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-rw-r--r--libavformat/r3d.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libavformat/r3d.c b/libavformat/r3d.c
index 619c6a7b6c..5dd7f997e5 100644
--- a/libavformat/r3d.c
+++ b/libavformat/r3d.c
@@ -23,6 +23,7 @@
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
+#include "libavutil/mathematics.h"
#include "avformat.h"
typedef struct {