World camera not detected

[amyp...@gmail.com]

Hi All,

Apologies if this has been covered elsewhere or the solution is really easy, but I couldn't find any problems similar to mine elsewhere.

Only the Eye camera is appearing in a window. I get the following error:

WORLD Process [ERROR] uvc_capture : No device found that matched ['Logitech Camera', 'B525', 'C525', 'C615', 'C920', 'C930e']
WORLD Process [ERROR] world : Did not receive valid Capture

I know that my other webcam works (I've tried it in guvcview), but it's called UVC camera (even though it's a logitech C510).

I'm using Pupil 0.3.7 and can't find main.py to change the camera. Is there another way I can change the webcam name or webcam parameters to make the world camera work as well?

Thanks in advance,
Amy

[Moritz Kassner]

Hi Amy,

I think you are using the bundled version correct?. In this case you cannot make the necessary (very trivial) edit.

I have made the necessary change in the source code and re-bundled the package you can get it here: https://github.com/pupil-labs/pupil/releases/tag/v0.3.7.5

Let me know if it works now.

best,

Moritz

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[amyp...@gmail.com]

Hi Moritz,

Many thanks for your quick response to this...I had a go with it on Sunday, but didn't seem to work unfortunately. I now get this:

WORLD Process [ERROR] uvc_capture : No device found that matched ['Logitech Camera', 'UVC camera', 'C510', 'B525', 'C525', 'C615', 'C920', 'C930e']

WORLD Process [ERROR] world : Did not receive valid Capture

my laptop has assigned the name 'UVC camera (046d:081d) to it.

I typed lsusb in the terminal to see what information I could get relating to USB devices, and the World webcam is listed as:

Bus 002 Device 006: ID 045e:076f Microsoft Corp.

When I'm back in Pupil capture, only the Eye camera panel opens. I can switch between different cameras in there, but there is only one single window for Eye and no World.

Hope this helps! Let me know if you need any more information.

Kind regards,
Amy

[Moritz Kassner]

ok.

please download and try again: https://github.com/pupil-labs/pupil/releases/tag/v0.3.7.5

m

[amyp...@gmail.com]

Hey Moritz,

It's soooo nearly there!!! both the cameras work now, but not at the same time. If I have both of them plugged in, then Pupil Capture crashes. If I have the World camera plugged in only, I get this;

E Y E Process [ERROR] uvc_capture : No device found that matched ['Microsoft', '6000', 'Integrated Camera']
E Y E Process [ERROR] eye : Did not receive valid Capture

However, if I have the Eye camera plugged in, I get this...

WORLD Process [ERROR] uvc_capture : No device found that matched ['Logitech Camera', '(046d:081d)', 'C510', 'B525', 'C525', 'C615', 'C920', 'C930e']

WORLD Process [ERROR] world : Did not receive valid Capture

...but I can't have them both plugged in at the same time! :(

I can't figure out how to run Pupil Capture app from the Terminal, otherwise I'd post the code from that to give you a bit more information.

Hope this helps.

Regards,
Amy

[Moritz Kassner]

Hi,

usually this comes from using both cameras on the same usb controller. Have you tired the uvc camera patch and/or different usb ports on your machine?

Have a look at the log files found in the settings dir. But for this error this may not help so much.

best,

Moritz

[amyp...@gmail.com]

Hey Moritz,

Hmm...I've moved the USB connections around several times, and used the UVC patch provided.

Nothing in the log files which can give more info unfortunately.

Amy

[Moritz Kassner]

Could you share what hardware you are using?

m

[amyp...@gmail.com]

Hi Moritz,

Just managed to get a sneeky screen-capture of the Terminal message before it disappeared...

libv4l2:error turning on stream: No space left on device
VIDIOC_STREAMON error 28, no space left on device

I've got the following hardware;
Intel Core i7 CPU Q720 @1.60GHz x 8
3.8GB RAM
Ubuntu 12.04 64-bit

I've partitioned my hard drive so I've assigned 18GB to Ubuntu. The rest is assigned to Windows.

Would welcome any advice you can give :)

[amyp...@gmail.com]

...this is the spec for my laptop btw...
http://www.toshiba.co.uk/discontinued-products/satellite-a660-11m/

[Moritz Kassner]

Yes. I can confirm that this is the standard USB bandwidth problem.

You need to run each camera on a different usb controller. I know this is annoying but little can be done as this problem lies with the cameras.

Often laptops have two controllers. If not you could try adding an extension card...

Hardware wise everything else is fine. 

I m correct assuming you are not running in a virtual environment? (This would be a problem)

I hope this helps.

M

[amyp...@gmail.com]

Hi Moritz,

Ah, ok. Good to know! Thanks. Apologies for that...I assumed my laptop had two separate USB controllers since they're located in different ends (rookie error!).

I'll have to do a bit more reading on virtual environments. I've just installed Ubuntu alongside Windows and I've been choosing which to boot from on startup.

I'll let you know how it all goes anyway if I get hold of another USB controller.

Thanks again for all your help.

Amy

[Moritz Kassner]

Hi Amy,

Don't worry about the virtual environment. If you installed it alongside the other OS all is good.

Try the USB/ESATA combo port if you have not already. If all fails you'll need something like: http://www.amazon.com/J-Tech-Digital-ExpressCard-SuperSpeed-Express/dp/B005STWIQ2/ref=sr_1_1?ie=UTF8&qid=1392895273&sr=8-1&keywords=usb+expresscard

I hope this helps.

m

[amyp...@gmail.com]

Hi Moritz,

tried the Combo connection, but gave the same response.

I'll get hold of the item you recommended. Thanks for suggesting it.

Amy

[amyp...@gmail.com]

Hi Moritz,

Got the card you suggested and it's working! Thanks so much for all your help! I'm having some problems with calibration now though (wherein the circle marker doesn't move), but I'll keep having a play to see if it can get it working.

Thanks again!

Amy

[Moritz Kassner]

Hi Amy,

thats great!

make sure that the world camera sees the marker. It will only move then. When data is collected the marker center will turn green.

m

[abidi.m...@gmail.com]

Hello,

i have a question please.
i have the same problem :

WORLD Process [ERROR] uvc_capture : No device found that matched ['Logitech Camera', 'B525', 'C525', 'C615', 'C920', 'C930e']

WORLD Process [ERROR] world : Did not receive valid Capture

E Y E Process [ERROR] uvc_capture : No device found that matched ['Microsoft', '6000', 'Integrated Camera']
E Y E Process [ERROR] eye : Did not receive valid Capture

if i have "J-Tech Digital 2-Port ExpressCard SuperSpeed USB 3.0", Is it going to solve this problem ?

thank you in advance

[Moritz Kassner]

Hi,

what cameras are you using? Also: You need one usb controller per camera, so the card could be helpful.

Furthermore, please use the latest version of Pupil Capture found here: https://github.com/Pupil-Labs/Pupil/releases

best,

m

[a.fir...@gmail.com]

Hello Moritz, I have a problem with USB bandwidth.
In my case I have to use virtual machine,
I run Ubuntu on VMware, VMware virtual machine just provide one USB Controller, I could see both cameras are connected. I receive "No Space" error.
Since I am using Pupil Pro, I followed instruction of this page:
https://github.com/pupil-labs/pupil/wiki/Linux-UVC-Bandwidth

I run the code as ".sh" file and then run the generated patch file and again nothing happened (same error).
I am probably missing something when I followed the instruction.
any help is appreciated. thanks