1
00:00:00.930 --> 00:00:04.050
hi im a subtitle with 1 line

2
00:00:04.050 --> 00:00:10.000
i, however, have
2 lines

3
00:00:10.000 --> 00:00:12.000
me, though?
THREE, count 'em, *3*
lines

6
00:00:12.000 --> 00:00:15.000
kthxbye

that's really it. that first number, where I count 1, 2, 3, 6? that's the number of subtitle. As you can see if I fuck it up, it's fine. the second line is the time it should be on screen for. then the following text is your subtitle. separate the next unit with a blank line.