DVD from iPad? As in video shot with an iPad that needs to be made into a DVD?
The standard pro NLEs will work with that CODEC: Adobe CS6 suite, Avid Media Composer, Final Cut Pro (Mac only). You can use DVD authoring software from the above, or your computer may already have something basic that will work.
These are all pay programs and they aren't cheap, but you can 'subscribe' to Adobe's CS6 suite for around $30-$50 a month.