A possible concise summary is:
The video transcript is about the author's experience of watching a stage play based on his own video where he rewrote the plot of Harry Potter and the Cursed Child. He interviews the writer and some of the actors of the play, and expresses his admiration and surprise at their work. He also promotes Squarespace as a sponsor and takes a quiz to find out his Hogwarts house.
Some possible facts extracted from the text are:
1. The text is a transcript of a video by Austin McConnell about a Harry Potter fan play.
2. The fan play is called 19 Years Later and it is based on Austin's rewrite of Harry Potter and the Cursed Child.
3. The fan play was written by Kenna, who emailed Austin for permission and invited him to see the show in Los Angeles.
4. The fan play was accepted by the Hollywood Fringe Festival and had sold out performances.
5. The fan play had a rotating cast of actors, some of whom were interviewed by Austin, such as Connor who played Scorpius and Boris who played Albus.
6. Austin was impressed by the fan play and encouraged other fans to create their own stories and websites using Squarespace, the sponsor of his video.
7. At the end of the video, Austin took a quiz to join his Hogwarts house and got sorted into Gryffindor.