libavcodec/mpegvideo.c:841: error: Uninitialized Value
  The value read from mv_table_size was never initialized.

libavcodec/mpegvideo.c:841:21: 
839.                                       mb_array_size * 2 * sizeof(uint8_t),
840.                                       fail);
841.                     FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j],
                         ^
842.                                       mv_table_size * 2 * sizeof(int16_t),
843.                                       fail);
