qual to 1 specifies that minutes_value and hours_flag are present when full_timestamp_flag is equal to 0 and seconds fl is equal to 1. minutes_flag equal to 0 specifies that minutes_value and hours_flag are not present. minutes_value specifies the value of mM used to compute clockTimestamp. The value of minutes_valu shall be in the range of 0 to 59, inclusive. When minutes_value is not present, the previous minutes_value in decoding order shall be used as mM to compute clockTimestamp. hours_flag equal to 1 specifies that hours_valu is present when full_timestamp_flag is equal to 0 and seconds_flag is equal to 1 and minutes_flag is equal to 1. hours_value specifies the value of hH used to compute clockTimestamp. The value of hours_value shall be in the range of 0 to 23, inclusive. When hours_value is not present, the previous hours_value in decoding order shall be used as hH to compute clockTimestamp. time_offset specifies the value of tOffset used to compute clockTimestamp. The number of bits used to represent time_offset shall be equal to time_offset_length. When time_offset is not present, the value 0 shall be used as tOffset to compute clockTimestamp. D.2.3 Pan-scan rectangle SEI message semantics The pan-scan rectangle SEI message syntax elements specify the coordinates of a rectangle relative to the cropping rectangle of the sequence parameter set. Each coordinate of this rectangle is specified in units of one-sixteenth sample spacing relative to the luma sampling grid. pan_scan_rect_id contains an identifying number that may be used to identify the purpose of the pan-scan rectangle (for example, to identify the rectangle as the area to be shown on a particular display device or as the area that contains a particular actor in the scene). The value of pan_scan_rect_id shall be in the range of 0 to 232 - 2, inclusive. Values of pan_scan_rect_id from 0 to 255 and from 512 to 231 - 1 may be used as determined by the application. Values of pan_scan_rect_id from 256 to 511 and from 231 to 232 - 2 are reserved for 