How to Rotate a Video 90 degree on Windows or Mac
#1. Windows Live Move Maker : Click on Start button and search for Movie Maker, if you don’t find Movie Maker in Windows, download it from Microsoft Website.
Open the app, click on the “Add Videos and Photo” icon and locate the video that you want to rotate, double click the file. Now locate the rotate video icons in the Editing section and click the “Rotate left” or “Rotate right” button to rotate the video in 90 degree increments. Save the changes you’ve made by clicking the “Save Movie” button in the Home tab and choose the desired format.
#2. VLC : Open your video in VLC and open the Tools menu > select “Effects and Filters’ or press Ctrl + E. Click on the “Video Effects” tab, and then check “Transform” to rotate the video 90 degree.
This change isn’t permanent, to save the video in its new orientation, you’ve to open Tools > Preferences and at the bottom of the preferences windows, enable “All” settings. Now find the heading call “Sout stream” (under Stream Output) then click on “Transcode” and choose “Rotate video filter” from the selections to the right and finally click “Save”.
Click open VLC’s Media menu > Convert/Save, click Add and choose the file we just rotated. Click on the “Convert/Save” button at the bottom of this dialog and then “Convert” (Alt+O). Select a destination and file name to which you want to save your new file. Go ahead and click “Start” and the file will be converted and saved.
#3. Download iMovie which is available at Mac App Store and open iMovie, click the file menu, select import and select video. Open the Crop Menu by selecting your video and press “C” on your keyboard or by clicking the crop button in the middle toolbar. You’ll see the Rotate buttons appear at the top of the viewer and click the Left or Right rotation buttons to rotate the image in 90 degree increments, click done.
Note : Use the “Fit” option to ensure that you don’t lose any of the edges of your video when it’s rotated.