int64_t pts;
if (i < 0) continue;
pts = ogg_calc_pts(s, i, NULL);
+ if (s->streams[i]->duration == AV_NOPTS_VALUE)
+ continue;
if (pts != AV_NOPTS_VALUE && s->streams[i]->start_time == AV_NOPTS_VALUE && !ogg->streams[i].got_start) {
s->streams[i]->duration -= pts;
ogg->streams[i].got_start= 1;