Changing the Video Output Resolution to 720x1280 (Portrait)

[Richboy]

I cannot change the Video Output Resolutions from 1280x720 to 720x1280 (portrait). What should I do? TY

 

[Zeros.81]

Type it manually

 

[Richboy]

Type it manually

The field will not accept manual input. It's on dropdown box

 

[Zeros.81]

You definitelly can. Double Clic on the resolution box an then type your desired size