static int ism_write_packet(AVFormatContext *s, AVPacket *pkt) { SmoothStreamingContext *c = s->priv_data; AVStream *st = s->streams[pkt->stream_index]; OutputStream *os = &c->streams[pkt->stream_index]; int64_t end_dts = (c->nb_fragments + 1) * c->min_frag_duration; int ret; if (st->first_dts == AV_NOPTS_VALUE) st->first_dts = pkt->dts; if ((!c->has_video || st->codec->codec_type == AVMEDIA_TYPE_VIDEO) && av_compare_ts(pkt->dts - st->first_dts, st->time_base, end_dts, AV_TIME_BASE_Q) >= 0 && pkt->flags & AV_PKT_FLAG_KEY && os->packets_written) { if ((ret = ism_flush(s, 0)) < 0) return ret; c->nb_fragments++; } os->packets_written++; return ff_write_chained(os->ctx, 0, pkt, s); }