Vizio costar mediatomb video loads but does not play

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http://askubuntu.com – I setup MediaTomb on 12.04 to stream videos using these inst The Vizio costar I am using as the player sees the server, and starts to load the MP4 video. The video however does not play, the player just exits after a few seconds. There is no mention of errors in the media tomb log. Update- I installed VLC to test the server and it works fine. Perhaps I need a different video server for the costar. I also tested the video by playing it via usb thumbdrive. (HowTos)