Thomas, the way you did it was the right way. T. Jackson's way will not work properly. You want a frame for frame conversion, and Cinema Tools does that. If you put the footage into a 60fps timeline, and slow it down, you get repeated frames. If you put the footage into a 30fps timeline, and slow it down...it is 30fps, but with repeated frames. That method does not do frame-for-frame conversion.
You did it right.
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