Hi there,
so a video post format, doesn’t generate an excerpt by default, as it relies on displaying the Content with its HTML intact so as the Video embed can be displayed.
You can tell GP to load an excerpt using this PHP Snippet:
add_filter( 'generate_show_excerpt', function( $show ) {
if ( 'video' === get_post_format() ) {
return true;
}
return $show;
} );
Reference: https://docs.generatepress.com/article/excerpt-issues/#full-post-content-displaying-while-using-excerpt
But this will treat it like any other post ie. a featured image and excerpt. Not a video thats within the content.
Does that work for you ? Or must the archive show the video embed before the excerpt ? ( as thats a lot more tricky )