I have solution for this, if you are interested here it is.
- Open Nero Burning ROM
- Select DVD Option
- Click on NEW
- Select IMAGE BURNER (ie burn to hard drive and not disk) I guess the option is on top
- Now in Video_TS folder of nero ROM drag and drop ur first Video_TS folder which u already have.
5 Click on Burn
This will create a .nrg file on your system.
Repeat the same process for your other three episodes for which u have video_ts folders ready. It'll take some 30 mins
Now you should have 4 .nrg files.
Now after this is done open your Nero Vision,
1. Select DVD and say ADD FILE. In the drop down box select ALL FILES, locate your .nrg files and select all the four. And Bingo, you are ready to burn these all on the same DVD, add chapters, menus etc as you do normally. But i hope you have enough hard disk space.....