Thu Oct 20, 2016 3:49 pm
Hi,
We have an encoder product that currently supports all Decklink cards and Intensity Pro. I am trying to support the Decklink Duo 2 with 4 HD-SDI inputs. Therefore I use bmdDeckLinkConfigDuplexMode to set the two devices to half duplex mode, and assign a connector to each of the 4 subdevices.
Thereafter, when I read from two subdevices, I have no problem. I have no problem whichever the two subdevices I choose, even if the subdevices are on the same device. So I think the problem is not related to the half duplex mode, nor to the inputs which are all correct.
When I read from three subdevices, and worse with four devices, I regularly receive the flag bmdFrameHasNoInputSource, like every second, and a few black frames. Also the reception of frames shows a lot of jitter. Again, the source has no problem if I only use two subdevices.
Has anyone used the Duo 2 as a 4-input card ? How can I debug the issue ?