SRT
SubRip Text (SRT) is a text format for subtitles, described as βthe most basic of all subtitle formatsβ. SRT files are plain text with the extension .srt.
Format
Subtitles are placed into sequentially ordered groups, with a starting and ending timestamp, encoded hours:minutes:seconds,milliseconds. Note the seperator for the millisecond value is a comma. The starting and ending value are seperated by -->.
Unoffical features
Some basic HTML tags are supported by some viewers, such as:
<b>bold</b>bold<i>italics</i>italics<u></u>underlined<font color="#0000FF">Blue</font>colored text.
Note these will be displayed verbatim on viewers that donβt support these features.
Example
100:00:00,000 --> 00:01:00,000This subtitle will be visible for the first minute of the stream
200:01:00,000 --> 00:01:30,000and this one for thirty seconds after that.