Can be a single tracking marker used for plane rotation?


As a new blender user I’m playing around to learn the interface, so in my (first) fun project I would like to track some faces in a movie. But the video has too small resolution for multiple tracking markers (4 for 2D plane generation). Is it possible to export all atributes of one tracking marker? It seems that one marker region is basically plane too (crude, but sufficient for my needs) as tracking marker is defined by transformation of 4 points and rotation.

Second question is: Is it possible to make a plane invisible outside interval of defined marker path?

Thanks for help.