I had a similar problem after going from 1.3 to 1.4
I have 2 Samsung TVs - A UA55D8000 and a UA32ES5500. (so a D series and an E series)
Neither will see my video files unless I tell Serviio that they are both "Samsung TV (A-series)" in the Renderer profile under the status tab in the console.
Under v1.3 i had he appropriate profile for each TV selected and that worked fine, but seems broken in 1.4

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