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Then switch to the Connectors Tab and set the Connector Mapping to SDI X, instead of SDI X & SDI Y for all available inputs.
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In case of the DeckLink 8K Pro, it should look like this (SDI X In or Out):
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Then switch to the Connectors Tab and set the Connector Mapping to SDI X, instead of SDI X & SDI Y for all available inputs.
...
In case of the DeckLink 8K Pro, it should look like this (SDI X In or Out):
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