High bit-rate data and low bit-rate data for the same material are
recorded in time division. Meanwhile, the recorded low bit-rate data is
read out so as to be used for verification or time-shift playback. In a
time-shift playback process, a plurality of tags, each tag containing
low-resolution data, is read out at a time so that the read out
low-resolution data are played back within excessive time generated by
successively recording a plurality of cartons. For example, five cartons
corresponding to an input video signal for 10 seconds are successively
recorded. Within the resulting excessive time of 1.6 (=5.times.0.32)
seconds, five tag are successively read out so as to play back the
low-resolution data for the reproduction time of 10 seconds. The present
invention is applicable to a disc recorder.