Do you just want to burn the files, or do you want to make a DVD-Video that you can watch in a set top DVD player?
If you want to just bur the files, see
Burning files to DVDR.
If you want to make a DVD player playable DVD-Video, you need a DVD-Video authoring program. NeroVision Express can do it, and a
free trial is available. When I was checking the link I noticed that it says that this isn't the trial, but it is. Download and install.
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