libavcodec/mpegvideo_enc.c:1957: error: Uninitialized Value
  The value read from skip_dct[_] was never initialized.

libavcodec/mpegvideo_enc.c:1957:14: 
1955.         if (!skip_dct[0])
1956.             get_visual_weight(weight[0], ptr_y                 , wrap_y);
1957.         if (!skip_dct[1])
                   ^
1958.             get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
1959.         if (!skip_dct[2])
