I've also gotten myself an ezcap269, to use with my Shield TV (2019) and Philips 43PUS6503 TV, as I want to be able to watch 4k60 hdr and run Hyperion on a third device.
Now, everything sort of works but the ezcap does seem to provice some problems. I know this forum is about Hyperion, but it's one of the few if not the only place of active discussion regarding the ezcap269.
When I play for example Netflix on my Shield through the ezcap to the TV, I get 4k60, HDR10, rec2020/yuv420 video as reported by the TV. So far, so good. When I try to capture something from the ezcap, the Shield reduces video quality to either one of these..
1080p59, HDR, RGB
4k30, HDR, RGB
4k60, SDR, RGB
If I stop the capture and restart both the shield and the TV, it will again resume 4k60 HDR playback.
The ezcap is (for now) connected to my Ubuntu 16.06 laptop, when I hook it up to my Win10 desktop (because I thought it might have been lacking power) it actually immediately downgrades the quality without even turning capture on.
So in short: 4K60HDR throughput works fine if the pc's not doing anything, enabling capture reduces the throughput quality.
What's up with that? Or is this 'normal' behaviour? I have updated the firmware, although I find it hard to see to what version exactly..
Edit: I have also found that if I hook the ezcap up to power only, it's max throughput will be 1440p60, which is lower than when it's connected to my (not-capturing) Linux laptop..