libavcodec/dv.c:544: error: Uninitialized Value
  The value read from is_field_mode[_] was never initialized.

libavcodec/dv.c:544:75: 
542.             } else {
543.                   y_stride = (mb_y == 134) ? (1 << log2_blocksize) :
544.                                              s->picture.linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
                                                                               ^
545.                   linesize = s->picture.linesize[j] << is_field_mode[mb_index];
546.                   (mb++)->    idct_put(c_ptr           , linesize, block); block += 64;
