I believe part of what you’re looking for is the WP_Embed class defined in wp-includes/media.php. It implements a framework for automatically replacing urls with the output of embed handlers. I’m afraid you’ll have to do the deeper research yourself (this was apparently introduces in 2.9.0, so documentation might still be thin). I doubt WordPress core … Read more
You could try mashing all the patterns together in one big regexp or and then doing a simple line by line parse of the content: function theme_oembed_videos() { global $post; if ( $post && $post->post_content ) { global $shortcode_tags; // Make a copy of global shortcode tags – we’ll temporarily overwrite it. $theme_shortcode_tags = $shortcode_tags; … Read more
Simply put ‘); But note that there is also caching involved (embedding results are saved to custom field of the post, otherwise it would need to make HTTP request every time) and you are likely breaking that, unless you are doing it inside loop and close to where it normally works. Maybe even then.
Not natively. You’d have to write some code to make it happen – there’s a nice pastebin function that provide the necessary code to do it. Edit (12/19/2011): Yep here’s how you can do this programmatically. Add the following two functions to your functions.php file and you should be good to go. The code has … Read more
You can use the oEmbed functionality baked into WordPress. Typically any video host on this list will return a thumbnail to you using oembed. Here is a list of default providers that WordPress uses for auto embedding in the content area. I’ve included non-video sources as well for the convenience of others. http://www.youtube.com/oembed http://blip.tv/oembed/ http://vimeo.com/api/oembed.xml … Read more