diff --git a/paddle/parameter/Argument.cpp b/paddle/parameter/Argument.cpp
index 0547ac93cd183afbcede41d280c6b4b16ed7dab1..77fd0c5890b45add6538348a81066d84ef9c1703 100644
--- a/paddle/parameter/Argument.cpp
+++ b/paddle/parameter/Argument.cpp
@@ -186,6 +186,7 @@ void Argument::resizeAndCopyFrom(const Argument& src,
   resizeAndCopy(strs, src.strs, useGpu, stream);
   frameWidth = src.frameWidth;
   frameHeight = src.frameHeight;
+  frameDepth = src.frameDepth;
 }
 
 int32_t Argument::resizeAndCopyFrom(const Argument& src,
@@ -206,6 +207,7 @@ int32_t Argument::resizeAndCopyFrom(const Argument& src,
   dataId = src.dataId;
   frameWidth = src.frameWidth;
   frameHeight = src.frameHeight;
+  frameDepth = src.frameDepth;
 
   if (!src.sequenceStartPositions) {
     // non-sequence input, copy samples directly
diff --git a/paddle/parameter/Argument.h b/paddle/parameter/Argument.h
index d8d7a4398f99a2794c5d25528a7d582f5ed629ba..ba3ad2fd4d99242995fad66a16ddb521e6ce9e9e 100644
--- a/paddle/parameter/Argument.h
+++ b/paddle/parameter/Argument.h
@@ -1,11 +1,8 @@
 /* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
-
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
-
     http://www.apache.org/licenses/LICENSE-2.0
-
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -35,6 +32,7 @@ struct Argument {
         strs(nullptr),
         frameHeight(0),
         frameWidth(0),
+        frameDepth(0),
         sequenceStartPositions(nullptr),
         subSequenceStartPositions(nullptr),
         cpuSequenceDims(nullptr),
@@ -64,6 +62,7 @@ struct Argument {
     allCount = argument.allCount;
     frameHeight = argument.frameHeight;
     frameWidth = argument.frameWidth;
+    frameDepth = argument.frameDepth;
     dataId = argument.dataId;
   }
 
@@ -76,6 +75,7 @@ struct Argument {
   // A dataBatch includes batchSize frames, one frame maybe not only vector
   size_t frameHeight;
   size_t frameWidth;
+  size_t frameDepth;
 
   // If NULL, each position is treated independently.
   // Otherwise, its size should be #NumberOfSequences + 1.
@@ -136,8 +136,10 @@ struct Argument {
   }
   size_t getFrameHeight() const { return frameHeight; }
   size_t getFrameWidth() const { return frameWidth; }
+  size_t getFrameDepth() const { return frameDepth; }
   void setFrameHeight(size_t h) { frameHeight = h; }
   void setFrameWidth(size_t w) { frameWidth = w; }
+  void setFrameDepth(size_t d) { frameDepth = d; }
 
   int64_t getNumSequences() const {
     return sequenceStartPositions ? sequenceStartPositions->getSize() - 1