As we suppose bad DVD disc is the reason of such situation because of DVD burn library and burn sources do not change a long time ago. Please try to burn in Beta 11a by using the same disc and tell us results. Thanks.
Please read an article about some nuances with aspect ratio while preparing DVD discs by using PicturesToExe and Video Builder. http://www.wnsoft.com/apr/aspect-ratio.htm
Please read an article about some nuances with aspect ratio while preparing DVD discs by using PicturesToExe and Video Builder. http://www.wnsoft.com/apr/aspect-ratio.htm