Roku Device Features, Settings & Updates

Help configuring Roku device settings, using Roku OS features such as screen mirroring, adjusting display type and audio settings, using Guest Mode, and assistance with software updates.
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Level 7

Full screen

Can any body tell me how to get full screen movies to play? I bought a Roku premier and when I put it in local channels it is full screen HD when I put a HD movie on I have 2 black borders on top and bottom of the picture? Any ideas

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