diff --git a/BizHawk.MultiClient/AviWriter.cs b/BizHawk.MultiClient/AviWriter.cs
index 1094338f9e..7f406bcf21 100644
--- a/BizHawk.MultiClient/AviWriter.cs
+++ b/BizHawk.MultiClient/AviWriter.cs
@@ -10,7 +10,7 @@ using BizHawk;
 
 namespace BizHawk.MultiClient
 {
-	class AviWriter : VideoWriter
+	class AviWriter : IVideoWriter
 	{
 		CodecToken currVideoCodecToken = null;
 		AviWriterSegment currSegment;
diff --git a/BizHawk.MultiClient/BizHawk.MultiClient.csproj b/BizHawk.MultiClient/BizHawk.MultiClient.csproj
index a5a2ef0a59..c4c5ebd709 100644
--- a/BizHawk.MultiClient/BizHawk.MultiClient.csproj
+++ b/BizHawk.MultiClient/BizHawk.MultiClient.csproj
@@ -292,7 +292,7 @@
     </Compile>
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="VideoWriter.cs" />
+    <Compile Include="IVideoWriter.cs" />
     <EmbeddedResource Include="config\GifAnimator.resx">
       <DependentUpon>GifAnimator.cs</DependentUpon>
     </EmbeddedResource>
diff --git a/BizHawk.MultiClient/VideoWriter.cs b/BizHawk.MultiClient/IVideoWriter.cs
similarity index 94%
rename from BizHawk.MultiClient/VideoWriter.cs
rename to BizHawk.MultiClient/IVideoWriter.cs
index b0855cde9d..ace087e2bd 100644
--- a/BizHawk.MultiClient/VideoWriter.cs
+++ b/BizHawk.MultiClient/IVideoWriter.cs
@@ -4,7 +4,7 @@ using System.Collections.Generic;
 
 namespace BizHawk
 {
-    public interface VideoWriter : IDisposable
+    public interface IVideoWriter : IDisposable
     {
         /// <summary>
         /// sets the codec token to be used for video compression
diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index 1f700e2a1b..b22e9ccd25 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -32,7 +32,7 @@ namespace BizHawk.MultiClient
 		public bool PressRewind = false;
 
 		//avi/wav state
-		VideoWriter CurrAviWriter = null;
+		IVideoWriter CurrAviWriter = null;
 
 		//runloop control
 		bool exit;
@@ -2666,7 +2666,7 @@ namespace BizHawk.MultiClient
 
 			//TODO - cores should be able to specify exact values for these instead of relying on this to calculate them
 			int fps = (int)(Global.Emulator.CoreOutputComm.VsyncRate * 0x01000000);
-			VideoWriter aw = new AviWriter();
+			IVideoWriter aw = new AviWriter();
 			try
 			{
 				aw.SetMovieParameters(fps, 0x01000000);