Re: MSI StarCam working in vlc only (with poor colors)

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Josef,
white balance temperature and hue controls are being blacklisted in
uvcvideo for all cameras due to a bug in the driver.
A patch fixing the issue was committed recently
(https://lists.berlios.de/pipermail/linux-uvc-devel/2009-December/005396.html)
but I'm not sure when it will be available.
These controls if supported by your camera could help improve the image color.

Best regards,
Paulo

2009/12/10 Jozef Riha <jose1711@xxxxxxxxx>:
> thank you again, paulo, for your off-list help. cam is now working
> nicely with xawtv, guvcview and skype. the colors slightly improved
> during day-light, when artificial light is used they still look bad
> though. i fiddled around with just about all v4l controls but couldn't
> really fix it. i'll run a comparison with windows driver when i have a
> chance.
>
> for others interested: the fix was indeed the quirks mode. i had to
> set it like this:
>
> $ cat /etc/modprobe.d/uvcvideo.conf
> options uvcvideo trace=15 quirks=2
>
> regards all,
>
> joe
>
> On Wed, Dec 9, 2009 at 11:53 PM, Paulo Assis <pj.assis@xxxxxxxxx> wrote:
>> You must reload the driver,
>>
>> rmmod uvcvideo
>> modprobe uvcvideo
>>
>> otherwise the quirks want have any effect.
>>
>> uvcvideo is now mantained in the mercurial repo at linuxtv,
>> installing v4l-dvb will also install uvcvideo, but if you want, just
>> follow the instructions on the wiki to compile, but use:
>>  hg clone http://linuxtv.org/hg/~pinchartl/uvcvideo/
>> so that you get the very latest (testing) uvc code.
>> In any case the quirks should be enough:
>> http://lists.berlios.de/pipermail/linux-uvc-devel/2009-October/005235.html
>>
>> Best regards,
>> Paulo
>>
>> 2009/12/9 Jozef Riha <jose1711@xxxxxxxxx>:
>>> setting quirks to 2 unfortunately did not help. gucview's 1.2.1 output below
>>>
>>> [jose@darkstar ~]$ LC_ALL=C guvcview --verbose
>>> guvcview 1.2.1
>>> unexpected integer value (1) for snd_numsec
>>> Strings must be quoted
>>> video_device: /dev/video0
>>> vid_sleep: 0
>>> cap_meth: 1
>>> resolution: 640 x 480
>>> windowsize: 480 x 700
>>> vert pane: 0
>>> spin behavior: 0
>>> mode: mjpg
>>> fps: 1/25
>>> Display Fps: 0
>>> bpp: 0
>>> hwaccel: 1
>>> avi_format: 0
>>> sound: 1
>>> sound Device: 0
>>> sound samp rate: 0
>>> sound Channels: 0
>>> Sound delay: 0 nanosec
>>> Sound Format: 80
>>> Sound bit Rate: 160 Kbps
>>> Pan Step: 2 degrees
>>> Tilt Step: 2 degrees
>>> Video Filter Flags: 0
>>> image inc: 0
>>> profile(default):/home/jose/default.gpfl
>>> starting portaudio...
>>> language catalog=> dir:/usr/share/locale type:C lang:C cat:guvcview.mo
>>> mjpg: setting format to 1196444237
>>> capture method = 1
>>> video device: /dev/video0
>>> /dev/video0 - device 1
>>> Init. UVC Camera (1b3b:2951) (location: usb-0000:00:1d.1-1)
>>> { pixelformat = 'MJPG', description = 'MJPEG' }
>>> { discrete: width = 640, height = 480 }
>>>        Time interval between frame: 1/30,
>>> { discrete: width = 320, height = 240 }
>>>        Time interval between frame: 1/30,
>>> { discrete: width = 160, height = 120 }
>>>        Time interval between frame: 1/30,
>>> vid:1b3b
>>> pid:2951
>>> driver:uvcvideo
>>> checking format: 1196444237
>>> VIDIOC_S_FORMAT - Unable to set format: Input/output error
>>> Init v4L2 failed !!
>>> Init video returned -2
>>> trying minimum setup ...
>>> capture method = 1
>>> video device: /dev/video0
>>> /dev/video0 - device 1
>>> Init. UVC Camera (1b3b:2951) (location: usb-0000:00:1d.1-1)
>>> { pixelformat = 'MJPG', description = 'MJPEG' }
>>> { discrete: width = 640, height = 480 }
>>>        Time interval between frame: 1/30,
>>> { discrete: width = 320, height = 240 }
>>>        Time interval between frame: 1/30,
>>> { discrete: width = 160, height = 120 }
>>>        Time interval between frame: 1/30,
>>> vid:1b3b
>>> pid:2951
>>> driver:uvcvideo
>>> checking format: 1196444237
>>> VIDIOC_S_FORMAT - Unable to set format: Input/output error
>>> Init v4L2 failed !!
>>> ERROR: Minimum Setup Failed.
>>>  Exiting...
>>> free audio mutex
