diff --git a/app/xcode/Sources/VCamMedia/VideoFormat+.swift b/app/xcode/Sources/VCamMedia/VideoFormat+.swift
new file mode 100644
index 0000000..00c716c
--- /dev/null
+++ b/app/xcode/Sources/VCamMedia/VideoFormat+.swift
@@ -0,0 +1,22 @@
+//
+//  VideoFormat+.swift
+//  
+//
+//  Created by Tatsuya Tanaka on 2022/04/22.
+//
+
+import VCamEntity
+import AVFoundation
+
+public extension VideoFormat {
+    var fileType: AVFileType {
+        switch self {
+        case .mp4:
+            return .mp4
+        case .mov:
+            return .mov
+        case .m4v:
+            return .m4v
+        }
+    }
+}
diff --git a/app/xcode/Sources/VCamTracking/InterfaceType+.swift b/app/xcode/Sources/VCamTracking/InterfaceType+.swift
index 32ca74f..f6c16c5 100644
--- a/app/xcode/Sources/VCamTracking/InterfaceType+.swift
+++ b/app/xcode/Sources/VCamTracking/InterfaceType+.swift
@@ -14,7 +14,7 @@ public extension NWInterface.InterfaceType {
     private var names: [String] {
         switch self {
         case .wifi:
-            return ["en0"]
+            return ["en0", "en1"]
         case .wiredEthernet:
             return ["en2", "en3", "en4"]
         case .cellular: