libavcodec/h264_direct.c:408: error: Uninitialized Value
  The value read from mv[_] was never initialized.

libavcodec/h264_direct.c:408:13: 
406. 
407.             fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, mv[0], 4);
408.             fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, mv[1], 4);
                 ^
409.             fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
410.                            (uint8_t)ref[0], 1);
