diff --git a/media/libstagefright/binding/include/mp4_demuxer/MoofParser.h b/media/libstagefright/binding/include/mp4_demuxer/MoofParser.h
index 4b1740b1e234..3d827013302f 100644
--- a/media/libstagefright/binding/include/mp4_demuxer/MoofParser.h
+++ b/media/libstagefright/binding/include/mp4_demuxer/MoofParser.h
@@ -35,7 +35,9 @@ public:
 
   Microseconds ToMicroseconds(int64_t aTimescaleUnits)
   {
-    return aTimescaleUnits * 1000000ll / mTimescale;
+    int64_t major = aTimescaleUnits / mTimescale;
+    int64_t remainder = aTimescaleUnits % mTimescale;
+    return major * 1000000ll + remainder * 1000000ll / mTimescale;
   }
 
   uint64_t mCreationTime;