The Intensity Shuttle is ancient and even behind the times when it was introduced. It can't even do 1080p 60. It's useless.
It can't do a 2400 X 1180 aspect ration either. It only works with broadcast compliant frame rates, aspect ratios and resolutions. 1920 X 1080 P60 is not broadcast complaint. You can broadcast at 1280 X 720 P60. Most TV shows are broadcasted at 1080i. The Intensity Shuttle Works great with Premiere Pro for previewing interlaced timelines. With Premiere Pro I can get it to work with any frame rate, aspect ratio and resolution. FCPX does not have the export options that Premiere Pro has as seen in the video below.
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