Question about Multi-Channel audio capture with Blackmagic

Hi,
I want to capture HDMI and SDI embedded 5.1ch audio with BMD UltraStudio Mini Recorder and DeckLink 4K Extreme 12G.
At first, I tried HDMI and BMD USMR with Audio Device In CHOP, but I captured only 2ch.
Of course, Audio Device In CHOP’s ‘Format’ is ‘Multi-Channel’ and from ‘Front Left’ to ‘Back Right’ toggles are ‘On’.

Is this a problem about Direct Sound driver?
Please let me know how can I capture HDMI and SDI embedded Multi-Channel audio with Blackmagic.

My developing environment is

  • Windows 10 Home
  • TouchDesigner 099 64bit build2018.24410

thank you.

Yasuhiro Hoshino

Hi Yasuhiro,

I am trying to do the same thing. Please have you figured out how to capture embedded SDI audio from Blackmagic device? Thanks.

Monty