On Thursday, January 12, 2017 at 10:45:41 AM UTC-5, Steve2Q wrote:
>
> Vince, thanks for that. Now that I think of it, those Chinese cams (and 
> DVRs) were used as bots during a recent DOS attack. The newer ones are 
> supposed to be better, but who knows for sure?
>

steve,

some of this strays a bit off topic, but a few things to consider:

- most cameras are not capable of handling more than one or two clients
- exposing a camera directly to the internet is usually a bad idea
  - it might be phoning home, either intentionally or after being 
compromised
  - it might have security vulnerabilities
  - with a direct connection, you don't have any way of detecting the 
former two items
- the firmware may or may not have all of the capture/processing 
capabilities you want to do
- recent cameras (e.g., 4MP hikvision or dahua) can do some impressive 
motion capture, but you'll be able to do even more (perhaps not real-time) 
on a proper computer

i find it better to use a computer somewhere on the network to capture 
images from the camera and do any image processing or timelapse creation

then put the images (raw and/or processed) and videos onto a server that 
can serve them

if necessary, make locked-down access to the 'live video' capabilities of 
the camera.  do this with a reverse proxy or port mapping

this also makes it easier to manage retention policies for the images and 
videos

it also makes it possible to hive off unique/memorable images and videos 
without disrupting the normal access

there are lots of systems that can do this, or you can roll your own.  here 
is one example - look at the images and timelapse:

http://sailing.mit.edu/weather

and you can see the image and video histories here:

http://sailing.mit.edu/eyesee

the 'eyesee' package is a couple of perl scripts that do the image capture 
and timelapse creation, and some really simply html and javascript to 
display the histories.  the perl uses imagemagick and ffmpeg.

m

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