libavcodec/h264_direct.c:209: error: Uninitialized Value
  The value read from mv[_] was never initialized.

libavcodec/h264_direct.c:209:10: 
207.     }
208. 
209.     if(!(is_b8x8|mv[0]|mv[1])){
              ^
210.         fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
211.         fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
