68.3.1 Viewer

Viewer

This control allows monitoring a video and related audio input on the Multiviewer and optionally to convert it to an output signal. Its behaviour is defined by its properties:

• Description: allows changing the control description from the default one.

• Position and size: allows positioning and sizing of the control on the layout. The result is visible in the middle part of user interface.

• Input: this section allows selection of video and audio in input to the Multiviewer monitor. Several kind of inputs are available:
- MP stream: a local mp:// stream available on the workstation. Currently available streams are selectable from the drop down list, but a manual input of streams which will be available in the future is also possible.
MPstream
- Network stream: A network stream. Target IP and port can be set in the Udp field, stream parameters can be set in the Parameters field.
NetworkStream
- Video device input: Several kinds of Video sources are available (SDI boards, NDI streams,  webcams and other) from the Video source drop down list. The remaining parameters depend on the selected video source.
VideoDeviceInput
A particular case is that of NDI: selecting an NDI input, both NDI streams mapped to Etere IP router channels (which can be selected choosing the appropriate router channel) and NDI channels available on the network (which can be scanned setting ‘List active NDI streams’ to True) are selectable. Manual input is also possible for NDI stream which will be available in the future. 
In the case of NDI is also possible to define a fault back NDI channel in the Backup NDI section:
BackupNDI
The Backup always on check allows choosing if the fault back stream is active even when not needed (checked) or will be acquired when needed with some time lag (unchecked).
The NDI tally checkbox, when checked, allows sending the information on which NDI stream (main or backup) is current to Etere automation.
In case of NDI input is lost and replaced by the fault back NDI backup stream, the Auto resume main value defines a time interval after which signal returns to the main NDI input. A value of 0 disables this feature.