breaking Multiple language subtitle file into parts

Hi all

I have ripped a "friends DVD" and for helping all my friends who are in different parts of world speaking different languages, I ripped the dvd with external subtitles. I have encoded the option to play audio in any of the 3 languages available.

As there is a problem in AutoGK that I cannot rip the individual chapter of the DVD so when i converted VTS_01 ifo to avi, which had 3 chapters
I got a single AVI file having 3 episodes with 3 audio tracks and alongwith it i had an IDX file and a SUB file. this sub file allows me to run subtitles in any of 8 languages i.e. eng, spanish, arabic, italian etc and any of 3 audio track.

I want to upload the "DVD rip of friends" on net. But i want to convert the "3 episodes single file of 700 MB with multiple subtitles and Audio track" to 3 individual files of each episode with having option of 3 audio tracks and 8 subtitles options in each one of them.

Can anyone tell me a software that uses this IDX and SUB file and breaks into 3 IDX and SUB files for each episode of friends.

help for breaking 700 MB AVI file into 3 individual files of each episode having option of all audio tracks shall also be welcomed.

Hoping for a reply.

Thanks in advance

 

Thanks a lot.

I just want to know that if i have a file which has subtitles of 3 episodes and in 8 languages.. how can i break it in 1 episode each with all 8 languages.
as the files i have are idx and sub . if i open these files in notepad..its all gibberish.
it is only visible when i play movie