Ive only done it once so far but it was easy. Just dragged the 200 gopro jpegs in a batch into the Time-lapse window and it created the video. Very smooth.
It made a .mov video and I was then able to import that file into iMovie and edit it as a normal movie. It was a cloud sequence set on an interval of once every 60 secs.
Im very happy with Time-Lapse so far. No problems.
El Veegee about Time-Lapse