pi0 USB capture device detected but no live video, only solid white LEDs

Hello,

Apologies if this is an issue that has already been discussed, but after searching I could not find anything matching this issue.

I have hyperion running on my pi0 using GPIO18 just fine, 5V PSU powers both pi and LEDs, boot and background effects work fine. But when I connect a USB capture card, all I get are solid white LEDs and I do not see any live video feed in hyperion. The lighting is difficult to see here because this picture was taken in daylight, but trust that the LEDs are all showing white.

I have my capture card input coming in from my stereo receiver zone B hdmi out (receiver is set to output to both zones simultaneously, confirmed working with other device). Settings are as follows.

I have tried the following to no avail:

power cycle the pi

start pi before attaching USB capture input (other posts suggested this may work)

verified that all cables are functional

verified Zone B video output working

verified the capture card works on another device

adjusting the USB capture framerate up and down

adjusting the USB capture resolution up and down

changing the Encoding format

changing the Size decimation

Any advice would be very much appreciated, thank you in advance!

Thanks for your response!

I ordered an HDMI splitter and this appears to have solved the issue. Link to splitter

The splitter dipswitch setting is set to "compliant" (1 up, 2 down, 3 down, 4 up). I installed the splitter upstream of the stereo receiver to preserve ARC functionality between my TV and the receiver. We currently primarily use one source through the receiver anyway, so no big deal.

Not exactly sure if it was an HDCP issue or an issue with the wrong resolution going to the pi, or probably some combination of both..... But, at any rate, this solution worked.