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For motion detection and lookout operation -
Gotcha
3.0.6.9 (single cam version), configured to send the registered video to a
remote location.
For realtime monitoring(audio&video),
streaming
and remote control... my applications.
BR,
Dan
----- Original Message -----
Sent: Tuesday, September 10, 2002 6:44
PM
Subject: RE: [ukha_d] Maximum
USB
I have two webcams and a spare usb hub and would very
much
like
to check out the usb option first. If it works for me then I will
stick to it.
What application are you using ? one that you wrote ?
-----Original Message-----
From: Dan [mailto:dtoma@xxxxxxx]
Sent: Tue 10/09/2002 16:39
To: ukha_d@xxxxxxx
Cc:
Subject: Re: [ukha_d] Maximum USB
I
think
that an analog B/W camera is more expensive than a color USB one, with mic
included.
More than that, the driver of
the
USB cam can do all the adjustments automatically (like sensibility, number
of
frames per second, contrast, etc.). Especially for suveillance, where you
don't need 25 frames/s, decreasing the frame rate to 5 or 3 frames/s can
give
you much better quality al low light (s/n ratio).
Other
dissadvantages of analog cams in surveillance:
- separate power supply (cheaper ones
can
get a lot of power)
- cheaper capture
cards
need a lot o processing power to capture the video
A
very
good surveillance application, cheaper for single cam but much more
expensive
in multicam version is Gotcha! (see http://www.gotchanow.com/ ).
Unfortunately, the multicam version
doesn't
work with standard USB cams.
One of my webcams is connected to the
Gotcha application and accessible on the Media Encoder too, as a Screen
Capture (a small trick..:) ).
Any other opinions?
Dan
----- Original Message -----
From:
Amar
Nagi <mailto:groups@xxxxxxx>
To:
ukha_d@xxxxxxx
Sent: Tuesday, September 10, 2002 6:24 PM
Subject:
RE:
[ukha_d] Maximum USB
I have just thought of a potenial solution
I have a
av
hub with remote control (about 30quid)
I have a tv card which was 15pounds.
I could
control the signal i want to monitor by remotly controlling
the av
hub
via infrared.
All i would need are some budget cameras
(b/w)
and software that is it
i think
anyone see a problem with this ? what
software
could i use
-----Original Message-----
From: Dan [mailto:dtoma@xxxxxxx]
Sent: Tue 10/09/2002 15:55
To: ukha_d@xxxxxxx
Cc:
Subject: Re:
[ukha_d] Maximum USB
First public
version will be a small client with a mediaplayer frame inside and a
listbox
with all the available source at the encoder.
You will be able to remotely select one of
(let's say) 4 USB connected webcams.
The list will
be
loaded at startup with all the available source (can be audio, video or
AV).
In this moment I have 3 USB webcams (with
mic
included) and the AV receiver output connected to a Pinnacle Lynx USB AV
cable
(again with his own mic).
In that way, I can use the system not only
for
surveillance purpose, but even to remotely select one of the home
entertainment system AV sources (vcr, sat, TV, DVD) using Infrared Remote
Manager.
Even when I am abroad, I can see my
favourite
radio/tv program using Windows Media streaming.
Sounds
interesting for you?
BR,
Dan
-----
Original Message -----
From:
Amar
Nagi <mailto:groups@xxxxxxx>
To:
ukha_d@xxxxxxx
Sent:
Tuesday, September 10, 2002 5:45 PM
Subject:
RE: [ukha_d] Maximum USB
sounds
interesting dan
look
forward to seeing it
-----Original Message-----
From: Dan [mailto:dtoma@xxxxxxx]
Sent: Tue 10/09/2002 15:25
To: ukha_d@xxxxxxx
Cc:
Subject: Re: [ukha_d] Maximum USB
Hi,
I make some tests. Theoretical limit is 5m per segment for a maximum
of
5 segments.
Practically, using STP cable I get reliable connection even at 10m. It is
possible to get even more.
You can use the 8 wire like that:
- 4 for the standard usb pins
- 2 for power supply GND
- 2 for +5V for the powered hub.
Take care that it is possible not to be able to use 2 webcams on the same
USB
hub. Usually, one cam request aprox. 75% of the bandwidth.
BR,
Dan
P.S. This is what I use in this moment.
I will post in a couple of days, on my site (http://www.geocities.com/tdanro)
a
small application to select one of the AV source connected to a Windows
Media
Encoder remotely, when not home.
Is very usefull for surveillance purpose.
----- Original Message -----
From: Amar Nagi <mailto:groups@xxxxxxx>
To: ukha_d@xxxxxxx
Sent: Tuesday, September 10, 2002 5:18 PM
Subject: [ukha_d] Maximum USB
What is the maximum length usb lead i can have
between powered hubs. I want
to set up some webcam security.
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