For me the same problem as Gasper described. My system: LO 6.1.5.2 on Ubuntu 18.04. After installing gstreamer1.0-gtk3 the problem is solved.
For me the same problem as Gasper described. My system: LO 6.1.5.2 on Ubuntu 18.04.
After installing gstreamer1.0-gtk3 the problem is solved.