Have a look at the image in the following link: http://www.gnutellaforums.com/showth...467#post127467 DVD2oneX does a good job. But that's really for working with extracted dvd's. (If you're talking about standalone avi files then if you have the appropriate Quicktime codecs you could edit them with iMovie.)

Remember that using Toast 6 you can also edit out the intro & credits at the end if necessary. Select the track & press edit button. Select video & move 1st or last markers in to choose beginning & ending parts.

It's not wise to recompress movies that have already been compressed b/c each time it loses more quality.

Of course to burn dvd's to play on a set-top player you don't choose data format. Dvd movies need to be in UDF format. For copying dvd's choose udf but for creating movie dvd use video format.