SubRip

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

It may have the file extension .srt. It can be embedded in mkv files

Specification

Format

Each frame of a subtitle is formatted as follows:

n

h1:m1:s1,d1 --> h2:m2:s2,d2

Line 1

Line 2

...

(blank line between subtitle frames)

n = sequential number. This may also appear on the same line as start/stop times.
h1:m1:s1,d1 = start time of this frame, in hours minutes and seconds to three decimal places.
h2:m2:s2,d2 = stop time.

Note the French-style comma for the decimal delimiter.

Example: a 2 frame subtitle

1
00:00:20,000 --> 00:00:24,400
a bla bla ble a bla bla ble
a bla bla ble
 
2 
00:00:24,600 --> 00:00:27,800 
a bla bla ble... 

Extensions

Some subtitles feature html tags inside the SubRip text:

• <b>...</b>: bold
• <s>...</s>: strikethrough
• <u>...</u>: underline
• <i>...</i>: italic
• <font color=... face=...>: font attributes