How can i export a movie from a slideshow at 25p instead of 30p

I'm running on several Mac products, iMac, MacPro, MacBookPro, etc...

While i have finished a nice Diaporama (slideshow) in iPhoto version 9.6 for example on Yosemite 10.10.2,

the only question when i click on EXPORT is which format (e.g., 720, or full HD 1080 for exemple)

But before, i was lucky enough to be able to select the number of fps (e.g. 25 in Europe as you all know)

Now, since a while, this question just disappears ! plouf ! no more....

So, the fps is now by default the one for US, which is 30.. cool !! and incredible...

Does now Apple think that US is the only country in the world ??

While 30 frames is fine on a computer, it is not on a pal DVD...

Any comments from anyone around the globe would be fine ! :-)

Thanks anyway

Patrick