HDMI splitter confusion - Mac Studio

If you're using an HDMI splitter that goes to two TVs, will the Mac recognize both TVs or will it only identify one of them? I DO NOT want 2 TVs showing up as separate displays on my Mac.. All I'm trying to do is clone/mirror one TV to another but can't seem to figure out how to do this. Thank you!

Posted on Nov 10, 2023 9:15 AM

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Posted on Nov 10, 2023 5:49 PM

My guess is that the Mac won't detect the TVs, or show them as displays anywhere in System Information. It will see the HDMI splitter as a display, and this will only count as using one of your supported video outputs.


There will be no extended desktop option if the computer sees the splitter as "the" display, and if mirroring is the only thing that the splitter knows how to do.


I don't know how HDMI splitters work if you attach two TVs with different resolutions – 1080p and 4K. Maybe the splitters pick the lowest common one (1080p) as the one they tell the computer that they have. Then both of the monitors get clones of the 1080p signal.

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Question marked as Top-ranking reply

Nov 10, 2023 5:49 PM in response to toodles12345

My guess is that the Mac won't detect the TVs, or show them as displays anywhere in System Information. It will see the HDMI splitter as a display, and this will only count as using one of your supported video outputs.


There will be no extended desktop option if the computer sees the splitter as "the" display, and if mirroring is the only thing that the splitter knows how to do.


I don't know how HDMI splitters work if you attach two TVs with different resolutions – 1080p and 4K. Maybe the splitters pick the lowest common one (1080p) as the one they tell the computer that they have. Then both of the monitors get clones of the 1080p signal.

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HDMI splitter confusion - Mac Studio

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