portrait format to landscape format but without black bars

Hi,

I do have a video in portrait format (well it's more than one but if I solve it here I won't have any trouble going forward ). I know how to rotate it but the problem is that during the rotation black bars does appear which I'm not able to remove. I tried already some scaling options after the rotation. Unfortunatelly without any success.

Is somebody around who can help me with? Thanks in advance.

Ok. Got this sorted already. Was able to fix it with zoom and new x/y position. Works pretty well even if it might not the ideal way of solving this issue.