FEW IMPORTANT POINTS:

1. In some cases you'll find that the DVDDecrypter is unable to copy the VOB files. In such cases, do one of the followings:

EITHER:
a. Copy the whole DVD in .ISO format using DVDDecrypter. Please note that in this case, DVDDecrypter will not generate any .txt. file (, as mentioned before step 1 in the tutorial)
b. Then open it up using virtual CD Drive
c. you're ready now...follow Step 1- onwards :)
** You can also try by directly accessing the DVD. I haven't tried it yet. but it's worth checking

OR:
a. Select the VOB and IFO Files and copy them directly using DVDDecrypter. Please note that in this case, DVDDecrypter will not generate any .txt. file (, as mentioned before step 1 in the tutorial)
b. you're ready now...follow Step 1- onwards :)

2. Please AVOID inputting any character that is not ANSI and thus avoid saving the .srt files in ANY Standard other than ANSI. For e.g., if you see the music symbol during the OCR process replace it with a character that is ANSI, for example you can use ~ (Tilda)