The actual video is exported from Golly using a custom Python script: http://pastebin.com/8vVGCgKE (since Golly built-in only supports rendering the view with a scale which is a power of 2, for performance reasons – this is not a particularly well-optimised or fast script to run).
editor’s note: original quote contained a bad link to the Shepard Tone WP page, so I fixed it. All other quote content is directly from the YouTube video.
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