Honda 2014 Civic Coupe Owner's Manual page 210

uuAudio System Basic OperationuPlaying a Video Using the HDMI®
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Changing the Screen Aspect
208
1. Select Settings to go to the Settings
screen.
2. Select Audio.
3. Select Aspect Ratio Adjustment.
4. Select the setting you want.
5. Select OK.
1Playing a Video Using the HDMI®
This feature is limited while driving. To play videos,
stop your vehicle and apply the parking brake.