Re: simply trying to track to ends of the same object by Maha Mohtaseb on Jun 13, 2013 at 6:14:12 pm
I'm not sure how complex the movement of your line is but there are expressions you can use on the line's path. But from what you've explained I'd probably go with 3D cam tracker/manual Keyframing. Set just a few main keyframes (4 or 5 or less) on the path. make them bezier. Use bezier handles to manipulate & smooth out motion between keyframes. You can add keyframes between the main ones as well if needed. Shouldn't take more than 5 minutes.