This is the native subtitle format of the SubRip (cache) program. It is one of the most used formats for subtitles. The most common (optional) filename extension is .SRT.
Subtitles are formatted as follows:
- h1:m1:s1,d1 --> h2:m2:s2,d2
- <blank line>
n = sequential number. This may also appear on the same line as start/stop times.
h1:m1:s1,d1 = start time
h2:m2:s1,d2 = stop time