$ gst-launch-0.10 -e v4l2src ! video/x-raw-yuv,  width=720, height=487, framerate=30000/1001, format="(fourcc)"I420, interlaced=false ! ffmpegcolorspace ! x264enc speed-preset=ultrafast tune=zerolatency bitrate=5000 ! matroskamux ! filesink location=test.mkv
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Device '/dev/video0' cannot capture at 720x487
Additional debug info:
gstv4l2object.c(2207): gst_v4l2_object_set_format (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
Tried to capture at 720x487, but device returned size 720x486
Setting pipeline to NULL ...
Freeing pipeline ...



$ gst-launch-0.10 -e v4l2src ! video/x-raw-yuv,  width=720, height=486, framerate=30000/1001, format="(fourcc)"I420, interlaced=false ! ffmpegcolorspace ! x264enc speed-preset=ultrafast tune=zerolatency bitrate=5000 ! matroskamux ! filesink location=test.mkv
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock