So I have a roku TV (Hisense 55") that supports 12bpc at 4k60, but it doesn’t have any displayport ports. What can I do to actually hit 12bpc at 4k60 without going down to YCBCR 4:2:0?
Yeah 4:4:4 works, but not 12bpc. I haven’t tested 10bpc.
but not with 12bpc*
Idk what to elaborate on since im a noob, but the TV has 3 hdmi ports with 1 Earc port. The tv is also hdr and pretty recent.
Alright, well pull up the specification sheet for the exact model of the TV. As the versioning of the Hdmi ports should be listed.
I wouldn’t agonize over the input bit depth too much because AFAIK consumer grade 12bit panels don’t actually exist. The TV may take a 12 bit signal as input but by the time it hits the panel it’ll be either 8 bit or 10 bit at best with the remaining bits either being discarded, or possibly used to do some form of temporal dithering.
Virtually all recorded media is also 4:2:0 so if you’re not gaming or using the TV as a monitor then everything will already be in 4:2:0.
If you’re only using the set to watch media then 4:2:0 at 12bpc would be ideal for Dolby vision content but if you game or use the set as a monitor then 4:4:4 is ideal.
What’s the differnce between 4:2:0 and 4:4:4?
The numbers respresent the various levels of chroma subsampling. Humans are able to discern luminance detail much better than color detail so media formats typically only use one quarter the number of values for color vs the number of values representing luminance.
4:4:4 signals have equal levels of detail for both luminance and chrominance while 4:2:0 signals have just one quarter as much color data.
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