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screen size

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Paul Oneill
Paul Oneill
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HELLO, my YouTube music show black bars how do I get rid of them, I know my screen is 16÷9, but I don't know how to get 21÷9 can you help. Thank you

HELLO, my YouTube music show black bars how do I get rid of them, I know my screen is 16÷9, but I don't know how to get 21÷9 can you help. Thank you

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