@@ -87,6 +87,7 @@ typedef struct SegmentContext {
int64_t last_val; ///< remember last time for wrap around detection
int cut_pending;
int header_written; ///< whether we've already called avformat_write_header
+ int64_t start_pts; ///< pts of the very first packet processed, used to compute correct segment length
char *entry_prefix; ///< prefix to add to list entry filenames
int list_type; ///< set the list type
@@ -702,6 +703,7 @@ static int seg_init(AVFormatContext *s)
if ((ret = parse_frames(s, &seg->frames, &seg->nb_frames, seg->frames_str)) < 0)
return ret;
} else {
+ seg->start_pts = AV_NOPTS_VALUE;
/* set default value if not specified */
if (!seg->time_str)
seg->time_str = av_strdup("2");
@@ -914,7 +916,15 @@ calc_times:
seg->cut_pending = 1;
seg->last_val = wrapped_val;
} else {
- end_pts = seg->time * (seg->segment_count + 1);
+ if (seg->start_pts != AV_NOPTS_VALUE) {
+ end_pts = seg->start_pts + seg->time * (seg->segment_count + 1);
+ } else if (pkt->stream_index == seg->reference_stream_index && pkt->pts != AV_NOPTS_VALUE) {
+ // this is the first packet of the reference stream we see, initialize start point
+ seg->start_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
+ seg->cur_entry.start_time = (double)pkt->pts * av_q2d(st->time_base);
+ seg->cur_entry.start_pts = seg->start_pts;
+ end_pts = seg->start_pts + seg->time * (seg->segment_count + 1);
+ }
}
}