Video not playing in LibreOffice Impress

Using Ubuntu 18.04.4 and LibreOffice Impress 6.0.7.3

When I insert an mp4 video in the slide only a screenshot of the video appears and I am not able to play it. How do I play mp4 videos in LibreOffice Impress presentations?

I have not found a solution for mp4 video. But as described in this article LibreOffice support Ogg Vorbis video format. After the conversion of mp4 video to ogg format and subsequent insertion the converted video files seem to be working.

To convert mp4 to ogg I used FFmpeg:

ffmpeg -i input.mp4 \
       -c:v libtheora -qscale:v 6 -c:a libvorbis -qscale:a 5 \
       output.ogv