mod_video_embed
This module, if activated, checks the pasted URLs in the create media / page dialog of the admin. It will show an embed option for Youtube and Vimeo URLs. It will also cleanup pasted embed code for these and other services.
When used in the Zotonic site, the {% media %} tag then displays the embed code.
This module is accompanies mod_oembed and can be used for integrating with services that do not have oEmbed support but do provide HTML embed-code functionality.