The Decklink Quad 2 and Duo 2 cards (which are also used in the M|8R) are specific as their connectors can be "mapped" to devices. And depending on the way the card is configured you will have different behaviours in our software. In most situations for our software (except if you want to do keying) you will want to change the default connector mapping.
If you don't change the connector mapping,
- with a Decklink Quad 2, you will have maximum 4 in and 4 out (but not 8 in or 8 out) and
- with a Decklink Duo 2, you will have maximum 2 in and 2 out (but not 4 in or 4 out) and with a Decklink Duo 2.
What is the "Connector Mapping" for ?
The main reason for this option is that Blackmagic-Design wanted to do 2 things:
- have a card with configurable in/out
- have the possibility to do internal and external key (which requires to "group" connectors")
- have the possibility to have a "passthrough" when using an ingest application such as MovieRecorder (so when you start MovieRecorder, the incoming signal is sent to the other connector for monitoring purposes.
- maintain compatibility with the previous versions of Decklink Duo and Quad cards (this is why the card is configured by default with the connectors "grouped")
Where do I change the "Connector Mapping"?
To change the connector mapping, start the application “Blackmagic Desktop Video Utility”, then:
- Use the left and right arrows to select the "Device" you want to configure.
- For a Decklink Duo 2, you will have 4 "devices" named by default "Decklink Duo (1) -> Decklink Duo (4)
- For a Decklink Quad 2, you will have 8 "devices" named by default "Decklink Quad (1) -> Decklink Quad (8)
- Once you have selected the device you want to configure, click on the settings icon:
- At the bottom of the setting page, you will see a section named “Connector Mapping”. By default, for the first device, it should be set to Connector: SDI 1 & SDI 2. This means that the connector number 1 and connector number 2 are "grouped".
- You can change the Connector mapping to "SDI 1" only (for the Decklink Quad (1)).
What is the recommended configuration for Softron ?
In most situations with our software, you will want to change the connector mapping so they are NOT grouped. So for example, for device "Decklink Quad (1), set the connector mapping to "SDI 1", etc... This will allow you to really configure the inputs and outputs the way you want. The only exceptions are:
- if you want to playout using the keying feature of the card. See below for more explanations on this.
- if you want to have a passthrough of the incoming video to the output connector
What happens in both configurations ?
Let's take the example of the device "Decklink Quad (1)" of a Quad card.
Connector Mapping = SDI 1 & 2
If you enable internal keying with our playout applications, the input will be made on the connector SDI 1 and the output on the connector SDI 2
If you enable external keying with our playout applications, the Fill will be made on connector SDI 1 and the Key will be made on connector SDI 2
IMPORTANT NOTE: In that configuration, you won't be able to use the device "Decklink Quad (5)", as that device would otherwise use the connector SDI 2. Indeed, if you configure the devices 1 to 4 to use "grouped" connectors, then the connector mapping will look something like this:
As you can see you can thus have maximum 4 inputs and 4 outputs. Not 8 simultaneous inputs.
Connector Mapping = SDI 1
In that configuration, you won't be able to do keying with our playout applications, but you will be able to use connector SDI 1 and SDI 2 independently. And thus, if you configure the devices 1 to 4 to use "independent" connectors, then the connector mapping will look something like this:
Note that the order of the connectors can be quite confusing...