I'm using LyX and Beamer class these days for a presentation of Gimp 2.2.x. The result is great by the way! To add special effects I also use minipages in slides (or frames)
As for svg graphics here is my solution: I inserted 2 small identical images, the first one is svg and the other is png generated from Inkscape (older Sodipodi would do the same) to illustrate the differences between vector and bitmap graphics. Beamer uses pdflatex as converter and it manages very well pdf pages. I created with Scribus [http://www.scribus.net/] a small pdf pages (19mmx25mm) in which I inserted both images scaled to 17mmx20mm; I added the words vectoriel (vector) and matriciel (bitmap) with a 4pt Bitstream Vera font over each image. The choice of such a small page (correct me if I'm wrong) is because Beamer works with slides 96mmx128mm. I added the small pdf page with this ERT: \includegraphics [scale=1]{thepage.pdf} You can scale to the wanted size, I added the option in the ERT so that you may use this possibility. Finally, when you view your final presentation (in pdf format), you can view it fullscreen even with xpdf (3.01 is the version I use) this way: xpdf -fullscreen presentation.pdf But, if you use Acrobat Reader, be aware of this hidden trick: press z when a page is shown to switch to the zoom mode, Ctrl+= will zoom in, Ctrl+- will zoom out, and Ctrl+0 will go back to the original fullscreen size. Once the page is zoomed, you can mouve around the page by dragging with the mouse with the left button pressed. Raymond Ouellette -- Édité et transmis avec des logiciels libres sous Linux !