CONSTRAINED_INTRA_PRED_FLAG
#define CONSTRAINED_INTRA_PRED_FLAG BW_FIELD(175, 1)
#define CONSTRAINED_INTRA_PRED_FLAG BW_FIELD(170, 1)
#define CONSTRAINED_INTRA_PRED_FLAG BW_FIELD(143, 1)
#define CONSTRAINED_INTRA_PRED_FLAG BW_FIELD(160, 1)