Values:
INPUT_SWITCH_MODE_UNSPECIFIED (0):
The input switch mode is not specified.
FAILOVER_PREFER_PRIMARY (1):
Automatic failover is enabled. The primary input stream is
always preferred over its backup input streams configured
using the
AutomaticFailover
field.
MANUAL (3):
Automatic failover is disabled. You must use the
inputSwitch
event to switch the active input source for the channel to
stream from. When this mode is chosen, the
AutomaticFailover
field is ignored.