SubRip

• Extensions: .srt
  • Can also be muxed into Matroska and AVI files (AviMux)
• Website: http://zuggy.wz.cz/
• Specs:

SubRip (SSA) is probably the most popular external subtitle fileformat. It is produced by the SubRip program that can do Optical Character Recognition (OCR) on the DVD subtitles. It also supports limited formatting options (Italic, Bold mostly).

Examples

1
00:00:00,264 --> 00:00:24,537
line 1
line 2

2
00:00:00,306 --> 00:00:04,306
line 1
line 2
line 3
line 4

3
00:00:30,544 --> 00:00:32,545
line 1