if( ! function_exists( 'videotube_pre_get_author_posts' ) ){
    /**
     * Filter the channel posts
     *
     * @param $query
     */
    function videotube_pre_get_author_posts( $query ) {
        if( $query->is_main_query() && $query->is_author ){
            $query->set( 'post_type', array( 'video', 'post' ) );
        }
    }
    add_action( 'pre_get_posts' , 'videotube_pre_get_author_posts', 100, 1 );
}