diff --git a/AVDump3CL/AVDump3CL.csproj b/AVDump3CL/AVDump3CL.csproj
index e50defc..03773ce 100644
--- a/AVDump3CL/AVDump3CL.csproj
+++ b/AVDump3CL/AVDump3CL.csproj
@@ -5,7 +5,7 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <ApplicationIcon>AVD3Icon.ico</ApplicationIcon>
     <StartupObject>AVDump3CL.Program</StartupObject>
-    <AssemblyVersion>3.0.8071.0</AssemblyVersion>
+    <AssemblyVersion>3.0.8072.0</AssemblyVersion>
     <Version>3.0.0</Version>
     <Company>extknot</Company>
     <Authors>DvdKhl</Authors>
@@ -16,7 +16,7 @@
     <NeutralLanguage>en</NeutralLanguage>
     <Copyright>Copyright © 2020 extknot</Copyright>
     <Platforms>AnyCPU;x64</Platforms>
-    <FileVersion>3.0.8071.0</FileVersion>
+    <FileVersion>3.0.8072.0</FileVersion>
     <Configurations>Debug;Release;GithubWorkflow</Configurations>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/AVDump3Lib/AVDump3Lib.csproj b/AVDump3Lib/AVDump3Lib.csproj
index 37f0f0d..c9f270d 100644
--- a/AVDump3Lib/AVDump3Lib.csproj
+++ b/AVDump3Lib/AVDump3Lib.csproj
@@ -13,8 +13,8 @@
     <NeutralLanguage>en</NeutralLanguage>
     <ApplicationIcon></ApplicationIcon>
     <Platforms>AnyCPU;x64</Platforms>
-    <AssemblyVersion>3.0.8071.0</AssemblyVersion>
-    <FileVersion>3.0.8071.0</FileVersion>
+    <AssemblyVersion>3.0.8072.0</AssemblyVersion>
+    <FileVersion>3.0.8072.0</FileVersion>
     <Configurations>Debug;Release;GithubWorkflow</Configurations>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/AVDump3Lib/Information/InfoProvider/FormatInfoProvider.cs b/AVDump3Lib/Information/InfoProvider/FormatInfoProvider.cs
index aa2b132..84db800 100644
--- a/AVDump3Lib/Information/InfoProvider/FormatInfoProvider.cs
+++ b/AVDump3Lib/Information/InfoProvider/FormatInfoProvider.cs
@@ -516,7 +516,7 @@ public override void ElaborateCheck(Stream stream) {
 		}
 	}
 	public class SMILFileType : FileType {
-		public SMILFileType() : base("", identifier: "SMIL") { PossibleExtensions = new string[] { "smil" }; fileType = MediaProvider.MediaStreamType; }
+		public SMILFileType() : base("", identifier: "SMIL") { PossibleExtensions = new string[] { "smil" }; }
 
