gst-launch-1.0 -v v4l2src device=/dev/video1 ! image/jpeg,width=1280,height=720 ! decodebin !  queue leaky=downstream max-size-buffers=1 !  videoscale add-borders=1 ! video/x-raw,width=1280,height=720,pixel-aspect-ratio=\(fraction\)1/1 ! videoscale ! video/x-raw,width=720,height=480,pixel-aspect-ratio=\(fraction\)32/27 ! videorate ! video/x-raw,framerate=\(fraction\)30000/1001 ! videoconvert ! video/x-raw,format=\(string\)Y41B !  queue leaky=downstream max-size-buffers=1 !  videoconvert ! avenc_dvvideo ! avmux_dv name=dvmux ! dvswitchsink host=10.0.0.1 port=2000  audiotestsrc is-live=true wave=sine freq=200 ! audio/x-raw,channels=2,rate=48000,depth=16 ! queue ! dvmux.