I created a mkv file from a bluray i would like to put in iTunes to view on my iPad and iPhone. Because there is the option to create a 5.1 surround audio track and a Stereo track. I let iVI create both. Because my surround sound is connected to my iMac (Thunderbolt ==> HDMI from AV Receiver). But when the encode is done (I used the Apple TV 2 pre-settings) the stereo audio is playing fine, when I switch it to Surround Audio the movie stops playing and won't continue unless I switch it back to Stereo audio. I tried playing the movie on surround sound with VLC and it worked fine. Is this a bug or can am I doing something wrong?