Modified to use Youtube iframe for individual videos

// Filename: vipers-video-quicktags.php
// In function shortcode_youtube()
// Modified to use Youtube iframe for individual videos

    // Find this "Setup the parameters" in the funciton ...
    $rel        = ( 1 == $atts['rel'] ) ? '1' : '0';
    $fs         = ( 1 == $atts['fs'] ) ? '1' : '0';
    $showsearch = ( 1 == $atts['showsearch'] ) ? '1' : '0';
    $showinfo   = ( 1 == $atts['showinfo'] ) ? '1' : '0';

    // ADDED
    $iframeurl = 'http://www.youtube.com/embed/' . $videoid . '?feature=oembed';
    foreach ( array( 'fs', 'rel', 'showsearch', 'showinfo' ) as $attribute ) {
        $iframeurl = add_query_arg( $attribute, $$attribute, $iframeurl );
    }

    $objectid = $this->videoid('youtube');

    // Hack until this plugin properly supports iframe-based embeds
    if ( ! empty( $iframe ) ) {
        return '<iframe class="vvqbox vvqyoutube" width="' . esc_attr( $atts['width'] ) . '" height="' . esc_attr( $atts['height'] ) . '" src="'. esc_url( $iframe . '&rel=' . $rel . '&fs=' . $fs . '&showsearch=' . $showsearch . '&showinfo=' . $showinfo . $autoplay . $loop . $hd ) . '" frameborder="0" allowfullscreen></iframe>';
    }

    $this->swfobjects[$objectid] = array(
        'width' => $atts['width'],
        'height' => $atts['height'],
        'url' => 'http://www.youtube.com/' . $embedpath . $color1 . $color2 . $border . '&rel=' . $rel . '&fs=' . $fs . '&showsearch=' . $showsearch . '&showinfo=' . $showinfo . $autoplay . $loop . $hd,
    );

    // MODIFIED
    return '<span class="vvqbox vvqyoutube" style="width:' . $atts['width'] . 'px;"><span class="video-container"><iframe id="' . $objectid . '" src="' . esc_attr( $iframeurl ) . '" width="' . $atts['width'] . '" height="' . $atts['height'] . '" frameborder="0"><a href="' . $fallbacklink . '">' . $fallbackcontent . '</a></iframe></span></span>';
}