[FFmpeg-cvslog] Use av_sat_sub64() when updating pts by duration.

[Dale Curtis]

ffmpeg | branch: master | Dale Curtis <dalecurtis at chromium.org> | Thu May 14 14:33:55 2020 -0700| [fc54db32652bc830fba002da19c2ba9ba4508ca5] | committer: Michael Niedermayer

Use av_sat_sub64() when updating pts by duration.

Signed-off-by: Dale Curtis <dalecurtis at chromium.org>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fc54db32652bc830fba002da19c2ba9ba4508ca5
---

 libavformat/oggparsetheora.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/oggparsetheora.c b/libavformat/oggparsetheora.c
index 87a676fe48..c481a79d4b 100644
--- a/libavformat/oggparsetheora.c
+++ b/libavformat/oggparsetheora.c
@@ -191,7 +191,7 @@ static int theora_packet(AVFormatContext *s, int idx)
 
         pts = theora_gptopts(s, idx, os->granule, NULL);
         if (pts != AV_NOPTS_VALUE)
-            pts -= duration;
+            pts = av_sat_sub64(pts, duration);
         os->lastpts = os->lastdts = pts;
         if(s->streams[idx]->start_time == AV_NOPTS_VALUE) {
             s->streams[idx]->start_time = os->lastpts;