If i wanna post a youttube video as a comment i can do this with [video][/video]
but can i controll somehow the width and height?

And second problem i have with the music player. I click on the top admin bar "Builder" -> Enable builder" -> Then Add a new block - > click the blue wheel - > widgets - > simple player -> select song/color/options -> click builder save changes.
But if i hit play nothing happens