usage

ofxAfterEffectsKeyframeParser aekey;
aekey.open("test.txt");

aekey.dumpTrackName();

const ofxAfterEffectsKeyframeParser::Track &t = aekey.getTrack("Motion Trackers/Tracker #1/Track Point #1/Attach Point");

for (int i = 0 ; i <= aekey.getLastFrame(); i++)
{
	cout << i << " " << t.getParam(i, "X pixels") << endl;
}