Maybe try one of the test images? (mystieus beat me to it )
Its supposed to show 4:2:2 clearly or no clear image for 4:2:0.
-PG
If you can read the blue text it's 4:4:4. You shouldn't be able to read the blue text on 4:2:0.
What is this TV? ... Why am I able to read the blue text?
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