diff --git a/openVulkanoCpp/IO/Archive/ArchiveReader.cpp b/openVulkanoCpp/IO/Archive/ArchiveReader.cpp
index ee58ad5..fb57ccb 100644
--- a/openVulkanoCpp/IO/Archive/ArchiveReader.cpp
+++ b/openVulkanoCpp/IO/Archive/ArchiveReader.cpp
@@ -34,6 +34,7 @@ namespace openVulkanoCpp
 		: ArchiveBase(archive_read_new(), nullptr, logger)
 	{
 		ChkErr(archive_read_support_filter_all(m_archive));
+		ChkErr(archive_read_support_format_all(m_archive));
 		ChkErr(archive_read_open_memory(m_archive, archiveBuffer, size));
 		ReadNextHeader();
 	}
diff --git a/openVulkanoCpp/Math/CameraIntrinsic.hpp b/openVulkanoCpp/Math/CameraIntrinsic.hpp
index 17a730d..0e580a5 100644
--- a/openVulkanoCpp/Math/CameraIntrinsic.hpp
+++ b/openVulkanoCpp/Math/CameraIntrinsic.hpp
@@ -13,7 +13,9 @@ namespace openVulkanoCpp::Math
 	class CameraIntrinsic
 	{
 	public:
-		const Math::Matrix3f cameraMatrix;
+		Math::Matrix3f cameraMatrix;
+
+		CameraIntrinsic() : CameraIntrinsic(Math::Matrix3f(0)) {}
 
 		CameraIntrinsic(const Math::Matrix3f& camMat) : cameraMatrix(camMat)
 		{}
diff --git a/openVulkanoCpp/Math/Timestamp.hpp b/openVulkanoCpp/Math/Timestamp.hpp
index b99fb95..e8fdb97 100644
--- a/openVulkanoCpp/Math/Timestamp.hpp
+++ b/openVulkanoCpp/Math/Timestamp.hpp
@@ -35,6 +35,18 @@ namespace openVulkanoCpp::Math
 			timestamp -= rhs.timestamp;
 			return *this;
 		}
+
+		Timestamp& operator =(double time)
+		{
+			timestamp = Timestamp(time).timestamp;
+			return *this;
+		}
+
+		Timestamp& operator =(uint64_t time)
+		{
+			timestamp = time;
+			return *this;
+		}
 	};
 
 	inline bool operator==(const Timestamp& lhs, const Timestamp& rhs)