A negative timescale doesn't make sense and triggers assertions in
av_rescale_rnd.
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavformat/mov.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 6f313a5..413675f 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -4233,6 +4233,11 @@ static int mov_read_sidx(MOVContext *c, AVIOContext *pb,
MOVAtom atom)
timescale = av_make_q(1, avio_rb32(pb));
+ if (timescale.den <= 0) {
+ av_log(c->fc, AV_LOG_ERROR, "Invalid sidx timescale 1/%d\n",
timescale.den);
+ return AVERROR_INVALIDDATA;
+ }
+
if (version == 0) {
pts = avio_rb32(pb);
offset += avio_rb32(pb);
--
2.9.3
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