Tmo,
OK, so made some discoveries. Keep in mind that with two of the Creative Livecam Sync HD, I would get the "out of space" error in logread.
Tried using two, but different cameras both at 640x480, 5 fps. This worked like a charm and I could see both streams, one on port 8080 and one on 8081. I used a Logitech Orbit Sphere MP with the previously discussed Creative Livecam Sync HD.
Since the Logitech Orbit Sphere was basically a spare with a pretty bad picture (one solid white line vertically though the picture, probably dropped it at some point in college), I happily trotted over to Fry's to pickup a different camera, thinking that I had solved the problem and that it was just that you couldn't use two of the exact same camera.
I picked up a little "better" one than the Creative Livecam, the Microsoft HD-3000. With a name like HD-3000, how could you go wrong?
I unplug the Logitech and replace it with the HD-3000. So now on the system I've got the HD-3000 and the Creative Livecam Sync HD, attempting to run them simultaneously, both same 5fps and 640x480 res. Should work right? Wrong. Does NOT work. Same error message as when using two of the same Creative Sync HD Cams simultaneously. One stream will work, but when you attempt to initiate the other stream you get the "out of space" error.
So now I've definitely narrowed the problem down to bandwidth over USB. I know this after Tmo's suggestion of running lvusb -v and checking the dwMinBitRate fields. The reason why the Logitech and the Creative Lifecam work together is this:
Creative Lifecam Sync HD
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 147456000
Logitech Orbit Sphere MP
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 147456000
However when I tried the Creative Lifecam and the newer MS HD-3000 together, you would have this combo:
Creative Lifecam Sync HD
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 147456000
Microsoft HD-3000
wWidth 640
wHeight 480
dwMinBitRate 36864000
dwMaxBitRate 147456000
Which probably exceed the maximum amount of bitrate for the one usb port on my router connected to a USB hub.
If that's the case, what device are you using Tmo that allows to have that much usb traffic for multiple (15???) cameras?
(Last edited by jstromsoe on 2 Jun 2015, 18:47)