Hi
"......I am able to do this, but then there are big borders around the images......."
If your input video is a 16:9 horizontal clip and you export as Borate describes at 9:16 there will be a 9:16 frame with the 16:9 image across the centre....
LEFT. Original 16:9 clip in VP.. RIGHT Exported 9:16 clip.. The whole of this is the clip..

There are borders top and bottom but the frame IS 9:16. If this 9:16 clip is loaded back to VP the image will be seen displayed with black (or grey) to either side as it will be loaded to a 16:9 frame and the areas to either side will be transparent.......

In VLC it will look the same but less obvious as the empty frame to either side is black....

The impression is that the image is surrounded by black which is not the case. This example is with an HORIZONTAL image
What were you hoping to see?
Nat
