[FFmpeg-cvslog] avformat/hls: check segment duration value of EXTINF

[Steven Liu]

ffmpeg | branch: release/4.2 | Steven Liu <lq at chinaffmpeg.org> | Fri May 29 11:39:05 2020 +0800| [c00e881a450fc465e60f41bd47ea6396a87f3eef] | committer: Michael Niedermayer

avformat/hls: check segment duration value of EXTINF

fix ticket: 8673
set the default EXTINF duration to 1ms if duration is smaller than 1ms

Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
(cherry picked from commit 9dfb19baeb86a8bb02c53a441682c6e9a6e104cc)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c00e881a450fc465e60f41bd47ea6396a87f3eef
---

 libavformat/hls.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/libavformat/hls.c b/libavformat/hls.c
index 8c12fcef77..fb2af90b92 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -873,8 +873,6 @@ static int parse_playlist(HLSContext *c, const char *url,
                     ret = AVERROR(ENOMEM);
                     goto fail;
                 }
-                seg->duration = duration;
-                seg->key_type = key_type;
                 if (has_iv) {
                     memcpy(seg->iv, iv, sizeof(iv));
                 } else {
@@ -904,6 +902,13 @@ static int parse_playlist(HLSContext *c, const char *url,
                     goto fail;
                 }
 
+                if (duration < 0.001 * AV_TIME_BASE) {
+                    av_log(c->ctx, AV_LOG_WARNING, "Cannot get correct #EXTINF value of segment %s,"
+                                    " set to default value to 1ms.\n", seg->url);
+                    duration = 0.001 * AV_TIME_BASE;
+                }
+                seg->duration = duration;
+                seg->key_type = key_type;
                 dynarray_add(&pls->segments, &pls->n_segments, seg);
                 is_segment = 0;