libavcodec/h264_direct.c:416: error: Uninitialized Value
  The value read from mv[_] was never initialized.

libavcodec/h264_direct.c:416:13: 
414. 
415.             fill_rectangle(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, mv[0], 4);
416.             fill_rectangle(&sl->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, mv[1], 4);
                 ^
417.             fill_rectangle(&sl->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
418.                            (uint8_t)ref[0], 1);
