No idea. In this case I posted the link for those who, like me, dislike distracting multimedia tricks in what ought to be a straightforwardly scrollable news article.
curl https://rnz.shorthandstories.com/yoghurt-mafia/embed.js \
|sed 's/<em>//g;s/<\/em>//g'|tr -cd '[ -~]'|grep -Eo '(<p c.{10}[^>]*>)|(https://[^ ]*.jpeg)' \
|uniq|sed '/^https.*jpeg$/s/.*/<li><a href=&>&<\/a><\/li>/g' >1.htm;
firefox ./1.htm tmp=$(mktemp).htm; curl https://rnz.shorthandstories.com/yoghurt-mafia/embed.js \
| sed 's/<em>//g;s/<\/em>//g'| tr -cd '[ -~]'|grep -Eo '(<p c.{10}[^>]*>)|(https://[^ ]*.jpeg)' \
| uniq | sed '/^https.*jpeg$/s/.*/<li><a href=&>&<\/a><\/li>/g' > $tmp;
open -a Firefox $tmp