Manual tracking: 3D alternative to "retrieve z coordinates"?

Hi there,

I was using the Manual Tracking plugin to create a motion track from a video which I had separated into single frames.

I have another video from a camera in another axis.(this one is from the side of the moving object, the other was in front of it)

I was wondering if there is a way to integrate these two traces to produce 3D tracking?

Or whether there is an alternative plugin I am unaware of which may be of more use