Hello,
I've been assigned the task of figuring out a way to grab a frame of
video and make it available for another system to get and put in a web
page. The frame only needs to be updated every ten minutes or so.
This is for Chambers Communications / KEZI-TV (my employer).
Here's what I have in mind so far...
An 'older' computer (266-400 MHz)
Capture card with BrookTree chip.
Debian Linux compiled with Video4Linux turned on.
IP tables set to allow access from only a specific set of IP
addresses.
Image grabbing program (vgrabbj?).
Apache (or something simpler) to serve out the image.
The computer would probably be one retired from regular service
because it won't run Windows (with virus scanner, IE, and 50 "helper"
geegaws) fast enough anymore.
I picked the BrookTree chipset for the capture card because it
appears to be well supported under Linux.
Debian Linux, because that's what I'm familiar with.
The grabber app. is just a wild guess based on its package
description.
I suspect there is something lighter weight for just serving a file
every so often, but I know Apache is capable.
I'd like to set this up to boot from a CD, load Linux and go with no
hard drive at all. This may end up in a mildly difficult place to get
to, so having as few constantly moving parts as possible feels like it
should help reliability. Plus, after a power failure, CD-ROMs don't
need to go through fchk.
I am open to alternatives for all the above. If BSD or some other OS
would be a better choice, let me know (no religious wars please...).
My main goal is to get the job done, with a strong desire for
open-source, and if possible, low cost. About the only thing that
can't be changed is the video source. It is an existing camera that is
used on the air.
For those interested, there may be several of these systems set up.
One for the camera on top of the US Bank building in Eugene, one for a
camera at the Sea Lion Caves in Florence, a camera in Medford, and one
in Klamath Falls. Perhaps others will be added later.
Feel free to contact me either on the list, or regular email.
Thanks.
--
Tony
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