Display modes
Show all screen sizes
If enabled, display modes for all screen sizes will be available to choose.
Show all frame rates
If enabled, display modes for all frame rates will be available to choose.
Snapshot
These options are used when the image is rendered as snapshot.
Background
If enabled, the background will be drawn in the image composition.
Video
If enabled, the video will be drawn in the image composition.
Overlays
If enabled, overlays will be drawn in the image composition.
Keying
Use external keying
If enabled, external keying will be used, if the card supports it.
Otherwise, internal keying is used.
Please notice that Internal keying, external keying, and HD keying are not available in all Blackmagic cards.