I set the almost 6-yr-old MBP a major task: create a DL DVD of an already PAL-encoded version of the same video using the Professional standards setting in iDVD. This was complicated my my use of the Mac in a vertical dock connected to an ext monitor - the DVD drive doesn't work well in that10 orientation. The Apple USB SuperDrive was already in use on the MBA so I used a Sony USB DL DVD burner for the job. It took a shade under 10 hours to do that job.

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