WORLD Process [ERROR] video_capture : No accessible device found that matched ['Pupil Cam1 ID2', 'Lo

[Genís Prat Ortega]

Hi

I am a researcher trying to use pupil_capture to do my psychophysics experiment.
When I can not run pupil_capture. This is the error:
WORLD Process [ERROR] video_capture : No accessible device found that matched ['Pupil Cam1 ID2', 'Logitech Camera'

I am using Ubuntu 14.04 LTS.
I have tried to update the library ffmpeg but it doe noit work.
I can not remove the file ‘/opt/pupil_capture/libstdc++.so.6c

Any tips?

Thank you very much in advance

[Pupil Labs Info]

Hi,

what hardware are you using. Error means that no cameras can be found.

Best,

Moritz

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[Genís Prat Ortega]

Dear Moritz,

Thanks for your reply.

My computer is  Intel® Core™ i5-2400 CPU @ 3.10GHz × 4, 64-bits, 16GB RAM
I am using the default cameras (Logitech and Microsoft)

Best,

Genis

El dimarts, 9 febrer de 2016 16:46:48 UTC+1, info va escriure:

[Pupil Labs Info]

did you install the app via the debian package manager?

I might be that the usb permissions are missing: https://github.com/pupil-labs/pyuvc#udev-rules-for-running-as-normal-user

Best,

Moritz

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[Genís Prat Ortega]

Dear Moritz,

Thanks for your quick reply.

Indeed, it is a usb permissions problem. I do not have this problem when I run the pupil as root. However the link that you provide it does not help.
Moreover I have an additional problem with the libraryTurbojpeg when I run as root:

Now I have two problems:

1. I can acces to the usb because of the permisions.
2. When I run as a root I have an error of turbojpeg:
WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: 6 extraneous bytes before marker 0xd4

Thank you ver much in adavance

Genis

El dimecres, 10 febrer de 2016 18:08:55 UTC+1, info va escriure:

[Genís Prat Ortega]

Fear Moritz,

Ia have restarted my computer and the first problem is solved!
Any clue about this error:

WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: 6 extraneous bytes before marker 0xd4

Thanks

Genis

El dijous, 11 febrer de 2016 12:20:40 UTC+1, Genís Prat Ortega va escriure:

[Genís Prat Ortega]

Actually the error is:

WORLD Process [ERROR] uvc : Could not init 'Auto Exposure Mode'!
WORLD Process [ERROR] uvc : Could not init 'Auto Exposure Priority'!
WORLD Process [ERROR] uvc : Could not init 'Absolute Exposure Time'!
WORLD Process [ERROR] uvc : Could not init 'Auto Focus'!
WORLD Process [ERROR] uvc : Could not init 'Absolute Focus'!
WORLD Process [ERROR] uvc : Could not init 'Zoom absolute control'!
WORLD Process [ERROR] uvc : Could not init 'Pan control'!
WORLD Process [ERROR] uvc : Could not init 'Tilt control'!
WORLD Process [ERROR] uvc : Could not init 'Backlight Compensation'!
WORLD Process [ERROR] uvc : Could not init 'Brightness'!
WORLD Process [ERROR] uvc : Could not init 'Contrast'!
WORLD Process [ERROR] uvc : Could not init 'Gain'!
WORLD Process [ERROR] uvc : Could not init 'Power Line frequency'!
WORLD Process [ERROR] uvc : Could not init 'Saturation'!
WORLD Process [ERROR] uvc : Could not init 'Sharpness'!
WORLD Process [ERROR] uvc : Could not init 'White Balance temperature'!
WORLD Process [ERROR] uvc : Could not init 'White Balance temperature,Auto'!

WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: 6 extraneous bytes before marker 0xd4
WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: 6 extraneous bytes before marker 0xd4

....

WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: 6 extraneous bytes before marker 0xd4

Thank you very much in advance


El dijous, 11 febrer de 2016 12:40:03 UTC+1, Genís Prat Ortega va escriure:

[Pupil Labs Info]

Hi often does the urbojpeg jpeg2yuv error occur?

