constraint_set_flags |= get_bits1(&h->gb) << 3; // constraint_set3_flag
constraint_set_flags |= get_bits1(&h->gb) << 4; // constraint_set4_flag
constraint_set_flags |= get_bits1(&h->gb) << 5; // constraint_set5_flag
- get_bits(&h->gb, 2); // reserved
+ skip_bits(&h->gb, 2); // reserved_zero_2bits
level_idc = get_bits(&h->gb, 8);
sps_id = get_ue_golomb_31(&h->gb);