I get the issue with the cameracv driver as well as the camerauvc driver, but have been unsuccessful in getting the cameragst driver working.. As far as the camerav4l2 driver is concerned, I wasn't able to get it fully functional as it doesn't insert a default huffman encoding table into the header of the jpeg's but seems to be very similar in nature to the cameraUVC driver, I would imagine that it has the same problem.  I can't tell however because the frames cannot be viewed as jpegs..  Was this driver suppose to return  mjpeg or some other format?
  I have tested it with two logitech cameras, with yours that makes three.  What did you do to work around the problem?
I think that I might start including the V4L2 mailing list on this thread to see if they can't come up with anything.



From: Rich Mattes <jpgr87@gmail.com>
To: playerstage-users@lists.sourceforge.net
Sent: Fri, April 29, 2011 5:36:43 PM
Subject: Re: [Playerstage-users] BEAGLE BOARD Xm logitech camera and orbit flicker

On 4/29/2011 1:00 AM, Rusty Weber wrote:
> There is a really weird flicker problem when using logitech cameras
> with player on the armel OMAP3 beagle board Xm. the problem is os
> independent.  I have seen it on both ubuntu 10.4 as well as angstrom.
> It seems that the ioctrl calls from player drivers are incorrectly
> accessing the mmapped buffers for the v4l2 driver set...  I was
> wondering if any one else has experienced these issues and what was
> done to fix them? Once again, it seems to be an arm problem for the
> beagle board xm with logitech cameras.  I would also like to note that
> the flickering becomes worse as the image resolution increases, which
> further attributes to my incorrect access to buffers theory.  Any
> help or advice that you guys could put out there would be greatly
> appreciated.
>
> I should probably also note that programs like cheese, and ffmpeg from
> the command line also work without a problem.  It's only with player
> on the beagleboard.

Which drivers have you tried?  I experienced the same issue when i used
a QuickCam5000 on a beagle-xm with the camerauvc driver.  However, i
didn't try camerav4l2, camerauvc, or cameragst.  Perhaps one of those
will give you better results?

Rich

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