M

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[Genís Prat Ortega]

Dear Moritz,

After the errors: 

WORLD Process [ERROR] uvc : Could not init 'Auto Exposure Mode'!
WORLD Process [ERROR] uvc : Could not init 'Auto Exposure Priority'!
WORLD Process [ERROR] uvc : Could not init 'Absolute Exposure Time'!
WORLD Process [ERROR] uvc : Could not init 'Auto Focus'!
WORLD Process [ERROR] uvc : Could not init 'Absolute Focus'!
WORLD Process [ERROR] uvc : Could not init 'Zoom absolute control'!
WORLD Process [ERROR] uvc : Could not init 'Pan control'!
WORLD Process [ERROR] uvc : Could not init 'Tilt control'!
WORLD Process [ERROR] uvc : Could not init 'Backlight Compensation'!
WORLD Process [ERROR] uvc : Could not init 'Brightness'!
WORLD Process [ERROR] uvc : Could not init 'Contrast'!
WORLD Process [ERROR] uvc : Could not init 'Gain'!
WORLD Process [ERROR] uvc : Could not init 'Power Line frequency'!
WORLD Process [ERROR] uvc : Could not init 'Saturation'!
WORLD Process [ERROR] uvc : Could not init 'Sharpness'!
WORLD Process [ERROR] uvc : Could not init 'White Balance temperature'!
WORLD Process [ERROR] uvc : Could not init 'White Balance temperature,Auto'!

The error 

WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: 6 extraneous bytes before marker 0xd4

appears like 3 or 4 times/ second with different numbers like:

WORLD Process [ERROR] uvc : Turbojpeg jpeg2yuv error: Corrupt JPEG data: X extraneous bytes before marker XxXX

Thank tou very much in advance

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[Pupil Labs Info]

Hi,

This can be two things: 

1) the usb connection is bad

2) we are not allocating enough bandwidth. 

I think you wrote this somewhere but I can find it anymore. What model in the world camera?

Best,

Moritz

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[Genís Prat Ortega]

Dear Moritz,

The cameras are
World camera: Logitech HD Webcam C525
Eyetracker camera: Microdosft Life Cam HD-6000

Thank you very much in advance

Genís

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[Pupil Labs Info]

Hi,

my guess is hardware problems. Can you try a different usb port?

Best,

Moritz

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[Genís Prat Ortega]

Yes I have tried with all the usb ports in my computer. 

The eye camera works perfectly fine in all of them but the world camera not.

Do you think is a hardware problem? how can I test that? 

Thanks

Genis

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[Genís Prat Ortega]

Dear Moritz,

I have install the version pupil-capture 0.6.2 instead of the latest and the problem is solve!

Thanks

Genis

 

[Pupil Labs Info]

Hi Genis,

I will look into this and make sure the next release will have the fix included.

Best,

Moritz

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[evanl...@gmail.com]

Hi Moritz,

I'm also getting this issue using the latest software release and a Logitech HD Webcam C615.

Thanks,

Evan

[Pupil Labs Info]

Hi,

I think this should be fixed now.

please try the latest release v0.7.4

Best,

Moritz

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[Evan Morgan]

Hi Moritz,

I'm still having the same issue with the latest release. It's running for a minute or so and then crashing with the following errors:

WORLD Process [WARNING] uvc : Could not grab frame. Restarting device

Estimated / selected altsetting bandwith : 904 / 944. 

WORLD Process [WARNING] uvc : Could not grab frame. Restarting device

Estimated / selected altsetting bandwith : 904 / 944. 

WORLD Process [ERROR] world : Capture from camera failed. Stopping.

Traceback (most recent call last):

  File "/Users/elm/pupil/pupil_src/capture/main.py", line 143, in <module>

    main()

  File "/Users/elm/pupil/pupil_src/capture/main.py", line 110, in main

    g_pool = Global_Container()

NameError: global name 'Global_Container' is not defined

Any ideas?

Thanks,

Evan

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[Evan Morgan]

Here are the initial warnings when I start capture:

running build_ext

WORLD Process [WARNING] uvc : Could not set Value. 'Absolute Exposure Time' must be read only

WORLD Process [WARNING] uvc : Could not set Value. 'White Balance temperature' must be read only

Estimated / selected altsetting bandwith : 904 / 944. 

[Evan Morgan]

Not sure if this is related, but I got the following errors installing opencv --with-ffmpeg, when I installed the dependencies:

Last 15 lines from /Users/elm/Library/Logs/Homebrew/opencv/02.make:

/usr/local/include/libavutil/pixfmt.h:67:5: note: 'AV_PIX_FMT_YUV422P' declared here

    AV_PIX_FMT_YUV422P,   ///< planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)

    ^

fatal error: too many errors emitted, stopping now [-ferror-limit=]

20 errors generated.

[Pupil Labs Info]

Hi,

please install ffmpeg and opencv without any flags. I have made updates to the wiki in this regard just now and it works on my machine just fine.

Best,

Moritz

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