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Cannot connect to more than 2 of 4 USB webcams simultaneously #61

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Add all 4 cameras to iSpy 
2. Switch on more than 2 cameras - only the first two turn on.
3. Switch one of them off and turn on a different camera - it turns on.  Can 
never use more than one.

What is the expected output? What do you see instead?
I expect to be able to switch them on and see 4 cams.

What version of the product are you using? On what operating system?
I am using iSpy 4.6.6.0 and Windows 7 Ultimate Edition (64-bit) Service Pack 1

Please provide any additional information below.
I am using the software with 4 identical webcams (Microsoft LifeCam HD-3000).  
I am using 15 foot USB extensions where needed.  I have one pair of cameras on 
one unpowered hub and the other pair on another unpowered hub.  Are any of 
these items causing the problem, is it a software setting, or am I missing 
something else?  Your guidance and time is greatly appreciated.  This is an 
absolutely wonderful product.

Original issue reported on code.google.com by rob...@burbankcomputers.com on 20 Nov 2012 at 5:13

GoogleCodeExporter commented 9 years ago 
You will usually only be able to add one USB camera from a particular 
manufacturer. For example if you have 2 logitech USB webcams only one will work 
at a time. This is due to limitations in the drivers provided by the 
manufacturers - it's nothing to do with iSpy (it's the same no matter what 
software you use). There are a few workarounds to this problem:
Use USB cameras from different manufacturers - for example you could use 3 USB 
cameras simultaneously if you use one from Microsoft, one from Logitech and one 
from Targus.
Add your duplicate cameras to other computers and install iSpyServer on those 
computers and access them from iSpy as a JPEG feed.
Some people have had success using multiple duplicate USB cameras by either 
using separate USB Hubs or installing an additional USB controller as an add-in 
card (this is unverified - let us know if it works!)

Original comment by ad...@developerinabox.com on 28 Nov 2012 at 2:34

GoogleCodeExporter commented 9 years ago 
I've got 3 of the same cams, bought together. Two are on a hub, connected to 
the front USB, one is connected at the back (i.e different internal hubs). All 
3 works 100%.

Original comment by peet.gro...@gmail.com on 7 Oct 2014 at 8:31