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lu-zero / bmdtools

Basic capture and play programs for Blackmagic Design Decklink
Boost Software License 1.0
198 stars 74 forks source link

Multiple Concurrent Captures on Decklink Duo 2 fail on some interfaces #88

Closed PreDeToR closed 7 years ago

PreDeToR commented 7 years ago

Hi Guys

I have 2 "Decklink Duo 2" cards, which should allow me to capture 8 SDI streams at a time, yet for some of the capture interfaces I keep getting "Failed to enable video input. Is another application using the card?"

/root/bmdtools/bmdcapture -C 5 -m 1 -A 2 -V 4 -M 4 -F nut -d 1 -v -f pipe:1 -- Works Fine /root/bmdtools/bmdcapture -C 1 -m 1 -A 2 -V 4 -M 4 -F nut -d 1 -v -f pipe:1 -- Returns above error.

Is there anything I need to do/enable to be able to capture on all 8 SDI interfaces at the same time?

ggnull35 commented 7 years ago

You need to set right duplex mode to the card for your usage case. bmdcapture does not set it.

PreDeToR commented 7 years ago

Thanks @ggnull35 . I managed to set the mode on cards and its working now.