This is a unique feature that only Canon offers in the consumer camcorder market. You would otherwise have to look to professional video cameras in order to have this sophisticated tool at your command. In addition to the standard interlaced video frame rate of 60i, you may choose to set the VIXIA HV30 to capture video in 30p which is (30 progressive frames) particularly useful for footage to be used on the Internet. In addition, this setting gives enhanced quality to still images captured after recording. Excellent for action shots and sports.