To save an animated sequence in QuickTime Movie (.mov) or .avi format, choose File > Export Movie. Both formats are saved to play back at 6 frames per second (166 ms/frame), which is one-quarter the speed of standard television programs and films. This speed was chosen because it is optimal for viewing Motion Library files, most of which are 10-30 frames in length.
To save as an animated .gif choose File > Export Image. Animated .gifs are exported with a frame rate of 10 milliseconds/frame.
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