How do I record a vertical video on Mac with Iphone continuity camera?

Hello edgaras177,

If you'd like this feature to work differently, you can leave feedback for Apple using this link:

Product Feedback - Apple

Select your iPhone as the product, to get started.

Take care!

Hi edgaras177,

You started from a great resource:Continuity Camera: Use iPhone as a webcam for Mac - Apple Support

For help with the orientation check your settings with the information below found in the resource you started from.

"Mount your iPhone

iPhone-compatible mounts and stands are available from many manufacturers. When mounted, make sure that your iPhone is:

• Near your Mac
• Locked
• Stable
• Positioned with its rear cameras facing you and unobstructed 
• In landscape orientation to allow apps to choose your iPhone automatically, or in portrait orientation"

If the issue continues, check the steps in the section "If Continuity Camera isn't working as expected" You can also test with your screen orientation locked or unlocked. Rotate the screen on your iPhone or iPod touch - Apple Support

Cheers.