[AG-TECH] Problems using webcam?

[Todd Zimmerman]

Is the pwcx module installed properly?  You'll need that module to get 
the resolution that Vic is looking for.

Todd




Michael Miller wrote:
> Todd, Doug,
> 
> So I finally got the Fedora 2 kernel upgraded and the pwc module is 
> loaded.  I went and got Doug's updated vic from the tar file and put it 
> in /home/mimiller/.AccessGrid/local_services/VideoProducerService
> 
> I moved the old one out of the way of course.
> 
> However, I still get the green screen from the QuickCam.  Did I put the 
> new vic in the wrong place?
> 
> Michael Miller
> NCSA
> 
> At 12:04 PM 7/30/2004, Todd Zimmerman wrote:
> 
>> Hi Michael,
>>
>> There were a couple of issues I had.
>>
>> The drivers are available at:
>>
>> http://www.smcc.demon.nl/webcam/release.html
>>
>> There are two parts of the driver.
>> pwc: an open source driver that gives you basic functionality for the 
>> webcam
>>
>> pwcx: a binary closed source driver that gives you more resolutions 
>> and better functionality.
>>
>> The original release of Fedora Core 2 disabled the pwc driver in the 
>> kernel for some reason - but the newest kernel for FC2 has re-inserted 
>> the pwc module.  So, if you have an updated (including kernel) of FC2 
>> (I'm currently using 2.6.6-1.435.2.3) then you should be able to 
>> modprobe pwc and it should just work.
>>
>>
>> As far as pwcx, the instructions in the tar.gz download explain how to 
>> recompile your kernel modules and insert the pwcx module.  I just 
>> ended up recompiling my kernel adding the PWCX module support and now 
>> with the new vic from Doug, all seems good.
>>
>> There is a pwcx rpm out there... but it didn't seem to work for me.
>>
>> If you need any other help, email and I may have run across the same 
>> issue.
>>
>>
>> Good Luck!
>>
>>
>> Todd
>>
>> Collaboration & Visualization Technician
>> WestGrid - www.westgrid.ca
>> IRMACS - www.irmacs.com
>> Ph. 604.268.6979
>> Todd Zimmerman - toddz at sfu.ca
>>
>>
>>
>> Michael Miller wrote:
>>
>>> Todd,
>>> I'm interested in getting the QC Pro 4000 working on FC 2.  Can you 
>>> point me to drivers and other needs to get this to work?
>>> Michael Miller
>>> NCSA
>>> At 12:51 PM 7/29/2004, you wrote:
>>>
>>>> I'm having a similar issue using a Logitech Pro 4000 on FC 2.  The 
>>>> Logitech drivers are slightly different in that you have to install 
>>>> the standard pwc module plus the pwcx binary kernel module to get 
>>>> some of the larger resolution capabilities - but I'm still getting 
>>>> the 'green' output.
>>>>
>>>> The camera works using xawtv and gnomemeeting - so I assume Vic is 
>>>> asking for a resolution that the driver is not capable of 
>>>> delivering. Any vic and/or webcam experts in the crowd??
>>>>
>>>> Todd
>>>> -- 
>>>> Collaboration & Visualization Technician
>>>> WestGrid - www.westgrid.ca
>>>> IRMACS - www.irmacs.com
>>>> Ph. 604.268.6979
>>>> Todd Zimmerman - toddz at sfu.ca
>>>>
>>>>
>>>>
>>>> Benjamin Khoo wrote:
>>>>
>>>>> hi
>>>>> i recently got a V4L supported webcam hoping to be able to get it to
>>>>> work under Linux with AG.
>>>>> i managed to setup the VideoProducer to obtain the device of the 
>>>>> webcam
>>>>> under /dev/video0
>>>>> however, i keep getting a blank Green screen for my own video feed.
>>>>> investigation for the error messages shows the following errors..
>>>>> is there anything i can do to limit the dimensions of the video?
>>>>> my webcam can support up to a max of 640x480, it is a Aiptek model 
>>>>> using
>>>>> the ov511 drivers. i use FC2.
>>>>> thanks lots for anyone's help in advance.
>>>>> 14:59:32 kernel: drivers/usb/media/ov511.c: VIDIOCMCAPTURE: requested
>>>>> dimensions too big
>>>>> 15:20:54 kernel: drivers/usb/media/ov511.c: VIDIOCMCAPTURE: requested
>>>>> dimensions too big
>>>>> 15:22:25 kernel: drivers/usb/media/ov511.c: VIDIOCMCAPTURE: requested
>>>>> dimensions too big
>>>
>>> Thanx,
>>> Michael Miller
>>> System Engineer
>>> Visualization Technology Support
>>> Computing and Data Management
>>> National Center for Supercomputing Applications
>>> University of Illinois - UC
>>> 217-649-0747
>>> "If you're clear in your vision and trust the people in your team 
>>> with clear objectives, they will invariably do their best to achieve 
>>> everything desired, and usually deliver everything you could have 
>>> hoped for and even more." -Paul Debevec
> 
> 
> Thanx,
> 
> Michael Miller
> System Engineer
> Visualization Technology Support
> Computing and Data Management
> National Center for Supercomputing Applications
> University of Illinois - UC
> 217-649-0747
> 
> "If you're clear in your vision and trust the people in your team with 
> clear objectives, they will invariably do their best to achieve 
> everything desired, and usually deliver everything you could have hoped 
> for and even more." -Paul Debevec