I have just installed Serviio plus the plugins package. I am using it with my Ellion HMR-600 mediaserver and it works fine for local content. The Ellion plays just about all formats, by the way, so transcoding isn't needed. First of all, the YouTube plugin doesn't seem to work.
When I add RSS feeds from the Danish national TV, DR1, no files are shown (just the folder), even though the media files are clearly listed in the XML file as MP4 files. Why cannot Serviio see those? Examples are found at http://www.dr.dk/podcast/Video. For Danish TV2 I do get a list of broadcasts, but they are all the same and are played with sound only. I used this feed: http://nyhederne.tv2.dk/rss/nyhederne_p ... /index.xml.
In the plugin implementation guide I read: "For each feed which needs a plugin Serviio tries to match all available plugins to the feed's URL by calling this method and uses the first plugin that returns true." That does not sound like a good method to pick the correct plugin.
Online feeds are really the only things I need Serviio for, as the Ellion box can access the local content on my PC directly via Samba. I would guess that this is true for lots of mediaplayer boxes. So, the focus of mediaserver programs should be online content. IMHO there are no good mediaservers for online content yet. I have tried 5 or 6 so far. The one that works best is PlayOn, but it is not free. Perhaps Serviio can be improved, so that it can compete? I hope so.