Erick Hitter

Oomph, Inc.

Allows users to point WordPress objects (posts, pages, custom post types) to a URL of their choosing, which is particularly useful for injecting non-WordPress content into loops. The object appears normally in any loop output, but visitors to the object will be redirected to the specified URL. The plugin also allows you to choose the type of redirect, either temporary (302), or permanent (301).
Through a filter, the External Permalinks Redux meta box can easily be added to custom post types. There is also a function available for use with WordPress’ <code>add_meta_box</code> function.
This plugin was originally written for use on WordPress.com VIP. It is inspired by and backwards-compatible with Mark Jaquith’s Page Links To plugin, meaning users can switch between plugins without risk of losing any existing external links.
This plugin is translation-ready.

External Permalinks Redux

Allows you to point WordPress objects (posts, pages, custom post types) to a URL of your choosing.

Antonio Lamorgese

Auto Replace Broken Links For Youtube monitors and checks all broken or unreachable Youtube video links on your website. Automatically replaces all YouTube video links by restoring them to improve SEO and user experience. 
Once installed, the plugin, while viewing a post, will start analyzing the content and looking for any broken YouTube video links. Once the analysis is finished, the plugin will start checking each link to verify its validity. 
Broken links, if detected, will be replaced with other youtube links, searched independently, based on the key phrase of the post. This is to prevent search engines from penalizing your content. The plugin will send an email to the administrator to notify the result of the operation. All Plugin activity is performed in asynchronous mode.
<h3>Support</h3>
Please submit bugs, patches, and feature requests to:
[https://github.com/antoniolamorgese/auto-replace-broken-links-for-youtube]

Auto Replace Broken Links For Youtube

Auto Replace Broken Links For Youtube automatically replaces all broken or invalid YouTube video links in your posts to improve SEO and always ensure  …

External Permalinks Redux vs Auto Replace Broken Links For Youtube