libavcodec/h263.c:4969: error: Uninitialized Value
  The value read from dc_pred_dir was never initialized.

libavcodec/h263.c:4969:9: 
4967.         }
4968. 
4969.         mpeg4_pred_ac(s, block, n, dc_pred_dir);
              ^
4970.         if (s->ac_pred) {
4971.             i = 63; /* XXX: not optimal */
