Hello

Im looking for someone to help me out creating a plugin or application for restricted access to videos published inside posts for certain groups. Meaning when :
a post contains text and photo attachments -> do nothing.
when a post contains text,attachments photos and attachment videos (avi,mp4,wmv,mpg,flv,swf and other videos extensions) -> restrict access only for video attachment (text and photos should remain visible as well for groups) and display a message : You are not allow to see this video.
Also i need to be able to select which groups should be able to see video attachments.