libavcodec/vc1.c:671: error: Uninitialized Value
  The value read from intra[_] was never initialized.

libavcodec/vc1.c:671:31: 
669.     } else if(count[idx] == 2) {
670.         int t1 = 0, t2 = 0;
671.         for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
                                   ^
672.         for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
673.         tx = (mvx[t1] + mvx[t2]) / 2;
