#34: $type_send_to_editor_url

type_send_to_editor_url.php

<?php
/**
 * Add data-type attribute to video links sent to the editor
 *
 * @param string $html The link HTML sent to the editor.
 * @param string $src The media item source URL.
 * @param string $title The media item title.
 *
 * @return string The link embed HTML markup.
 */
function wpdocs_video_link_data_type( $html, $src, $title ) {
	// Since the 'type' is defined in the filter hook, we know the type is video
	return '<a href="' . esc_url( $src ) . '" data-type="video">' . $title . '</a>';
}
add_filter( 'video_send_to_editor_url', 'wpdocs_video_link_data_type', 10, 3 );