How to change the video from portrait to landscape mode?

[hajime]

Hello, I used my iphone 6s plus to take videos. Although I placed the phone in landscape orientation during video shootings, some of the videos turned out smaller and in portrait rather than landscape mode. It could be caused by the apps I used. Is there a way to fix this problem?

 

[richard2]

You can rotate videos using QuickTime Player. Press shift-command-L or shift-command-R to rotate a video anticlockwise or clockwise respectively.

 

[hajime]

You can rotate videos using QuickTime Player. Press shift-command-L or shift-command-R to rotate a video anticlockwise or clockwise respectively.

Thank you. What caused the issue?

 

[richard2]

iOS devices sometimes incorrectly detect their orientation. You can reduce the chance of this happening by holding your device perpendicular to the ground before you begin using the camera.