diff --git a/MP4/box_tfhd.cpp b/MP4/box_tfhd.cpp
new file mode 100644
index 00000000..e8511291
--- /dev/null
+++ b/MP4/box_tfhd.cpp
@@ -0,0 +1,67 @@
+#include "box_tfhd.h"
+
+Box_tfhd::Box_tfhd( ) {
+  Container = new Box( 0x74666864 );
+  SetDefaults( );
+}
+
+Box_tfhd::~Box_tfhd() {
+  delete Container;
+}
+
+Box * Box_tfhd::GetBox() {
+  return Container;
+}
+
+void Box_tfhd::SetTrackID( uint32_t TrackID = 0 ) {
+  curTrackID = TrackID
+}
+
+void Box_tfhd::SetBaseDataOffset( uint32_t Offset = 0 ) {
+  curBaseDataOffset = Offset;
+}
+
+void Box_tfhd::SetSampleDescriptionIndex( uint32_t Index = 0 ) {
+  curSampleDescriptionIndex = Index );
+}
+
+void Box_tfhd::SetDefaultSampleDuration( uint32_t Duration = 0 ) {
+  curDefaultSampleDuration = Duration;
+}
+
+void Box_tfhd::SetDefaultSampleSize( uint32_t Size ) {
+  curDefaultSampleSize = Size;
+}
+
+void Box_tfhd::WriteContent( ) {
+  uint32_t curoffset;
+  uint32_t flags = 0 & ( curBaseDataOffset ? 0x1 : 0 ) & ( curSampleDesciptionIndex ? 0x2 : 0 ) & ( curDefaultSampleDuration ? 0x8 : 0 ) & ( curDefaultSampleSize ? 0x10 : 0 );
+  Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(flags));
+  Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(curTrackId),4);
+  curoffset = 8;
+  if( curBaseDataOffset ) {
+    Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(curTrackId),curoffset);
+    Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(curTrackId),curoffset+4);
+    curoffset += 8;
+  }
+  if( curSampleDescriptionIndex ) {
+    Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(curSampleDescriptionIndex),curoffset);
+    curoffset += 8;
+  }
+  if( curDefaultSampleDuration ) {
+    Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(curDefaultSampleDuration),curoffset);
+    curoffset += 8;
+  }
+  if( curDefaultSampleSize ) {
+    Container->SetPayload((uint32_t)4,Box::uint32_to_uint8(curDefaultSampleSize),curoffset);
+    curoffset += 8;
+  ]
+}
+
+void Box_tfhd::SetDefaults( ) {
+  SetTrackID( );
+  SetBaseDataOffset( );
+  SetSampleDescriptionIndex( );
+  SetDefaultSampleDuration( );
+  SetDefaultSampleSize( );
+}
diff --git a/MP4/box_tfhd.h b/MP4/box_tfhd.h
new file mode 100644
index 00000000..bc4987d8
--- /dev/null
+++ b/MP4/box_tfhd.h
@@ -0,0 +1,23 @@
+#include "box.h"
+
+class Box_tfhd {
+  public:
+    Box_tfhd( );
+    ~Box_tfhd();
+    Box * GetBox();
+    void SetTrackID( uint32_t TrackID = 0 );
+    void SetBaseDataOffset( uint32_t Offset = 0 );//write as uint64_t
+    void SetSampleDescriptionIndex( uint32_t Index = 0 );
+    void SetDefaultSampleDuration( uint32_t Duration = 0 );
+    void SetDefaultSampleSize( uint32_t Size = 0 );
+    void WriteContent( );
+  private:
+    void SetDefaults( );
+    uint32_t curTrackID;
+    uint32_t curBaseDataOffset;
+    uint32_t curSampleDescriptionIndex;
+    uint32_t curDefaultSampleDuration;
+    uint32_t curDefaultSampleSize;
+    Box * Container;
+};//Box_ftyp Class
+