Can't import video asset

make a variable “media player” “if its a intro video” get a refrence of media player extract a node link it with"open source" choose the video in the source drop down menu. execute opensource by event begin play "

Hello,
I have imported and converted the video to MP4 with the MEPG4 codec, but it still doesn’t work.
I think there is a big issue in UE5 with videos imports…
Don’t you guys think?