Please change record length to equal actual motion sensing length. Have user settable to stop recording after x seconds of no motion detected.
eg. if it takes 2 min to come up driveway and person to get out of car walk up to door then record 2 min. If it takes 20 sec to drive up and person talks on phone for 30 sec and then gets out then record 20sec. Then new recording upon new motion for 30 sec.