Honda Civic 2017 Owner's Manual page 321

uuAudio System Basic OperationuPlaying a Video Using the HDMI
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Changing the Screen Aspect
* Not available on all models
320
TM *
1. Press the button.
2. Select Settings.
3. Select Audio.
4. Select the Video tab.
5. Select Aspect Ratio Adjustment.
6. Select the setting you want.
7. Select OK.
*
1Playing a Video Using the HDMI TM
This feature is limited while driving. To play videos,
stop your vehicle and apply the parking brake.