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Screen Mirroring with HDMI Question

I just got the digital av adapter to mirror the screen onto a 42" HDTV. I understand that because of the different ratios of the tv and ipad that it will not take the whole screen on the tv, but when in horizontal mode there are black bars on all 4 sides! Pictures on apple's own website show it just having bars on side. Is there a way to fix this? My tv only has 4:3 and 16:9 options, even the zoom settings are greyed out.

Posted on Apr 4, 2011 2:40 PM

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66 replies

Sep 13, 2013 11:33 AM in response to spiderguy84

I'm an iOS developer and ran into this same problem implementing a dual screen app. I think there are two solutions to this problem, one for the developer, one for the user.


Developers can solve it by setting a property on their external screen:

externalScreen.overscanCompensation =UIScreenOverscanCompensationInsetBounds|UIScreenOverscanCo
mpensationInsetApplicationFrame;

If you have the borders with AirPlay Mirroring but not with your dual screen app, it's because the developer implemented it this way.


Everyone else should try change a setting on their Apple TV:

Settings > Audio & Video > Adjust For AirPlay Overscan

This setting is On by default. Try setting it Off.

This solved it for me, also for AirPlay Mirroring. No more black borders! Let me know if this solves it for you...

Screen Mirroring with HDMI Question

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