CTS System - Device names and numbers

TelePresence systems contains different components in the system board to process Video signals, when you go through the logs you will find reference to them, here is the device name and number used:

Video Encoder
Device 0 - Main Camera
Device 2 - PC Video Input (VGA)
Device 4 - Document Camera

At any time only one either Device 2 or Device 4 are active, never both.

Video Decoder
Device 1 - Plasma
Device 3 - Projector Display

Scope ID 15: Primary Video Encoder
Scope ID 16: Primary Video Decoder

Thanks to Shankar  for sharing this