[FFmpeg-devel] [PATCH] avformat/hlsenc: compute segment duration use current pts minus last segment end pts

[Steven Liu]

segment duration is using vs duration which compute by frame per second,
that can not fix problem of VFR video stream, so compute the duration
when split the segment, set the segment target duration use
current packet pts minus the prev segment end pts and plus current
packet's duration.

Reported-by: Zhao Jun <barryjzhao at tencent.com>
Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
---
 libavformat/hlsenc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index d75684741f..9e8b34d83c 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -2460,7 +2460,8 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
         }
 
         if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
-            ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
+            double cur_duration =  (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den + vs->dpp;
+            ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
             vs->end_pts = pkt->pts;
             vs->duration = 0;
             if (ret < 0) {
-- 
2.25.0