SubRip

This is the native subtitle format of the SubRip (cache) program. It is one of the most used formats for subtitles.

Subtitles are formatted like:

n h1:m1:s1,d1 --> h2:m2:s2,d2
Line1
Line2
...
<empty line>

n = sequential number
h1:m1:s1,d1 = start time
h2:m2:s1,d2 = stop time