>>> VIDIOC_REQBUFS - Failed to delete buffers: Invalid argument (errno 22)
>>> closed v4l2 strutures
>>> free controls - vidState
>>> cleaned allocations - 100%
>>> Closing portaudio ...OK
>>> Terminated.
>>>
>>> are you sure with the web-page? i cannot see a relationship between
>>> dvb and uvcvideo. shouldn't i download the most recent driver from
>>> http://linux-uvc.berlios.de/#download ?
>>>
>>> thank you,
>>>
>>> joe
>>>
>>> On Wed, Dec 9, 2009 at 11:20 PM, Paulo Assis <pj.assis@xxxxxxxxx> wrote:
>>>> Hi, could you try the following:
>>>>
>>>> echo 2 > /sys/module/uvcvideo/parameters/quirks
>>>>
>>>> this will set uvcvideo quirks to 2
>>>>
>>>> or you can also try the latest uvcvideo:
>>>> http://www.linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
>>>>
>>>> please if you can, use the latest version for guvcview (1.2.1)  :D
>>>>
>>>> Regards,
>>>> Paulo
>>>>
>>>> 2009/12/9 Jozef Riha <jose1711@xxxxxxxxx>:
>>>>> [jose@darkstar ~]$ LC_ALL=C guvcview --verbose
>>>>> guvcview 1.1.4
>>>>> video_device: /dev/video0
>>>>> vid_sleep: 0
>>>>> cap_meth: 1
>>>>> resolution: 640 x 480
>>>>> windowsize: 480 x 700
>>>>> vert pane: 0
>>>>> spin behavior: 0
>>>>> mode: mjpg
>>>>> fps: 1/25
>>>>> Display Fps: 0
>>>>> bpp: 0
>>>>> hwaccel: 1
>>>>> avi_format: 0
>>>>> sound: 1
>>>>> sound Device: 0
>>>>> sound samp rate: 0
>>>>> sound Channels: 0
>>>>> Sound Block Size: 1 seconds
>>>>> Sound Format: 80
>>>>> Sound bit Rate: 160 Kbps
>>>>> Pan Step: 2 degrees
>>>>> Tilt Step: 2 degrees
>>>>> Video Filter Flags: 0
>>>>> image inc: 0
>>>>> profile(default):/home/jose/default.gpfl
>>>>> starting portaudio...
>>>>> language catalog=> dir:/usr/share/locale type:C lang:C cat:guvcview.mo
>>>>>
>>>>> (guvcview:31380): GLib-GObject-WARNING **: IA__g_object_set_valist:
>>>>> object class `GtkSettings' has no property named `gtk-button-images'
>>>>> mjpg: setting format to 1196444237
>>>>> capture method = 1
>>>>> video device: /dev/video0
>>>>> /dev/video0 - device 1
>>>>> Init. UVC Camera (1b3b:2951) (location: usb-0000:00:1d.1-1)
>>>>> { pixelformat = 'MJPG', description = 'MJPEG' }
>>>>> { discrete: width = 640, height = 480 }
>>>>>        Time interval between frame: 1/30,
>>>>> { discrete: width = 320, height = 240 }
>>>>>        Time interval between frame: 1/30,
>>>>> { discrete: width = 160, height = 120 }
>>>>>        Time interval between frame: 1/30,
>>>>> checking format: 1196444237
>>>>> VIDIOC_S_FORMAT - Unable to set format: Input/output error
>>>>> Init v4L2 failed !!
>>>>> Init video returned -2
>>>>> trying minimum setup ...
>>>>> capture method = 1
>>>>> video device: /dev/video0
>>>>> /dev/video0 - device 1
>>>>> Init. UVC Camera (1b3b:2951) (location: usb-0000:00:1d.1-1)
>>>>> { pixelformat = 'MJPG', description = 'MJPEG' }
>>>>> { discrete: width = 640, height = 480 }
>>>>>        Time interval between frame: 1/30,
>>>>> { discrete: width = 320, height = 240 }
>>>>>        Time interval between frame: 1/30,
>>>>> { discrete: width = 160, height = 120 }
>>>>>        Time interval between frame: 1/30,
>>>>> checking format: 1196444237
>>>>> VIDIOC_S_FORMAT - Unable to set format: Input/output error
>>>>> Init v4L2 failed !!
>>>>> ERROR: Minimum Setup Failed.
>>>>>  Exiting...
>>>>> Terminated.
>>>>>
>>>>>
>>>>> On Wed, Dec 9, 2009 at 10:53 PM, Paulo Assis <pj.assis@xxxxxxxxx> wrote:
>>>>>> Hi,
>>>>>> Could you please try guvcview ( http://guvcview.berlios.de )
>>>>>>
>>>>>> Please post me the output of guvcview --verbose
>>>>>>
>>>>>> Best regards,
>>>>>> Paulo
>>>>>>
>>>>>> 2009/12/9 Jozef Riha <jose1711@xxxxxxxxx>:
>>>>>>> Jozef Riha <jose1711 <at> gmail.com> writes:
>>>>>>>
>>>>>>>>
>>>>>>>> Hello dear ML members,
>>>>>>>>
>>>>>>>> I wonder whether you can help me with the following issue. My webcam
>>>>>>>> MSI StarCam (http://www.aaronpc.cz/produkty/msi-starcam-370i)
>>>>>>>> identified as
>>>>>>>>
>>>>>>>> ...
>>>>>>>
>>>>>>>
>>>>>>> Sorry I forgot to add kernel version. It is 2.6.32, config at
>>>>>>> http://repos.archlinux.org/wsvn/packages/kernel26/repos/core-i686/config
>>>>>>>
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>
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