Webcam doesn't work

[Silent-Hunter]

Am I missing something else? All I get is this:

python2 qtqr.py

QPixmap::scaled: Pixmap is a null pixmap
WARNING: no compatible input to output format
...trying again with output disabled
Traceback (most recent call last):
  File "qtqr.py", line 709, in decodeWebcam
    qr.decode_webcam(device=device)
  File "/home/silent/.qr-tools/qrtools.py", line 209, in decode_webcam
    proc.init(device)
zbar.UnsupportedError: ERROR: zbar processor in zbar_processor_init():
    unsupported request: no compatible image format

[Ramiro Algozino (algozino)]

Not really sure, first time I see that error. Is your webcam detected
properly?
El ago 9, 2014 10:30 p.m., "Silent-Hunter" <email address hidden>
escribió:

> Public bug reported:
>
> Am I missing something else? All I get is this:
>
> python2 qtqr.py
>
> QPixmap::scaled: Pixmap is a null pixmap
> WARNING: no compatible input to output format
> ...trying again with output disabled
> Traceback (most recent call last):
> File "qtqr.py", line 709, in decodeWebcam
> qr.decode_webcam(device=device)
> File "/home/silent/.qr-tools/qrtools.py", line 209, in decode_webcam
> proc.init(device)
> zbar.UnsupportedError: ERROR: zbar processor in zbar_processor_init():
> unsupported request: no compatible image format
>
> ** Affects: qr-tools
> Importance: Undecided
> Status: New
>
> --
> You received this bug notification because you are a member of QR Tools
> Team, which is subscribed to QR Tools.
> https://bugs.launchpad.net/bugs/1354764
>
> Title:
> Webcam doesn't work
>
> Status in QR Tools:
> New
>
> Bug description:
> Am I missing something else? All I get is this:
>
> python2 qtqr.py
>
> QPixmap::scaled: Pixmap is a null pixmap
> WARNING: no compatible input to output format
> ...trying again with output disabled
> Traceback (most recent call last):
> File "qtqr.py", line 709, in decodeWebcam
> qr.decode_webcam(device=device)
> File "/home/silent/.qr-tools/qrtools.py", line 209, in decode_webcam
> proc.init(device)
> zbar.UnsupportedError: ERROR: zbar processor in zbar_processor_init():
> unsupported request: no compatible image format
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qr-tools/+bug/1354764/+subscriptions
>

[Silent-Hunter (silenthunter-vanguard)]

Yeah, the webcam works fine in all other applications. And it's detected fine by qtqr as well. It just doesn't work. I select the camera, and click OK, and it does this.

[Ramiro Algozino (algozino)]

Do you happen to have a Logitech QuickCam?? Seems to be a known bug for
ZBar, the library we are using to decode using the webcam.

Could you check using zbar directly if it works, please?

Thanks in advance.

2014-08-09 23:25 GMT-03:00 Silent-Hunter <email address hidden>:

> Yeah, the webcam works fine in all other applications. And it's detected
> fine by qtqr as well. It just doesn't work. I select the camera, and
> click OK, and it does this.
>
> --
> You received this bug notification because you are a member of QR Tools
> Team, which is subscribed to QR Tools.
> https://bugs.launchpad.net/bugs/1354764
>
> Title:
> Webcam doesn't work
>
> Status in QR Tools:
> New
>
> Bug description:
> Am I missing something else? All I get is this:
>
> python2 qtqr.py
>
> QPixmap::scaled: Pixmap is a null pixmap
> WARNING: no compatible input to output format
> ...trying again with output disabled
> Traceback (most recent call last):
> File "qtqr.py", line 709, in decodeWebcam
> qr.decode_webcam(device=device)
> File "/home/silent/.qr-tools/qrtools.py", line 209, in decode_webcam
> proc.init(device)
> zbar.UnsupportedError: ERROR: zbar processor in zbar_processor_init():
> unsupported request: no compatible image format
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qr-tools/+bug/1354764/+subscriptions
>

--
Ramiro Algozino
http://algozino.com.ar/ <http://ramiroalgozino.com.ar/>

[Silent-Hunter (silenthunter-vanguard)]

No, it's a '123 BisonCam NB Pro'. That's what it shows up as in qtqr anyway.

zbar does this:

zbarcam /dev/video0
WARNING: no compatible input to output format
...trying again with output disabled
ERROR: zbar processor in zbar_processor_init():
    unsupported request: no compatible image format

[Silent-Hunter (silenthunter-vanguard)]

It does the same thing with an external webcam.

[Ramiro Algozino (algozino)]

I'm sorry, it a compatibility issue of zbar. You should probably report the
problem to them, I can't help.

2014-08-10 13:28 GMT-03:00 Silent-Hunter <email address hidden>:

> It does the same thing with an external webcam.
>
> --
> You received this bug notification because you are a member of QR Tools
> Team, which is subscribed to QR Tools.
> https://bugs.launchpad.net/bugs/1354764
>
> Title:
> Webcam doesn't work
>
> Status in QR Tools:
> New
>
> Bug description:
> Am I missing something else? All I get is this:
>
> python2 qtqr.py
>
> QPixmap::scaled: Pixmap is a null pixmap
> WARNING: no compatible input to output format
> ...trying again with output disabled
> Traceback (most recent call last):
> File "qtqr.py", line 709, in decodeWebcam
> qr.decode_webcam(device=device)
> File "/home/silent/.qr-tools/qrtools.py", line 209, in decode_webcam
> proc.init(device)
> zbar.UnsupportedError: ERROR: zbar processor in zbar_processor_init():
> unsupported request: no compatible image format
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qr-tools/+bug/1354764/+subscriptions
>

--
Ramiro Algozino
http://algozino.com.ar/ <http://ramiroalgozino.com.ar/>

[Silent-Hunter (silenthunter-vanguard)]

OK thanks!