How to extract/demux SVCD subtitles?

[Graal_CPM]

I have been trying to extract subtitle streams from SVCDs without success so far.
With VCDGear I have remuxed original CD file to a Windows compliant "movie.mpg" file which plays nicely with VLC (subtitles are displayed).
Mediainfo shows the following (I have removed video and audio details):

General
Complete name : movie.mpg
Format : MPEG-PS
File size : 734 MiB
Duration : 46mn 49s
Overall bit rate : 2 192 Kbps

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
(...) etc

Audio #1
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
(...) etc

Text #1
ID : 189 (0xBD)
Format : RLE
Format/Info : Run-length encoding

Text #2
ID : 189 (0xBD)-1 (0x1)
Format : RLE
Format/Info : Run-length encoding
Muxing mode : DVD-Video


I have tried tsmuxerGUI (demuxes only video and audio), Mediacoder (same, does not demux subtitles) and CCextractor (just in case, still no success). Most DVD related tools I have found requests IFO as input files...

Do you have any idea what tool I can use to extract these subtitles to, say, vobsub format? :confused:

[Jalavera]

Try spuunmux from dvdauthor

http://www.paehl.com/open_source/?download=dvdauthor_cygwin.7z

[Graal_CPM]

Try spuunmux from dvdauthor

http://www.paehl.com/open_source/?download=dvdauthor_cygwin.7z

Thank you for the tip!
I ran some tests with no success.

These subtitle are supposed to be in OGT i-author format. Several tools are still available to create SVCD streams with such subtitles, but it seems there is no tool for extraction.
Only VLC can play them and if I had any coding skills I could consider developing my own demuxer... Alas, I don't have these skills.
I am also sure that given the past success of SVCD in Asia, there must be some Chinese/Taiwanese program laying around doing exactly what I need... Does anybody speaks Chinese here? :p