Divi Builder: transformation from https to httpv in video module

Hi,
I tried the solution like in https://ww.wp.xz.cn/support/topic/divi-an-wp-youtube-lyte/. I used a video module and there transformed the https to httpv. Now the video cannot be played anymore. It shows a box saying like “No video with supported format and MIME-type found”. (in German it says “Kein Video mit unterstütztem Format und MIME-Typ gefunden”).
Any ideas?
Thanks!