Hi, I just upgraded LibreOffice from 4.2.X.X to 4.3.1.2 on Ubuntu 14.04.
I opened an old presentation of mine containing some mp4 videos. Before the upgrade, LibreOffice Impress happily played the videos in presentation mode. Now there is only a grey box with a speaker sign and that’s it. How do I get LibreOffice to play the videos again?