i want to create an external video widget with iAd. I followed the steps and copied the Url and paste it in the Video pop-up menu in the Properties section of the inspector. When i select 'preview' the video doesn't play and the Url that i pasted is gone.

May have something to do with whether or not the URL can be reached while building your widget. I've got a video on the web. When I enter the URL into the field for the video object and click to another field, the URL is replaced with some text indicating that it is accessing the video then updates itself to displaying just the name of the video file.

It shows just fine in preview and I can see the full path to the video when I export the widget so it should work for you.

Is the video accessible from your Mac while you're laying out your widget?

-Mark

Ah... YouTube URLs typically have all sorts of redirecting they do on the back end based on your browser type etc. Inspect the results of the URL in Safari Web Inspector for the actual path to the video.

-M