I’ve just installed LibreOffice in order to make a presentation that has several videos. I have converted them all to .avi. They load and display stills in the slide editor, and if I click on the video and use the media playback, they play fine. As soon as I run the slideshow for real, however (with F5) the videos all present a black rectangle. The sound is intact.
I can’t find any setting that lets me change the video player used, but it seems suspicious that Impress can play the videos properly in one context but not the other.
If I use open office impress the create a presentation, the videos play fine.
OS is Windows 10
Version of LOI is latest: 220.127.116.11 (x64)