@samliew Thank you so much for your help!
@matt-hew It seems that you combined the scripts.
Simply separate:
<script>
$(document).ready(function() {
$('#fullpage').fullpage({
scrollingSpeed: 1000,
navigation: true,
slidesNavigation: true,
});
});
</script>
AND
<script>
$(document).ready(function() {
$('video').each((i,v) => { $(v).attr('data-keepplaying', ''); v.play(); });
$('#fullpage').fullpage();
});
</script>
This is how it worked for me. Hope it helps.