Who knew that Youtube adds automatic subtitles using voice recognition? Also, as one might expect, when it listens to Welsh and tries to transcribe it, thinking it's actually English, the result is gibberish. Anyway, it's OK now.
It had better not try to add them back.
I have a lot to learn with video editing, but one important thing I've discovered is how few words you can fit into a voice over without holding a static shot for a ridiculously long time and being boring. All the research I did about the town prisons had to be left out. On the other hand, adding music to video of someone walking down a path makes it much more appealing.
With luck another day's work will finish Episode 1 and then I can plan where to explore next.