GBTimelapse can record live view images at a much faster rate than traditional image capture. Normal time-lapse captures full-sized still images at a mimimum interval of 2 seconds, but when viewing a camera's live-view GBTimelapse can capture images at intervals up to 10 frames per second. The images are not full-HD sized, but they are useful for time-lapse of people in motion.
The first five seconds of this clip is at 4 seconds per frame, and the last 25 seconds uses live view capture at 1/2 second per frame. You can see how much smoother people move in the live view segment.