I recommend you use Aimersoft DVD Creator to convert the aiv format to DVD format.It supports all the common format:
AVI, MP4, MPG, MPEG, 3GP, WMV, ASF, DAT, MOV, FLV and even most HD formats like MKV files, FLV (Youtube), M2TS, TP and TRP.
(Disc supported: DVD–5,DVD–9; DVD-R, DVD+R, DVD-RW, DVD+RW, DVD+R DL, DVD-R DL or DVD-RAM)
Here is the step-by-step using guide:
http://www.dvd-creator.org/tutorial/convert-avi-video-to-dvd.html
