[FFmpeg-devel] [PATCH v2 1/2] avformat/hlsenc: check discont_program_date_time before use it in parse_playlist

[Steven Liu]

In parse_playlist, the discont_program_date_time should be used after
EXT-X-PROGRAM-DATE-TIME tag parsed.

Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
---
 libavformat/hlsenc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index d2b8215dff..b9f79e30d8 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -1288,8 +1288,10 @@ static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs
                 new_start_pos = avio_tell(vs->avf->pb);
                 vs->size = new_start_pos - vs->start_pos;
                 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
-                vs->last_segment->discont_program_date_time = discont_program_date_time;
-                discont_program_date_time += vs->duration;
+                if (discont_program_date_time) {
+                    vs->last_segment->discont_program_date_time = discont_program_date_time;
+                    discont_program_date_time += vs->duration;
+                }
                 if (ret < 0)
                     goto fail;
                 vs->start_pos = new_start_pos;
-- 
2.34.1