 		public override void ElaborateCheck(Stream stream) {
 			if(!IsCandidate) return;
@@ -612,13 +612,36 @@ public override void ElaborateCheck(Stream stream) {
 			if(str.IndexOf("% zerog") < 0) { IsCandidate = false; return; }
 		}
 	}
-	public class C7zFileType : FileType { public C7zFileType() : base(new byte[] { 0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C }, identifier: "compression/7z") => PossibleExtensions = new string[] { "7z" }; }
-	public class ZipFileType : FileType { public ZipFileType() : base(new byte[][] { new byte[] { 0x50, 0x4b, 0x03, 0x04 }, new byte[] { 0x50, 0x4b, 0x30, 0x30, 0x50, 0x4b } }, identifier: "compression/zip") => PossibleExtensions = new string[] { "zip" }; }
-	public class RarFileType : FileType { public RarFileType() : base(new byte[] { 0x52, 0x61, 0x72, 0x21 }, identifier: "compression/rar") => PossibleExtensions = new string[] { "rar" }; }
+	public class C7zFileType : FileType {
+		public C7zFileType() : base(new byte[] { 0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C }, identifier: "compression/7z") => PossibleExtensions = new string[] { "7z" };
+		public override void AddInfo(MetaDataProvider provider) {
+			if(!string.IsNullOrEmpty(identifier)) {
+				var container = new MetaInfoContainer(0, fileType);
+				provider.AddNode(container);
+				provider.Add(container, MediaProvider.FileTypeIdentifierType, identifier);
+			}
+		}
+	}
+	public class ZipFileType : FileType {
+		public ZipFileType() : base(new byte[][] { new byte[] { 0x50, 0x4b, 0x03, 0x04 }, new byte[] { 0x50, 0x4b, 0x30, 0x30, 0x50, 0x4b } }, identifier: "compression/zip") => PossibleExtensions = new string[] { "zip" };
+		public override void AddInfo(MetaDataProvider provider) {
+			if(!string.IsNullOrEmpty(identifier)) {
+				provider.Add(MediaProvider.FileTypeIdentifierType, identifier);
+			}
+		}
+	}
+	public class RarFileType : FileType {
+		public RarFileType() : base(new byte[] { 0x52, 0x61, 0x72, 0x21 }, identifier: "compression/rar") => PossibleExtensions = new string[] { "rar" };
+		public override void AddInfo(MetaDataProvider provider) {
+			if(!string.IsNullOrEmpty(identifier)) {
+				provider.Add(MediaProvider.FileTypeIdentifierType, identifier);
+			}
+		}
+	}
 	public class RaFileType : FileType { public RaFileType() : base(".ra" + (char)0xfd) { PossibleExtensions = new string[] { "ra" }; fileType = MediaProvider.AudioStreamType; } }
 	public class FlacFileType : FileType { public FlacFileType() : base("fLaC") { PossibleExtensions = new string[] { "flac" }; fileType = MediaProvider.AudioStreamType; } }
 	public class AviFileType : FileType { public AviFileType() : base("RIFF") { PossibleExtensions = new string[] { "avi" }; fileType = MediaProvider.VideoStreamType; } public override void ElaborateCheck(Stream stream) => IsCandidate &= Check(stream, 8, "AVI LIST"); }
-	public class WavFileType : FileType { public WavFileType() : base(new string[] { "RIFX", "RIFF" }) => PossibleExtensions = new string[] { "wav" }; public override void ElaborateCheck(Stream stream) => IsCandidate &= Check(stream, 8, "WAVE"); }
+	public class WavFileType : FileType { public WavFileType() : base(new string[] { "RIFX", "RIFF" }) { PossibleExtensions = new string[] { "wav" }; fileType = MediaProvider.AudioStreamType; } public override void ElaborateCheck(Stream stream) => IsCandidate &= Check(stream, 8, "WAVE"); }
 
 	public abstract class FileType : IFileType {
 		private byte[][] magicBytesLst;
diff --git a/AVDump3Lib/Information/MetaInfo/MediaProvider.cs b/AVDump3Lib/Information/MetaInfo/MediaProvider.cs
index 35c9ef7..d8925e2 100644
--- a/AVDump3Lib/Information/MetaInfo/MediaProvider.cs
+++ b/AVDump3Lib/Information/MetaInfo/MediaProvider.cs
@@ -17,6 +17,8 @@ public abstract class MediaProvider : MetaDataProvider {
 		public MediaProvider(string name) : base(name, MediaProviderType) { }
 		public static readonly MetaInfoContainerType MediaProviderType = new MetaInfoContainerType("MediaProvider");
 
+		public static readonly MetaInfoItemType<string> FileTypeIdentifierType = new MetaInfoItemType<string>("FileTypeIdentifier"); //TODO
+
 		public static readonly MetaInfoItemType<long> FileSizeType = new MetaInfoItemType<long>("FileSize", "bytes");
 		public static readonly MetaInfoItemType<long> OverheadType = new MetaInfoItemType<long>("Overhead", "bytes");
 		public static readonly MetaInfoItemType<string> ContainerVersionType = new MetaInfoItemType<string>("ContainerVersion");