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-rw-r--r--libavformat/matroskadec.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 556d6b9eb8..4d18d99e15 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1154,6 +1154,8 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
return -1;
matroska_execute_seekhead(matroska);
+ if (!matroska->time_scale)
+ matroska->time_scale = 1000000;
if (matroska->duration)
matroska->ctx->duration = matroska->duration * matroska->time_scale
* 1000 / AV_TIME_BASE;