[FFmpeg-devel] [PATCH 2/4] avformat/dhav: do not use zero fps

Michael Niedermayer michael at niedermayer.cc
Fri Sep 17 22:56:14 EEST 2021


Fixes: assertion failure
Fixes: 38332/clusterfuzz-testcase-minimized-ffmpeg_dem_DHAV_fuzzer-4522405595316224

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/dhav.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/dhav.c b/libavformat/dhav.c
index 5ae39a2a64c..f67b0b89ac9 100644
--- a/libavformat/dhav.c
+++ b/libavformat/dhav.c
@@ -315,7 +315,7 @@ static int64_t get_pts(AVFormatContext *s, int stream_index)
 
         if (diff < 0)
             diff += 65535;
-        if (diff == 0)
+        if (diff == 0 && dhav->frame_rate)
             diff = av_rescale(dhav->frame_number - dst->last_frame_number, 1000, dhav->frame_rate);
         dst->pts += diff;
     } else {
-- 
2.17.1



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