I just recently received my My Cloud and after fixing the incompatibility I was getting from Streaming via DLNA to my Sharp Aquos Tv, I have found that Mpeg2 and Mp4 are acceptable options to my TV.
I converted all of my movies to MP4, but run into an issue now where after about an hour of play time (sometimes 1:07, 1:08, 1:14) the movie with freeze and the only way to get it to do anything is to exit the movie and try again, but they NEVER go any further than the ~1 hour mark. The Mpeg format works just fine, except my tv wont allow any kind of playback controls with it. I like being able to pause my movies so I would like to get the MP4 version working. Any help would be appreciated.