static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit) { MpegTSContext *ts = s->priv_data; int64_t pos, timestamp; uint8_t buf[TS_PACKET_SIZE]; int pcr_l, pcr_pid = ((PESContext*)s->streams[stream_index]->priv_data)->pcr_pid; pos = ((*ppos + ts->raw_packet_size - 1 - ts->pos47) / ts->raw_packet_size) * ts->raw_packet_size + ts->pos47; while(pos < pos_limit) { avio_seek(s->pb, pos, SEEK_SET); if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE) return AV_NOPTS_VALUE; if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) && parse_pcr(&timestamp, &pcr_l, buf) == 0) { *ppos = pos; return timestamp; } pos += ts->raw_packet_size; } return AV_NOPTS_VALUE; }