looks moved despite the limitation in frame rates to do this each signal was split in to two fields an on field and an even field
each field was recorded or this played every 160 at the second unfortunately this means that when working with this kinda footage in an editing system it can be difficult to deal accurate frame by frame enits since each frame is relly two fields video
taken at separate times in addition this also means that playing in terlaced footage on progressive screens like lcd's in plasmas