Subtitle preview:
# VobSub index file, v7 (do not modify this line!)
# Created by BDSup2Sub 3.9.9
# Frame size
size: 1920x1080
# Origin - upper-left corner
org: 0, 0
# Scaling
scale: 100%, 100%
# Alpha blending
alpha: 100%
# Smoothing
smooth: OFF
# Fade in/out in milliseconds
fadein/out: 0, 0
# Force subtitle placement relative to (org.x, org.y)
align: OFF at LEFT TOP