Decklink Duo 2 FPS when input/output at the same time
We are exploring the possibility of using the Blackmagic Decklink Duo 2 PCIe cards to add additional I/O to Millumin. We have had great success with using them as inputs; however, using them as outputs poses an issue. All I/O references are firstname.lastname@example.org
I have consistently observed an issue where the FPS of the outputs drop as low as 15fps when using multiple outputs from a single DeckLink Duo 2 card.
- With a single input and output live on the same card the output drops to 30fps.
- >1 input and only one output drops the output to 15-20fps.
- One output with no inputs results in an output at 60fps.
- 4 inputs and no (decklink) outputs results in 60fps (when using DVI out, for example).
Is this a Millumin issue or a Blackmagic issue? Are there any known solutions?