All of this functionality works perfectly in the preview but when pushed to DFP and displayed on site, the video does not play and the clickthrough URL is replaced with a random doubleclick URL which leads to a blank page.
Click on the Delivery tab.
Click on Creative subtab on the left side.
Click on Add creatives button.
In the New creative popup, pick the Advertiser and click Continue
GWD creative zip can be uploaded as html5.
Click on HTML5 in the Creative: New creative.
Click on Upload button at HTML5 file and browser to the GWD published zip file.
When upload is successful, everything should be filled in correctly (Name, Size, Exit info).
Click Save and you should be taken to the Preview page and exit click through works fine.