--- a/libavformat/dashdec.c +++ b/libavformat/dashdec.c @@ -1401,6 +1401,8 @@ static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls) } else { num = pls->first_seq_no + (((c->publish_time - c->time_shift_buffer_depth + pls->fragment_duration) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration; } + } else if (c->period_start && c->availability_start_time && pls->fragment_timescale) { + num = pls->first_seq_no + (((get_current_time_in_sec() - (c->availability_start_time + c->period_start)) * pls->fragment_timescale) - pls->fragment_duration) / pls->fragment_duration; } else { num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration; }