[SOLVED] DVD Creation from ISO

Mageia 2 64 Bit KDE - added tainted and installed DeVeDe, and most every codec I normally use.
Here is the problem - I make ISO images frm Video files and burn them with K3B.
In Mageia there are no apparant errors when I create the ISO and no apparant errors when I burn the DVD.
The resulting DVD however does not play and appears as blank when it loads. The burn section is visible on inspection.
The same problem with 3 other brands of DVD media. On Fedora the exact same sequence works every time and the DVD's are fine.
Any suggestions as to why K3B on Mageia fails?
Here is the problem - I make ISO images frm Video files and burn them with K3B.
In Mageia there are no apparant errors when I create the ISO and no apparant errors when I burn the DVD.
The resulting DVD however does not play and appears as blank when it loads. The burn section is visible on inspection.
The same problem with 3 other brands of DVD media. On Fedora the exact same sequence works every time and the DVD's are fine.
Any suggestions as to why K3B on Mageia fails?