Tips for editing a DVD movie

Hey

Got a question. I want to take an MKV movie file with dual audio tracks and burn it onto a standard 4.7GB DVD, keeping both audio tracks and the subtitles intact. What software should I be using for this?

Also, is it possible to merge two different DVDs? Say one disc has English audio and American subtitles, while the other has American audio but no subs. I want to combine them into one single disc that has everything—both English and American audio plus the American subtitles.
What kind of program can actually handle that, and what's the best way to go about it?

Thanks in advance...

For the first part of your question, you could probably just use any converter you can find. Even a free one like Format Factory should do the trick, I guess.

The first way is definitely the easiest and most straightforward if you just use Handbrake. For the second option, you could try using DVDFab instead—basically, you rip the disc directly to your hard drive, then just drag those DVD folder files into the software, and let the DVD duplication process handle all the heavy lifting for you.