I'm using Movie Edit Pro 17 Plus. When I want to burn a standard definition video, the burner keeps telling me that the DVD-R discs I've inserted are DVD+R discs. How can I fix that problem?
The burner gets the disc information from the disc itself - if it is telling you that it is a DVD+R then that is what the disc is - unless you have bought cheap discs in which case they could be anything including being counterfeit.
If they are genuine DVD+R then there is no problem burning your movie to them unless your player can only accept DVD-R - which would be extremely rare!