diff --git a/trunk/doc/ISO_IEC_14496-12-base-format-2005.pdf b/trunk/doc/ISO_IEC_14496-12-base-format-2005.pdf
new file mode 100644
index 0000000000..5a6a6290f2
Binary files /dev/null and b/trunk/doc/ISO_IEC_14496-12-base-format-2005.pdf differ
diff --git a/trunk/doc/ISO_IEC_14496-12-base-format-2012.pdf b/trunk/doc/ISO_IEC_14496-12-base-format-2012.pdf
index c3ac62ca3f..d58e84ec18 100644
Binary files a/trunk/doc/ISO_IEC_14496-12-base-format-2012.pdf and b/trunk/doc/ISO_IEC_14496-12-base-format-2012.pdf differ
diff --git a/trunk/src/kernel/srs_kernel_mp4.cpp b/trunk/src/kernel/srs_kernel_mp4.cpp
index 5e7a938598..5f9abd8223 100644
--- a/trunk/src/kernel/srs_kernel_mp4.cpp
+++ b/trunk/src/kernel/srs_kernel_mp4.cpp
@@ -23,23 +23,54 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_kernel_mp4.hpp>
 
-SrsMp4Box::SrsMp4Box(uint32_t bt)
+SrsMp4Box::SrsMp4Box()
 {
     size = 0;
-    type = bt;
+    type = 0;
 }
 
 SrsMp4Box::~SrsMp4Box()
 {
 }
 
-SrsMp4FullBox::SrsMp4FullBox(uint32_t bt, uint8_t v, uint32_t f) : SrsMp4Box(bt)
+SrsMp4FullBox::SrsMp4FullBox()
 {
-    version = v;
-    flags = f;
+    version = 0;
+    flags = 0;
 }
 
 SrsMp4FullBox::~SrsMp4FullBox()
 {
 }
 
+SrsMp4FileTypeBox::SrsMp4FileTypeBox()
+{
+    type = 0x66747970; // 'ftyp'
+    nb_compatible_brands = 0;
+    compatible_brands = NULL;
+    major_brand = minor_version = 0;
+}
+
+SrsMp4FileTypeBox::~SrsMp4FileTypeBox()
+{
+    srs_freepa(compatible_brands);
+}
+
+SrsMp4MovieBox::SrsMp4MovieBox()
+{
+    type = 0x6d6f6f76; // 'moov'
+}
+
+SrsMp4MovieBox::~SrsMp4MovieBox()
+{
+}
+
+SrsMp4MovieHeaderBox::SrsMp4MovieHeaderBox()
+{
+    type = 0x6d766864; // 'mvhd'
+}
+
+SrsMp4MovieHeaderBox::~SrsMp4MovieHeaderBox()
+{
+}
+
diff --git a/trunk/src/kernel/srs_kernel_mp4.hpp b/trunk/src/kernel/srs_kernel_mp4.hpp
index ddca3c6cea..0ccce0a0bf 100644
--- a/trunk/src/kernel/srs_kernel_mp4.hpp
+++ b/trunk/src/kernel/srs_kernel_mp4.hpp
@@ -42,7 +42,7 @@ class SrsMp4Box
     uint32_t size;
     uint32_t type;
 public:
-    SrsMp4Box(uint32_t bt);
+    SrsMp4Box();
     virtual ~SrsMp4Box();
 };
 
@@ -58,10 +58,51 @@ class SrsMp4FullBox : public SrsMp4Box
     // a map of flags
     uint32_t flags;
 public:
-    SrsMp4FullBox(uint32_t bt, uint8_t v, uint32_t f);
+    SrsMp4FullBox();
     virtual ~SrsMp4FullBox();
 };
 
+/**
+ * 4.3 File Type Box
+ * ISO_IEC_14496-12-base-format-2012.pdf, page 17
+ */
+class SrsMp4FileTypeBox : public SrsMp4Box
+{
+public:
+    // a brand identifier
+    uint32_t major_brand;
+    // an informative integer for the minor version of the major brand
+    uint32_t minor_version;
+private:
+    // a list, to the end of the box, of brands
+    int nb_compatible_brands;
+    uint32_t* compatible_brands;
+public:
+    SrsMp4FileTypeBox();
+    virtual ~SrsMp4FileTypeBox();
+};
+
+/**
+ * 8.2.1 Movie Box
+ * ISO_IEC_14496-12-base-format-2012.pdf, page 31
+ */
+class SrsMp4MovieBox : public SrsMp4Box
+{
+public:
+    SrsMp4MovieBox();
+    virtual ~SrsMp4MovieBox();
+};
+
+/**
+ * 8.2.2 Movie Header Box
+ * ISO_IEC_14496-12-base-format-2012.pdf, page 31
+ */
+class SrsMp4MovieHeaderBox : public SrsMp4Box
+{
+public:
+    SrsMp4MovieHeaderBox();
+    virtual ~SrsMp4MovieHeaderBox();
+};
 
 #endif