gst-launch-0.10 gconfvideosrc is-live=true ! queue ! autovideosink malloc: using debugging hooks Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... ERROR: from element /pipeline0/gconfvideosrc0/bin0/v4l2src0: Device '/dev/video0' cannot capture at 1600x1088 Additional debug info: v4l2src_calls.c(1203): gst_v4l2src_set_capture (): /pipeline0/gconfvideosrc0/bin0/v4l2src0: Tried to capture at 1600x1088, but device returned size 1600x1200 ERROR: pipeline doesn't want to preroll. Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... FREEING pipeline ...