MS Bot Framework VideoCard
问题 Can someone please explain how you use the MediaUrl for the VideoCard? I've tried just adding the video url to the CardMedia which loads the media player but I can't play the video. And whatever I try with MediaUrl I just get an error saying MediaUrl is not a funtion. var url = new MediaUrl("Test", "https://www.youtube.com/watch?v=0i4v0Texqco"); var vid = new builder.Message(session) .textFormat(builder.TextFormat.xml) .attachments([ new builder.MediaCard(session) .title("Test title") .media(