I’m comparing quality of chroma upsampling across several devices using a Spears and Munsil 4K HDR test pattern. With my ATV, I get 4:2:2 output from Infuse when playing 4K24 HDR10. The result on my Panny OLED is actually very good, hard to distinguish from my UB820’s 444 output. Is there a way of configuring the ATV so that Infuse plays HDR10 4K24 at 444? I’ve been deep into the settings and have been unsuccessful.
Have you tried setting 4:4:4 here?
thanks, I’ve seen that link, I only have a choice between 420 and 422 when running the GUI in HDR. I tried a lower res and got a 444 option but on playing 4K24 HDR10 via Infuse I get 422. All my other devices connected to the AVR output 4K24 HDR10 at 444.
Did you try a different cable? I had a few issues on mine when switching to 444 and a newer high speed cable fixed it so it’d switch to 444.
Currently, the Apple TV only supports 4:2:0 and 4:2:2 for HDR.
4:4:4 can be used for SDR.
FWIW, nearly all commercial video content is going to be mastered in 4:2:0.
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thanks, useful to know, saves me tinkering with cables. Fortunately the 422 output from the ATV, as input to my TV’s downstream conversion chain looks very clean on the Spears and Munsil test, better than the 444 output from a couple of Amlogic boxes I have (unfortunately these boxes only offer 422 subsampled from their poor 444, so their 422 is even worse).