Table of Contents
http://wiki.videolan.org/index.php/Subtitles
There are a lot of different types of external subtitle files. Most contain textual data. That is the subtitle and a timestamp at which this subtitles is to be shown. Some of these allow for additional formatting, others don't.
There are also subtitles which are essentially pictures instead of text. These kind of subtitles are used in DVDs, VCDs and the external VobSub files.
There are also some fileformats to which you can add subtitles. These include:
It is not easy to stream subtitles. DVB or DVD subtitles encapsulated in a TS MPEG stream is your best bet.
http://wiki.videolan.org/index.php/SubRip
From VideoLAN wiki
This is the native subtitle format of the SubRip (http://zuggy.wz.cz/) (cache) program. It is one of the most used formats for subtitles.
Subtitles are formatted like:
n h1:m1:s1,d1 --> h2:m2:s2,d2 Line1 Line2 ... <empty line>
n = sequential number h1:m1:s1,d1 = start time h2:m2:s1,d2 = stop time
http://www.videohelp.com/guides.php?guideid=186&howtoselect=5;20
Usual subtitle formats are *.srt (subrip), *.sub (microDVD), *.sub (subviewer), *.ssa (Sub Station Alpha), *.sub (vobsub, requires a *.idx too).
documented on: 2005.04.11