Type of :Subtitles 

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.

SubRip 

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

SubRip 

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

How to add subtitles to a video 

http://www.videohelp.com/guides.php?howtoselect=5;20#5;20

Add permanent subtitles with ffdshow or vobsub 

Add permanent subtitles to VCD,SVCD,DVD,AVI with ffdshow or vobsub and convert with Tmpgenc

This is probably the easiest way of adding permanent subtitles to VCD, SVCD, DVD or AVI/DivX/XviD. No frameserving required.

Link http://www.videohelp.com/forum/userguides/153058.php

Tools used ffdshow, TMPGEnc, VobSub

How to add permanent subtitles with VobSub 

There are several ways to add permanent subs. This is only one solution. Usual subtitle formats are *.srt (subrip), *.sub (microDVD), *.sub (subviewer), *.ssa (Sub Station Alpha), *.sub (vobsub, requires a *.idx too).

Link http://www.videohelp.com/forum/userguides/87065.php

Tools used Avisynth, Virtualdub, VobSub

How to add permanent subtitles from sub/srt subtitles to DiVX/AVI video 

How to add permanent subtitles from sub/srt subtitles to DiVX/AVI video and encode it to a VCD/SVCD. This method makes permanent subs in the video that you can not turn off.

Link http://www.videohelp.com/srtsubsvirtual.htm

Tools used TMPGEnc, Virtualdub

OGM to SVCD with Permanent Subtitle 

http://www.videohelp.com/forum/archive/t231739.html

saitoh183 posted 2004 Jul 29

This guide is to Convert OGM Anime to SVCD with permanent subtitle. Well i'm really not a professional in video editing so dont expect too much or any technical in this guide.I created it by searching many sites that had any sort of info on SVCD creating and by putting a little of all the methods I found I came up with a quick and easy way (that worked for me:)) to convert OGM into SVCD. Let me just say that i give most of credit to this guide to all the people that give there time to give helpful info on SVCD.

Tools needed: