No funcion un streaming m3u8

Hola, exoplayer, estoy haciendo el tutorial, y quiero reproducir un video streaming con formato m3u8, y al correr la aplicacion, genera un error y se cierra la app

val mediaItem = MediaItem.Builder()
.setUri(getString(R.string.media_url_m3ub))
.setMimeType(MimeTypes.BASE_TYPE_VIDEO)
.build()

Start with the MediaItem.Builder code in the issue and run the codelab app while capturing the error that causes it to close. Confirm the media_url_m3ub value and MIME type used for the m3u8 stream; done means the stream plays without the application closing.

Written by the indexing model from the issue text.