If you guys don’t know, in video editing apps, if you have the hardware you have the option of picking 4:2:2 color sampling, which retains more colors than the standard 4:2:0 sampling (at the cost of larger video size)
YouTube re-encodes your video to 4:2:0 anyway. They likely won’t support 4:2:2 until hardware decode support is wide, which as you can see by those charts is a ways off.
Most likely not an issue for you. As someone else mentioned, your delivery to YouTube will be 8-bit 4:2:0 anyways. The only reason to be concerned about HEVC 10-bit 4:2:2 hardware support is if you have a camera that records 10 bit Log or HLG. If you dont have such a camera and dont plan on getting one then its a non issue. Screen recording gameplay will also generally be in 8-bit 420 rec709 unless you are super deep into HDR gaming and HDR screen recording. But I’m guess if you were that into HDR you would already know all of what I’m saying and wouldn’t be asking about this.
The only reason to be concerned about HEVC 10-bit 4:2:2 hardware support is if you have a camera that records 10 bit Log or HLG
I actually do plan on buying a phone with 10 bit Log support in the future (the Vivo X300), but thanks for the tip that videogame recordings use 4:2:0!