC; I'd assume these days
some other encoding would be used.

That seems very unlikely unless a whole system was installed using
American equipment.



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From Newsgroup: uk.tech.broadcast

JMB99 <mb@nospam.net> wrote:

On 28/02/2026 08:24, J. P. Gilliver wrote:

I suppose a traffic camera_could_ still be NTSC; I'd assume these days
some other encoding would be used.

That seems very unlikely unless a whole system was installed using
American equipment.

It's in America, so...

I think the chroma is at higher frequencies, so if it was a composite video camera connected via a grotty bit of coax could the upper frequencies be attenuated enough to lose much of the colour?

Theo
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From Newsgroup: uk.tech.broadcast

On 2026/3/1 11:36:55, Theo wrote:

JMB99 <mb@nospam.net> wrote:

On 28/02/2026 08:24, J. P. Gilliver wrote:

I suppose a traffic camera_could_ still be NTSC; I'd assume these days
some other encoding would be used.

That seems very unlikely unless a whole system was installed using
American equipment.

It's in America, so...

I think the chroma is at higher frequencies, so if it was a composite video camera connected via a grotty bit of coax could the upper frequencies be attenuated enough to lose much of the colour?

Theo

Possibly. But usually, in the past, when the chroma connection is dodgy,
I've been used to coloured noise cutting in and out. This one seemed to
just be attenuated but steadily, but letting certain elements through
steadily, such as the yellow line painted on the road, or vehicle
brake/tail lights (which definitely appeared red).
--
J. P. Gilliver. UMRA: 1960/<1985 MB++G()ALIS-Ch++(p)Ar++T+H+Sh0!:`)DNAf

Religion often uses faith as a blindfold, saying anyone who doesn't
believe the same as us must be wiped out. It's not God saying that.
It's people, which is so dangerous. - Jenny Agutter, RT 2015/1/17-23
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