libavcodec/mpegvideo_enc.c:2958: error: Uninitialized Value
  The value read from best_s.qscale was never initialized.

libavcodec/mpegvideo_enc.c:2958:17: 
2956.                 }
2957. 
2958.                 s->current_picture.qscale_table[xy] = best_s.qscale;
                      ^
2959. 
2960.                 copy_context_after_encode(s, &best_s, -1);
