libavcodec/h264_direct.c:343: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:343:17: 
341.                 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4);
342.                 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
343.                 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
                     ^
344. 
345.                 assert(b8_stride==2);
