Layer had a pan on it. Final keyframes for 1920,1080 layer:
anchor = 1531.5, 387.7
pos = 53, 653.5
scale = 156.3, 156.3
To calculate comp size:
a=transform.anchorPoint; s=transform.scale; p=transform.position;
x= a[0]*s[0]/100 - p[0] + 1920;
y=((1080-a[1])*s[1]/100)+p[1];
[x,y]
Compsize = [4260.4, 1735.4]
