I’ve ran into the same problem. Just one DVCPro HD 1080i60 clip with no filters or time remapping applied. Select clip and send to Motion. In Motion I change from Constant Speed to Variable speed and the clip disappears. Change back to Constant Speed and the clip re-appears. If I import the same clip directly into Motion then it works like a champ. I have no idea as to what is causing that. The Set Speed behavior is awesome and works either way.
Stephen Smith
Utah Video Productions
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