During my tests concerning [Bug 32852] Only sound of movie played/ `GLIBCXX_3.4.11' not found with "LibreOffice 3.3.2RC1 – WIN7 Home Premium (64bit) German UI [OOO330m19 (Build:201 / tag 3.3.2.1)]" I saw that subtitles in the movie will not be shown. You will find in <https://bugs.freedesktop.org/show_bug.cgi?id=32852#c9> how to reproduce that problem and some more details.
I'm closing this bug as NOTABUG because the referenced bug has been marked as such. If this isn't the case please reopen it and provide more details about the issue. Thanks for reporting