Is it possible to rip subtitles off one DVD and put on another

[Dekaspace]

I have an offical DVD set from Japan, unfortunatly it isnt subtitled, I also have fansubbed DVDs which have subtitles which can be turned on and off) but the picture on them is nowhere near as good as the offical ones.

So I want to rip the subtitles from the fan ones, and make backups of my offical DVDS(dvd5 anyway so wont loose any quality) and splice them onto them, forced or otherwise.

Is this possible/hard/time consuming.

Also if possible how do I do it?

[borax]

1. It is possible
- It may cause sync problems if the two versions of the movie are not 100% the same
2. It can be hard... That depends on your knowledge and if you want/need to keep the original menus
3. time consuming? That is highly dependent on point 1 and 2...

How do I do it (very roughly - for details look into the correspondent guides):
1. Rip the complete 'original' DVD to your harddisk (using Vobedit, pgcdemux, rejig...)
2. Rip the subtitles from the other DVD as sup file(s) (using Vobedit, pgcdemux, rejig...)
3. Remultiplex the streams from the 'original' DVD with the sup file(s) to a new DVD (ifoedit, muxman)
4. Adjust (copy from original subed DVD) the subtitle colors if necessary (ifoedit, dvdsubedit)
To keep menus, use vobblanker

[AlanHK]

Borax's method will work, but if you have to change any subtitles, due to different versions, it gets very complex.

The most flexible method is to get the new subs as text. If they're fansubs, you may be able to get the original files if you can track down the authors, their names are often embedded in the subs at the beginning. Otherwise, you can use one of several utilities, like DVDsubedit, to OCR the subtitle stream and make a subtitle text file. The simplest format is SRT, which doesn't allow much formatting.

To synchronise the subtitles you need to convert the VOBs to a single video file. An MPEG is the simplest. You only need this to provide the timing, you can author using the method Borax mentions.

Use Subtitle Workshop, load your SRT file, and the choose the MPEG as the "movie".
If you're lucky, they're in sync, and that's done.

Likely the start point is different. Play the movie to where the first subtitle should be note the exact time. Then go to the end and note the time of the last subtitle.
Type "Control B"
Enter the two times, click adjust.
If there were no edits in between, your subs are now correct.
Otherwise you'll have to adjust them in blocks or individually. RTFM for that.

You may be able to use the SRT to reauthor, or use a utility like Subtitle Creator to make a new binary SUP subtitle stream.