I want to have curves and lines draw across or between points in a video clip that has hand held camera moves in it.
I've motion tracked the points I want to use and assigned the tracking data to a null at each point. Ideally I'd like to then link a vertex in a shape path to a null so I can have a stroke animate in and join up the tracked points and then the vertices can "stick" with the video as it draws on.
It's not possible to stabilise the shot animate then "de-stabilise" the shape layer as there's some parallax as the camera turns through a small angle.
There's a couple of Tuts that suggest work arounds, such as using the Beam or Path Text (dots and dashes) effects on a solid layer as they have vertexes that can be pickwhipped to position properties. I then have to use multiple layers and timings to create the illusion of a single line moving through the space.
There's also a RotAE script that I've come across:
http://www.fxfx.org/index.php/2011/03/27/how-to-attach-a-mask-point-to -a-layer-in-after-effects/
However I wanted to check if it's actually impossible and these workarounds are the only options?