libavcodec/dv.c:538: error: Uninitialized Value
  The value read from is_field_mode[_] was never initialized.

libavcodec/dv.c:538:73: 
536.             } else {
537.                   y_stride = (mb_y == 134) ? (1<<log2_blocksize) :
538.                                              s->picture.linesize[j]<<((!is_field_mode[mb_index])*log2_blocksize);
                                                                             ^
539.                   for (i=0; i<(1<<(s->sys->bpm==8)); i++, block += 64, mb++, c_ptr += y_stride)
540.                        mb->idct_put(c_ptr, s->picture.linesize[j]<<is_field_mode[mb_index], block);
