For instance this is the site
http://mynetwork.com/content/53e46ec40f5777dde2d8210d2953d92f/487cf467/visual/vid/c/c/cc03-883-04/cc03-883-04_full.wmvHow can i make the old video url work again if the file is still on the website? It changes every day.?If and only if the file is still on the website do this:
get the new file name of the particular video and add it in your url. thats it
but if its not on the website then sorry to say.. i can be off much help