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Comment by melling | Hacker News Reader

Why is surveillance video not HD? Shouldn't this quality be almost a commodity by now? How different are these cameras than what you get in, say the latest Samsung Galaxy S4, for example:

http://en.wikipedia.org/wiki/Samsung_Galaxy_S4

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Probably because the cost of surveillance cameras is more than just the cost of the resolution or storage. the ones that hang outside need to be weather proof and vandalism proof. they were probably bought as part of a large and expensive system, intended to be paid off over 10-15 years[0], to replace all those cameras whenever more resolution becomes available, is probably quite expensive, regardless of how cheap the actual camera is. It's a lot of cameras, in a lot of hard-to-reach places, with expensive reinforced casings, and would the output format of the cameras be compatible with the old system?

OTOH, I do actually see more and more HD (or relatively high def) surveillance footage. It all depends on how when the security system was installed, I guess. Also smaller businesses can afford a shorter turnaround for these things, as well as not having the handicap of a head-start[1].

[0] actually I'm guessing those lifetime spans, it seems a bit much? but I also can't see anyone signing off on a security system that's expected to be replaced in 5 years. good thing my job isn't facility management ... :P

[1] http://en.wikipedia.org/wiki/Law_of_the_handicap_of_a_head_s... , how odd, is there no common English phrase for this law?

In business terminology, a common English phrase would be "first-mover disadvantage".

Its not only about the cameras. Its currently expensive to store all that HD video. ( and now, one cant just upload it to the cloud. Necessary bandwidth isn't yet available locally ).

One are also dealing with a lot of legacy systems her. But the next generation surveillance system will probably be HD, and then maybe 3D, 4k, 16k etc.

Surveillance cameras are typically bought and then forgotten. So the new ones are probably HD, but you get a collection of cameras between HD and Betamax if you look at the cameras that are actually in use.

And for outdoor cameras, how often do the lenses get cleaned? I'd think that in a city center, with lots of car exhaust, etc. they'd be pretty dusty/greasy in just a few months. HD won't help much if there's a film of diesel exhaust soot on the lens.

with so many distributed cameras, why not use them to make a composite, hi-def image, like we do with radio telescopes?

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