diff --git a/build_tc.sh b/build_tc.sh
index 8bcb6c0..6485917 100644
--- a/build_tc.sh
+++ b/build_tc.sh
@@ -120,7 +120,12 @@ elif [ "$STEP" == "ffmpeg" ]; then
   then
     patch -N -p1 -i ../../patches/0001-dynamic-loading-of-shared-fdk-aac-library.patch
   fi
-  
+  patch -N -p0 --dry-run --silent -i ../../patches/0002-set-matroska-timebase-to-one-microsecond.patch
+  if [ $? -eq 0 ];
+  then
+    patch -N -p0 -i ../../patches/0002-set-matroska-timebase-to-one-microsecond.patch
+  fi
+    
   echo "### Compiling FFMpeg ..."
   cd $SRC/ffmpeg
   if [ "$MODE" == "debug" ]; then