From: Andrew Burgess <aab@ci...> - 2011-05-29 15:44:18
On 05/29/2011 01:27:25 AM, Tom Sparks wrote:
> I debating my options to use a IP camera or a custom setup
> the camera is going to put in a place where there is no mains power
> file copying well be done via sneakernet when in wifi range
> Here is my wish-list for a IP camera
> * Can be battery powered
> * Full-HD (1080p)
> * Internal Hard drive
> * Wifi b/g
> current concept setup
> gadgetPC like system  5 volts
> usb Full-HD webcam
> usb wifi device
> usb hard drive (I have)
> enclosed in a Torch/Flashlight 
>  http://www.bipom.com/products/us/2899678.html
some random thoughts:
i'd worry that a 60Mhz cpu will have trouble with hd video.
my beagle board (600Mhz i think) took more than 50%
of the cpu running motion. i think motion will pull
frames as fast as it can so detecting motion should work
at a reduced frame rate, not sure how much reduced.
also you probably wont be able to transcode the video (tends to take
alot of cpu)
so hopefully the camera can be coaxed to send the exact format you need.
it'll be an impressive project to see how much performance
you can squeeze out of it :-)
PS i just reread the spec, the usb ports are 12Mbit. hd webcams reserve
60% of the bandwidth of a 480Mbit high speed port.
just not enough muscle here i'm afraid...
maybe you can capture full hd at a just few frames per second
perhaps pulling jpeg images from the camera rather than streaming video?
maybe consider a beagleboard for an additional $50? it has a
camera interface built in and 10x the cpu and ram.
From: Tom Sparks <tom_a_sparks@ya...> - 2011-05-29 22:19:48
--- On Mon, 30/5/11, Andrew Burgess <aab@...> wrote:
> On 05/29/2011 01:27:25 AM, Tom Sparks
> some random thoughts:
> also you probably wont be able to transcode the video
> (tends to take
> alot of cpu)
> so hopefully the camera can be coaxed to send the exact
> format you need.
if i do transcoding i'll use ionice -c3
> maybe consider a beagleboard for an additional $50? it has
> camera interface built in and 10x the cpu and ram.
i've talked to BiPOM Electronics they say they are making a faster version of the gadgetPC
these BeagleBoard look interesting......