Strictly speaking, this is not a role-play background. The aim of the video is to set the scene for students to give a speech or talk.
If you are planning to ask your students to speak about a topic they have prepared, this background brings a TED-style atmosphere into the classroom, complete with an audience that reacts from time to time.
How to use
Give your students a prompt and ask them to prepare a brief outline of what they want to say. They may take their notes onto the “stage”, but they should use them only to organise their ideas—not read from them.
Then have them deliver their talk with their backs to the screen, facing their classmates.
They have four minutes. Their time is up when the lights dim and the audience begins to applaud.