libavcodec/mpegvideo_enc.c:4233: error: Uninitialized Value
  The value read from temp[_] was never initialized.

libavcodec/mpegvideo_enc.c:4233:9: 
4231.         const int j = scantable[i];
4232.         const int perm_j = permutation[j];
4233.         block[perm_j] = temp[j];
              ^
4234.     }
4235. }
