You don't need any extra software to do this. Video DVDs are simply regular Data DVDs with the appropriate files on them.
Insert your wedding video DVD, open it, you'll see two folders, AUDIO_TS and VIDEO_TS. Make a folder on your desktop and copy these two folders from the wedding DVD into it. You will need both, for sure, even though there is nothing in the AUDIO_TS folder. You still need that empty folder!
Then eject your wedding video, insert a blank DVD. When the Mac spins it up and sees that it's blank, it'll prompt you with what to do with it. Simply let it open with the Finder. It will then mount on your desktop like a regular DVD.
Drag And Drop your AUDIO_TS and VIDEO_TS folders into the blank DVD. In a finder window, you'll see the blank Untitled DVD has a little radiation warning symbol next to it. That is actually the "burn button". Click it, give the DVD a name, set it for 8x speed to write, and wait.
That's all there is to it.
NOTE: This will not work for copy protected commercial DVDs, and duplicating copyright protected material is highly ILLEGAL and steals money from the folks who made it. Only copy DVDs you have a legal right to copy!
