0:00:01.000,0:00:03.000
SBV has no cue numbers at all

0:00:03.500,0:00:06.000
Times use a comma separator, not an arrow

0:00:06.500,0:00:09.000
Single-digit hours, three-decimal seconds

0:00:09.500,0:00:12.000
[Sound effects use square brackets too]