I think found an issue with the 1.0.1 player.
If the player is launched using OpenGL the command line parameter video-x doesn't work
The following command always ignores the video-x command
vlc dshow:// --dshow-vdev="ATI TV Wonder 600 USB 2.0" --dshow-adev="WDM 2883 Audio" --dshow-size=640x480 --dshow-tuner-channel=3 --dshow-tuner-country=1 --dshow-tuner-input=1 --volume=100 --width=640 --height=480 --video-x=500 --video-y=10 --no-qt-updates-notif --no-video-title-show --qt-display-mode=2 --one-instance --no-qt-system-tray --no-embedded-video --no-video-deco --video-on-top --aspect-ratio=640:480 --autoscale --vout-filter deinterlace --deinterlace-mode blend