MRSS feed doesn't validate for Direct Publisher

Ahh, I see the issue is with the media:content enclosure ,  so I'll need to process it to amend their default output.

Now the problem is JW Player uses 720px wide thumbnails and you need 800px. 

From your press release: http://www.businesswire.com/news/home/2 ... -Publisher  

"Roku Direct Publisher is also supported by top third-party OVPs, including Brightcove, JW Player, Kaltura and Ooyala"

Would such support be a payable service with JW then? Because it doesn't seem to be particularly out of the box. 

It looks like its working now with your feed.