They seem to use MPEG-DASH, which shows as a series of MP4 files each returning 206 Partial Content. I tried https://github.com/emarsden/dash-mpd-cli to download it using the MPD XML file, which you can find by filtering for “master” in your browsers network log. But that didn’t work. Still, you might want to spend more time on it than I have at the moment.
They seem to use MPEG-DASH, which shows as a series of MP4 files each returning 206 Partial Content. I tried https://github.com/emarsden/dash-mpd-cli to download it using the MPD XML file, which you can find by filtering for “master” in your browsers network log. But that didn’t work. Still, you might want to spend more time on it than I have at the moment.