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<p>I was wondering how I can use this software to use motion (.mpg and .mp4 h.264 files) backgrounds for the worship service. I have VLC installed on my Mac but it does not show up in (preferences, media). The only Media Players are WebKit and Phonon. </p><p>Whenever I try to click on the video in the media tab and click "replace live background" it says file format not supported. How would I get this to work?? Thanks a lot.</p>