Slow capture card startup

I am using the DeckLink Duo 2, and have downloaded and am using the latest SDK. I saw that in the SDK there was an example project known as CaptureStills, which seemed to be able to get me a picture off of one of the inputs. However, when i run that application it can take 1-2 seconds in order for the card to respond with an image using this project. I do notice that if I ask for more than one frame from the application, that it will capture the subsequent pictures quite quickly. Is there a setting on the card, or a way to always keep it "ready" so that if I ask for a capture, it responds as fast as these subsequent requests appear to capture?

Thanks in advance.

[Cameron Nichols]

Hi Jeremy,

When the DeckLink Duo 2 and Quad 2 cards are configured with half-duplex profile (ie each connector can be configured as either input or output), there will be a short delay from when IDeckLinkInput::EnableVideoInput is called to when the device locks to the incoming signal.

In addition, if you are using auto-mode detection, rather than specifying the input mode, then there will be a small delay of 1-2 frames.

You can minimize the delay of the captured frame by calling EnableVideoInput in advance and ignore incoming frames until capture is required - perhaps by adding a getchar() to initiate capture.

Regards
Cameron