X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fsbgdec.c;h=cbedd120fbf2756154f0f723eebb362133e80d1a;hb=fa3e49568dc856a66825985878b15eda21e67ab6;hp=bb020d7f9a26473aed8e8abe4f75340e6fc19df5;hpb=bbd0ebfd835761d1abbe030a8a7866d88b2a8777;p=ffmpeg

diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c
index bb020d7f9a2..cbedd120fbf 100644
--- a/libavformat/sbgdec.c
+++ b/libavformat/sbgdec.c
@@ -927,7 +927,7 @@ static void expand_timestamps(void *log, struct sbg_script *s)
         }
     }
     if (s->start_ts == AV_NOPTS_VALUE)
-        s->start_ts = s->opt_start_at_first ? s->tseq[0].ts.t : now;
+        s->start_ts = (s->opt_start_at_first && s->tseq) ? s->tseq[0].ts.t : now;
     s->end_ts = s->opt_duration ? s->start_ts + s->opt_duration :
                 AV_NOPTS_VALUE; /* may be overridden later by -E option */
     cur_ts = now;