We have made a signal converter which converts interlaced telecine video to progressive video signal on an experimental basis. There were reports of same kind of telecine video converters using a method of detecting pull-down sequence from input video. But, this method has a problem that detection of pull-down sequence may mistaken when sequence of same images are input. This paper reports about a new method for the interlaced telecine video converter which uses timecode to lock to pull-down sequence.