Videos that are recorded usually from cell phones are often out of frame and can give its viewer neck strains. To adjust its angle and make the video rotate to the perfect angle we need to adjust in VLC and then save so that the change is permanent.
Below is the sample out of axis video. We will fix its angle to the appropriate one.
Open the VLC Player and go to Tools → Effects and Filters or Press Ctrl + E
Now follow the steps shows in the image below and explain beneath it.
Click Video Effects tab
Click on Geometry Tab
Select the Rotate Check Box
Move the Angle knobs to your desired angle while the video is playing
When you are satisfied with the adjustments it is time to make these changes permanent. Go to Media → Convert / Save or Press Ctrl + R
Next select your video file
Click on the File tab.
Press Add... and select video.
Selection will be shown here.
Press the Drop down select menu.
Select Convert or Press Alt + O
Select the format in which you wish to export the video, default is enough for majority of the cases. Select the destination where the file would be saved and press the Start button.
Wait for sometime till the export is done. When you are done go to Tools → Preferences or press Ctrl + P and press the Reset Preferences Button shown below.
This step is vital as it restore the original state of the VLC clearing all the changes you made.