Works for me with presentation version 2.0 and includes desktop sharing

[hd42]

I saw your great script but had to adapt it in some places to work with our version of BBB (different link format). I also included code to copy the desktop sharing video in. I know this pull request will probably break the code working for your version of BBB, but maybe it contains some useful parts for other users. I noticed some problems when I quickly skipped through slides, because then the duration was shorter than one second and no video was created by the loop.