How can I change Max Embed Size in WordPress 3.5?

2 comments

1. See the function wp_embed_defaults() in wp-includes/media.php:

   function wp_embed_defaults() {
       if ( ! empty( $GLOBALS['content_width'] ) )
           $width = (int) $GLOBALS['content_width'];
   
       if ( empty( $width ) )
           $width = 500;
   
       $height = min( ceil( $width * 1.5 ), 1000 );
   
       return apply_filters( 'embed_defaults', compact( 'width', 'height' ) );
   }
   

   To change these values filter embed_defaults:

   add_filter( 'embed_defaults', 'wpse_76102_new_embed_size' );
   
   function wpse_76102_new_embed_size()
   {
       // adjust these pixel values to your needs
       return array( 'width' => 1000, 'height' => 600 );
   }
   

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2. This worked for me from http://www.wpbeginner.com/wp-themes/how-to-set-oembed-max-width-in-wordpress-3-5-with-content_width/

   Add the below to functions.php

   if ( ! isset( $content_width ) ) $content_width = 600;
   

   Then had to go in and re-save the post to make it work.

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