Selecting a Video Source
You can select between:
SDI input
Pattern (Internal Pattern Generator)
Note
When selecting the Pattern generator as a source, you can select a specific pattern to be generated. The pattern options are: color circles, color bars, or a black pattern.
You can also select amongst the following standards: 720p50, 720p59.84, 720p60, 1080p25, 1080p29.97, 1080i59.94, 1080i60, 1080p50, 1080p59.94, 1080p60 UHDp25, UHDp29.97, UHDp30, UHDp50, UHDp59.94, and UHDp60.
From the Home screen, tap
and 
.Tap Select Input.
Select the desired source and tap
to confirm your selection.
On the Dashboard, in the Streams section, click the
icon to open the Edit Stream dialog. 
Edit Stream
Select the Video Source in the dropdown list.
Click the Save button.
Note
If you select SDI, the video resolution is automatically detected.
If you select Pattern, go to Streaming > Input/Output to define the shape and the resolution to be used.