Video not displaying if it’s dynamically inserted using do_blocks()

The video is not displaying if I try to insert a video before my content as the code below.

function test( $content ) {
    $test = do_blocks( '
	<!-- wp:presto-player/reusable-display {"id":49} -->
        <div class="wp-block-presto-player-reusable-display"></div>
        <!-- /wp:presto-player/reusable-display -->
    ' );

    return $test . $content;
}

add_filter( 'the_content', 'test' );

After checking your code it seems that you are checking the presence of the block in the hasPlayer() function of the Scripts.php class.

You better enqueue scripts using block.json.