|
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 -----
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.
http://www.automatedhome.co.uk
Post
message: ukha_d@xxxxxxx
Subscribe: ukha_d-subscribe@xxxxxxx
Unsubscribe: ukha_d-unsubscribe@xxxxxxx
List
owner: ukha_d-owner@xxxxxxx
List of
UKHA Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/
Your use
of
Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/>
.
Yahoo!
Groups Sponsor
ADVERTISEMENT
<http://rd.yahoo.com/M=233351.2287381.3722242.2225242/D=egroupweb/S=1705041992:HM/A=1213956/R=0/*http://www.gotomypc.com/u/tr/yh/grp/300_Cquo1/g22lp?Target=mm/g22lp.tmpl>
http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:
ukha_d-subscribe@xxxxxxx
Unsubscribe: ukha_d-unsubscribe@xxxxxxx
List owner: ukha_d-owner@xxxxxxx
List of UKHA
Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/
Your use of
Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/>
.
http://www.automatedhome.co.uk
Post
message: ukha_d@xxxxxxx
Subscribe:
ukha_d-subscribe@xxxxxxx
Unsubscribe:
ukha_d-unsubscribe@xxxxxxx
List owner: ukha_d-owner@xxxxxxx
List of
UKHA
Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/
Your use
of
Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/>
.
Yahoo! Groups Sponsor
ADVERTISEMENT
<http://rd.yahoo.com/M=233351.2287381.3722242.2225242/D=egroupweb/S=1705041992:HM/A=1212977/R=0/*http://www.gotomypc.com/u/tr/yh/grp/300_textG/g22lp?Target=mm/g22lp.tmpl>
http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:
ukha_d-subscribe@xxxxxxx
Unsubscribe: ukha_d-unsubscribe@xxxxxxx
List owner:
ukha_d-owner@xxxxxxx
List of UKHA Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/
Your
use
of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/>
.
http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:
ukha_d-subscribe@xxxxxxx
Unsubscribe:
ukha_d-unsubscribe@xxxxxxx
List owner:
ukha_d-owner@xxxxxxx
List of UKHA Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
| Yahoo! Groups
Sponsor |
ADVERTISEMENT
;) |
|
http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe: ukha_d-subscribe@xxxxxxx
Unsubscribe: ukha_d-unsubscribe@xxxxxxx
List owner: ukha_d-owner@xxxxxxx
List of UKHA Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
|