When using Decklink 8K Pro for multi-channel independent, if the signal not all the same clock reference, or not all 4 inputs in connected, it will cause the sound disappear after some seconds. And the sound only way to recovery is need to reboot system.
Here are the demo for only connect 3 SDI input from converter:
you can see after few seconds, the sound has disappeared.
And here is the demo for change the signal from ATEM switch to converter by using Videohub, you can see the sound signal disappeared after I change the signal source and for few seconds.
The same connection and signal are tested at Decklink Duo 2, they work perfectly.
Test Platform:
OS: Ubuntu 18.04 LTS
CPU: Intel I9-9900K
RAM: Cosair 8G * 4
GPU: NVIDIA Titan V
CaptureCard 1-4: Decklink 8K Pro
CaptureCard 5: Decklink SDI Micro
Signal Type:
3G-SDI Type A (also tested with 3G-SDI Type B, the same results)
Signal Source:
1*Blackmagic Design HDMI to SDI 4k
1*ATMOUS SHOGUN
4*MD-HX
1*ATEM 4K Production
1*Videohub 20x20
The test platform:
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