diff --git a/zeus/File.cpp b/zeus/File.cpp
index 8e55add..7748ce8 100644
--- a/zeus/File.cpp
+++ b/zeus/File.cpp
@@ -37,6 +37,13 @@ zeus::File::File(const std::string& _mineType, std::vector<uint8_t> _data, int32
 	}
 }
 
+zeus::File::File(const std::string& _mineType, int32_t _size) :
+  m_mineType(_mineType),
+  m_data() {
+	m_data.resize(_size);
+	m_fileSize = _size;
+}
+
 void zeus::File::setData(uint64_t _offset, const std::vector<uint8_t>& _data) {
 	setData(_offset, &_data[0], _data.size());
 }
diff --git a/zeus/File.h b/zeus/File.h
index 0baedf6..7990bfc 100644
--- a/zeus/File.h
+++ b/zeus/File.h
@@ -29,9 +29,15 @@ namespace zeus {
 			 * @brief Constructor of a typed file
 			 * @param[in] _mineType mine type of the file
 			 * @param[in] _data data of the file
-			 * @param[in] _fileSize théoric file size
+			 * @param[in] _fileSize theoric file size
 			 */
 			File(const std::string& _mineType, std::vector<uint8_t> _data, int32_t _fileSize = -1);
+			/**
+			 * @brief Constructor of a typed file
+			 * @param[in] _mineType mine type of the file
+			 * @param[in] _fileSize preallocation size (data will be set after ...)
+			 */
+			File(const std::string& _mineType, int32_t _size);
 			/**
 			 * @brief get the théoric file size
 			 * @return size of the file
diff --git a/zeus/mineType.cpp b/zeus/mineType.cpp
index fe5df4f..3880a54 100644
--- a/zeus/mineType.cpp
+++ b/zeus/mineType.cpp
@@ -112,6 +112,14 @@ static std::vector<std::pair<std::string, std::string>> mineList = {
   /* Miscellaneous text files */
   { "bup", "text/bup"}, /* DVD backup */
   { "ifo", "text/ifo"}, /* DVD information */
+  
+  /* Some Raw format for images */
+  { "yuv422",  "image/x-raw/yuv422"},
+  { "yuv420",  "image/x-raw/yuv420"},
+  { "yuv411",  "image/x-raw/yuv411"},
+  { "rgb",     "image/x-raw/r8g8b8"},
+  { "rgba",    "image/x-raw/r8g8b8a8"},
+  
 };
 
 std::string zeus::getMineType(const std::string& _extention) {