Srivener for Windows can not play video files

I have already written to the support several times, but unfortunately nobody answers. Therefore I try my luck here in the forum. The software “Scrivener for Windows” can not play video files within Srivener. The video is played the first time, but a second or third video is no longer played, even the first video is not played the second time. only the sound is played.

Friendly greetings from Germany: