Custom code to display the liked media in the BuddyPress activity when other user liked it.

functions.php

<?php
/**
* rtMedia creates activity post if someone likes the media.
* If anyone wants to display the liked media along with the activity post as well then here is the custom code.
* Thanks to community contributor Ignacio_Duran_Sanz for this.
* You can add this code your theme's functions.php file.
*/

// Adding mediato activity when someone likes it

function rtm_bp_like_activity_action_insert_thumbnail_photo($action, $media_id, $user_id ) {

$activity = new RTMediaActivity( $media_id );
$action .= $activity->create_activity_html();
return $action;
}

add_filter('rtm_bp_like_activity_action', 'rtm_bp_like_activity_action_insert_thumbnail_photo', 10, 3);