no it does not matter...but i would try to power everything from your PSU...i looked for your psu brick but a can not see how much ampere ONE usb port delivers... my guess is that the brick comes to his limits...
Will do! I ran “dmesg” last night and saw several warnings related to “Under voltage detected” so I fully believe this to be a power issue. I’ll try running the pi and the grabber off the PSU
I also noticed my Pi won't detect the grabber if I have it plugged into a USB 3.0 port, does that matter? Its in a 2.0 port
hm, as you can read in the first three lines, the grabber stops working... which settings do you use on the grabber? auto? i would try it with lower resolution settings
Thanks for the help TP! Heres a picture of my settings, I tried plugging the grabber into the Pi USB for power and it goes off almost immediately which is worse so I assume this may be a power thing although I feel like 4.8A for a Pi and an HDMI grabber should be plenty (which is what my USB brick is) 
do you power the grabber from the psu or from the rpi pins?
The grabber is being powered by the PSU.
Hello All-
New here and new to Hyperion. After some woes I got my Hyperion setup off the ground with the following hardware:
RPi4 running latest HyperBian
NodeMCU ESP8266 running latest WLED
WS2812's
5V/15A PSU for nodeMCU & LEDS
This HDMI grabber:
This power brick to power my Pi & HDMI grabber:
Everything works great for about 5 minutes during a movie then my nodemcu/WLED is shutting down. I could tell it was a "graceful" shutdown because if I opened the WLED app rather then it telling me it was being live controlled by Hyperion, the power was just set to off for the LEDs.
I found this in the logs, appears to be the cause. Any ideas on how to troubleshoot this? Thanks in advance!
2021-01-24T22:27:22.848Z [hyperiond V4L2:/DEV/VIDEO0] (ERROR) Throws error nr: VIDIOC_DQBUF error code 19, No such device
2021-01-24T22:27:22.853Z [hyperiond V4L2:/DEV/VIDEO0] (ERROR) VIDIOC_STREAMOFF error code 19, No such device
2021-01-24T22:27:22.859Z [hyperiond V4L2:/DEV/VIDEO0] (INFO) Stopped
2021-01-24T22:27:23.589Z [hyperiond HYPERION] (DEBUG) (PriorityMuxer.cpp:251:setInputImage()) Priority 240 is now inactive
2021-01-24T22:27:23.589Z [hyperiond HYPERION] (DEBUG) (PriorityMuxer.cpp:351:setCurrentTime()) Set visible priority to 255
2021-01-24T22:27:23.589Z [hyperiond HYPERION] (DEBUG) (Hyperion.cpp:559:handlePriorityChangedLedDevice()) priority[255], previousPriority[240]
2021-01-24T22:27:23.590Z [hyperiond HYPERION] (DEBUG) (Hyperion.cpp:562:handlePriorityChangedLedDevice()) No source left -> switch LED-Device off
2021-01-24T22:27:23.590Z [hyperiond LEDDEVICE] (DEBUG) (ProviderRestApi.cpp:179:getResponse()) Previous line repeats 1 times
2021-01-24T22:27:23.591Z [hyperiond LEDDEVICE] (DEBUG) (LedDeviceWled.cpp:150:powerOff())
2021-01-24T22:27:23.591Z [hyperiond LEDDEVICE] (DEBUG) (ProviderRestApi.cpp:150:put()) PUT: [http://192.168.4.11/json/state] [{"on":false}]
2021-01-24T22:27:23.682Z [hyperiond LEDDEVICE] (DEBUG) (ProviderRestApi.cpp:179:getResponse()) Reply.httpStatusCode [200]