--- a
+++ b/tools/data/kinetics/rename_classnames.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+# Rename classname for convenience
+DATASET=$1
+if [ "$DATASET" == "kinetics400" ] || [ "$1" == "kinetics600" ] || [ "$1" == "kinetics700" ]; then
+        echo "We are processing $DATASET"
+else
+        echo "Bad Argument, we only support kinetics400, kinetics600 or kinetics700"
+        exit 0
+fi
+
+cd ../../../data/${DATASET}/
+ls ./videos_train | while read class; do \
+  newclass=`echo $class | tr " " "_" `;
+  if [ "${class}" != "${newclass}" ]
+  then
+    mv "videos_train/${class}" "videos_train/${newclass}";
+  fi
+done
+
+ls ./videos_val | while read class; do \
+  newclass=`echo $class | tr " " "_" `;
+  if [ "${class}" != "${newclass}" ]
+  then
+    mv "videos_val/${class}" "videos_val/${newclass}";
+  fi
+done
+
+cd ../../tools/data/${DATASET}/