Nero Playback during DVD burning

I noticed that it takes a long time for Nero to transcode an *.avi file to whatever file format a DVD is. But it does so while playing back the movie while transcoding.

Is there a way to turn off the playback?

And I have converted the *.avi files to *.VOB files, but Nero wants to transcode it before burning and does so while playing back the movie to me.

I’m starting to dislike this program.

May I ask someone, anyone to shed some light please?

Thanks in advance.