If this file is indeed the BBC Radio Drama, here is exactly what is happening in this specific episode to help you follow along.
Only play MP4 files using reputable media players (VLC Media Player, MPV). Never execute a downloaded program to "enable" a video. Ideally, obtain the episode via legal means (Amazon Prime Video). The Lord Of the Rings S01 - 07.mp4
The post-eruption look was based on real-world reference photos of the 2020 Oregon wildfires If this file is indeed the BBC Radio