MPEG2 Picture header

picture_start_code

temporal_reference

picture_coding_type

vbv_delay

if(picture_coding_type == 2 || picture_coding_type == 3) {

full_pel_forward_vector

forward_f_code

}

if(picture_coding_type == 3) {

full_pel_backward_vector

backward_f_code

}

while ( nextbits() == '1') {

extra_bit_picture /* with the value "1" */

extra_information_picture

}

extra_bit_picture /* with the value "0" */

next_start_code()
}