Authoring DVD video requires software that creates a UDF file system and a VIDEO_TS folder with VOB and IFO files. It's not enough to burn an mpeg file.
Oh, I see what she wants: take the video OFF of the camcorder medium, convert it to MP4 and post it online.
I don't know how to do that on the Mac.
Well, he was told that Popcorn would break the video down into parts. Then all he would have to do is import the parts into imovie to edit. THen he could us a quicktime download to rip it to impeg. But this didn't work. What kind of program is the best for ripping apart a DVD?