1. <?php
  2. function responsive_embed($content){
  3. $content = str_replace('<iframe', '<div class="video-container"><iframe', $content);
  4. $content = str_replace('</iframe>', '</iframe></div>', $content);
  5. return $content;
  6. }
  7. add_filter('the_content', 'responsive_embed');
  8. add_filter('the_excerpt', 'responsive_embed');
  9. ?>