EbmlList *seekhead_list = &matroska->seekhead;
int64_t before_pos = avio_tell(matroska->ctx->pb);
int i;
+ int nb_elem;
// we should not do any seeking in the streaming case
if (!matroska->ctx->pb->seekable ||
(matroska->ctx->flags & AVFMT_FLAG_IGNIDX))
return;
- for (i = 0; i < seekhead_list->nb_elem; i++) {
+ // do not read entries that are added while parsing seekhead entries
+ nb_elem = seekhead_list->nb_elem;
+
+ for (i = 0; i < nb_elem; i++) {
MatroskaSeekhead *seekhead = seekhead_list->elem;
if (seekhead[i].pos <= before_pos)
continue;