<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Stefan, Thanks for the help.  I was able to get things working by loading gst-plugin-jpeg.  I did an opkg update and searched the /var/lib/opkg/gstreamer package listing for jpeg and found the package. I guess I still don't quite understand how linux software modules and packages are put together.  That will come with time, I hope. Now, I need to speed up the camera throughput, figure out how to get rid of all the o/s overhead, and get my application to run as efficiently as possible. John ----- Original Message ----- From: "Stefan Kost" <ensonic@hora-obscura.de> To: "Discussion of the development of GStreamer" <gstreamer-devel@lists.sourceforge.net> Sent: Tuesday, November 3, 2009 12:34:05 PM GMT -05:00 US/Canada Eastern Subject: Re: [gst-devel] v4l2src0: Could not negotiate format John Buckley schrieb: > Hello, > I've been trying to get an approved USB webcam (Creative Optia AF) to run > using GStreamer and sending the output to an  XWindow and I keep getting > failures. > > I have the uvcvideo module loaded and /dev/video0 is present. > > I am running openembedded on the Gumstix Verdex Pro XL6P.  Could it be that > the camera is USB 2.0 and the Verdex Pro is only rated for USB 1.1? > > This is what I see when I plug the camera in... > > root@gumstix-custom-verdex:~# usb 1-2: new full speed USB device using > pxa27x-ohci and address 4 > usb 1-2: configuration #1 chosen from 1 choice > uvcvideo: Found UVC 1.00 device VF0560 Live! Cam Optia AF (041e:406d) > input: VF0560 Live! Cam Optia AF as > /devices/platform/pxa27x-ohci/usb1/1-2/1-2:1.0/input/input3 > 4:3:1: cannot get freq at ep 0x84 > > When I try to gst-launch with the v4lsrc or v4l2src elements and I get the > error below.  I have tried a variety of settings using the 'video/x-raw-rgb' > cap but I always get the same error.  The videotestsrc element works fine > with ximagesink. > > root@gumstix-custom-verdex:~# gst-launch v4l2src ! ximagesink > Setting pipeline to PAUSED ... > ERROR: Pipeline doesn't want to pause. > ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not > negotiate format > Additional debug info: > gstbasesrc.c(2584): gst_base_src_start (): > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > Check your filtered caps, if any > Setting pipeline to NULL ... > Freeing pipeline ... > root@gumstix-custom-verdex:~# > > Any help would be greatly appreciated... > Thanks, > John Buckley > >   can you run v4l-info and post the output. Or look at the log of GST_DEBUG=v4l2src:4. Or just try gst-launch v4l2src ! decodebin2 ! xvimagesink Stefan ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ gstreamer-devel mailing list gstreamer-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gstreamer-devel </div></body></html>