av_log(s->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
ref = 0;
}
+ if ((h->ref_list[0][ref].f.reference&3) != 3) {
+ av_log(s->avctx, AV_LOG_DEBUG, "Reference invalid\n");
+ return;
+ }
fill_rectangle(&s->current_picture.f.ref_index[0][4 * h->mb_xy],
2, 2, 2, ref, 1);
fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);