hi All, I check the media type that V4l2src supports with gst-inspect and it shows it can support pads: image/jpeg while when I try that gst-launch v4l2src ! image/jpeg width=640,height=480,bpp=24,depth=24,framerate=15/1 ! jpegdec ! xvimagesink it shows: Error : from element pipeline0/v2l2src0: could not negotiate format ..... check your filtered caps, I don't know the reason, Any tips will be appreciated! thanks in advance! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/gstreamer-embedded/attachments/20090305/b2fb6877/attachment.htm>