by cloud » 27 Apr 2010, 06:15
Sorry. the subtitle isn't an individual stream or file.
In fact, when backuping a DVD, our software will keep the same file structure as the original one. For DVD file structure (which has a VIDEO_TS folder includes many .ifo, .vob and .bup files), the subtitle are stored in the .vob file, but all the navigation information in stored in the .ifo file. When playing back, DVD player software will read the .ifo files to know which subtitle should be open.
If you just use "the entire disc", all the subtitles on the original DVD will be included in the shrunk DVD. You may switch the subtitle to the one you wanted by setting it on the DVD menu.
Let me know your demand, then I'll give you exact instructions.