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SubRip Text (SRT) is a text format for subtitles, described as 'the most basic of all subtitle formats'. SRT files are plain text with the extension .srt.


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 don't support these features.


00:00:00,000 --> 00:01:00,000
This subtitle will be visible for the first minute of the stream

00:01:00,000 --> 00:01:30,000
and this one for thirty seconds after that.