这就是我精心设计来覆盖默认值的内容，我设置了默认的媒体宽度，选择纵横比（16:9），然后替换视频短码输出。

$defaultMediaWidth = 960;

if ( ! isset( $content_width ) ) {
  $content_width = $defaultMediaWidth;
}
add_filter( \'embed_defaults\', \'bigger_embed_size\');

function bigger_embed_size()
{
  global $content_width;
  $width = $content_width;
  // aspect ratio 16:9
  $r1 = 16;
  $r2 = 9;
  $r = $width / $r1;
  $height = $r * $r2;

  return array( \'width\' => $width, \'height\' => $height );
}

function EMP_video_shortcode_override(
  $output = \'\',
  $atts = [],
  $video = \'\',
  $post_id = 0,
  $library = \'\'
){
  $defaults = wp_embed_defaults();
  $searchfor = [
    \'width="\' . $atts[\'width\'] . \'"\',
    \'width: \' . $atts[\'width\'] . \'px;\',
    \'height="\' . $atts[\'height\'] . \'"\'
  ];
  $replaceto = [
    \'width="\' . $defaults[\'width\'] . \'"\',
    \'width:\' . $defaults[\'width\'] . \'px;\',
    \'height="\' . $defaults[\'height\'] . \'"\'
  ];
  return str_ireplace( $searchfor, $replaceto, $output );
}
add_filter(\'wp_video_shortcode\', \'EMP_video_shortcode_override\', 10 , 5);