Hi

I'm looking for recommendations for a video editor that's easy to use (home usage) but has the following features:

 - Open, save and work with DVD format (MPEG-2)
 - Should be able to extract the audio from the video and add audio from external file (Or be able to delete clips from the source without cutting the audio stream)
 - Subtitles
 - Adding static/scrolling text to video
 - Credits screen
 - Define custom chapters and create navigation menus

Also, it'd be real handy if the program doesn't have to re-code the entire file whenever the save button is pressed. I'm trying to create a single-disk video out of something that's spread across 10 DVDs, so I'd like to just be able to select the clips that I want, save the file, then change the DVD, add more clips, save, change.. and so on, without having to perform any encoding/conversion.