[This is preliminary documentation and subject to change.]
The VideoSubchannel property enables you to set or retrieve the subchannel for the video stream of this device.
object.VideoSubchannel [ = lSubChannel ]
 The subchannel values are set in the Stream table of the Guide database.
  Windows NT: Unsupported.
  Windows: Requires Windows 98.
  Windows CE: Unsupported.
  Header: Declared in vidsvr.odl.
  Import Library: Included as a resource in vid.ocx.
  Unicode: Yes.
BPCDeviceBase.AudioSubchannel, BPCDeviceBase.DefaultVideoType