diff --git a/src/BizHawk.Client.Common/config/Config.cs b/src/BizHawk.Client.Common/config/Config.cs
index 9bee3f6dc1..1d27da5572 100644
--- a/src/BizHawk.Client.Common/config/Config.cs
+++ b/src/BizHawk.Client.Common/config/Config.cs
@@ -276,6 +276,9 @@ namespace BizHawk.Client.Common
 		public int GifWriterDelay { get; set; } = -1;
 		public bool VideoWriterAudioSync { get; set; } = true;
 
+		[JsonIgnore]
+		public bool VideoWriterAudioSyncEffective;
+
 		// Emulation core settings
 		internal Dictionary<string, JToken> CoreSettings { get; set; } = new Dictionary<string, JToken>();
 		internal Dictionary<string, JToken> CoreSyncSettings { get; set; } = new Dictionary<string, JToken>();
@@ -368,5 +371,9 @@ namespace BizHawk.Client.Common
 		public bool RASoundEffects { get; set; } = true;
 		public bool RAAllowUnofficialCheevos { get; set; }
 		public bool RAAutostart { get; set; }
+
+		public bool AVWriterPad { get; set; } = false;
+
+		public (int Width, int Height) AVWriterResize { get; set; } = (0, 0);
 	}
 }
diff --git a/src/BizHawk.Client.EmuHawk/AVOut/VideoWriterChooserForm.cs b/src/BizHawk.Client.EmuHawk/AVOut/VideoWriterChooserForm.cs
index 699b307020..a1b9aa9192 100644
--- a/src/BizHawk.Client.EmuHawk/AVOut/VideoWriterChooserForm.cs
+++ b/src/BizHawk.Client.EmuHawk/AVOut/VideoWriterChooserForm.cs
@@ -61,15 +61,15 @@ namespace BizHawk.Client.EmuHawk
 			IEnumerable<VideoWriterInfo> list,
 			T owner,
 			IEmulator emulator,
-			Config config,
-			out int resizeW,
-			out int resizeH,
-			out bool pad,
-			ref bool audioSync)
+			Config config)
 				where T : IMainFormForTools, IDialogParent
 		{
 			var dlg = new VideoWriterChooserForm(owner, emulator, config)
 			{
+				checkBoxASync = { Checked = config.VideoWriterAudioSyncEffective },
+				checkBoxPad = { Checked = config.AVWriterPad },
+				numericTextBoxH = { Text = Math.Max(0, config.AVWriterResize.Height).ToString() },
+				numericTextBoxW = { Text = Math.Max(0, config.AVWriterResize.Width).ToString() },
 				labelDescriptionBody = { Text = "" }
 			};
 
@@ -95,8 +95,6 @@ namespace BizHawk.Client.EmuHawk
 				c.Enabled = false;
 			}
 
-			dlg.checkBoxASync.Checked = audioSync;
-
 			IVideoWriter ret = null;
 			if (owner.ShowDialogAsChild(dlg).IsOk()
 				&& dlg.listBox1.SelectedIndex is not -1)
@@ -106,20 +104,14 @@ namespace BizHawk.Client.EmuHawk
 				config.VideoWriter = vwi.Attribs.ShortName;
 			}
 
-			if (ret != null && dlg.checkBoxResize.Checked)
+			if (ret is not null)
 			{
-				resizeW = dlg.numericTextBoxW.IntValue;
-				resizeH = dlg.numericTextBoxH.IntValue;
+				config.AVWriterResize = dlg.checkBoxResize.Checked
+					? (dlg.numericTextBoxW.IntValue, dlg.numericTextBoxH.IntValue)
+					: (-1, -1);
+				config.AVWriterPad = dlg.checkBoxPad.Checked;
+				config.VideoWriterAudioSyncEffective = config.VideoWriterAudioSync = dlg.checkBoxASync.Checked;
 			}
-			else
-			{
-				resizeW = -1;
-				resizeH = -1;
-			}
-
-			pad = dlg.checkBoxPad.Checked;
-			audioSync = dlg.checkBoxASync.Checked;
-
 			dlg.Dispose();
 			return ret;
 		}
diff --git a/src/BizHawk.Client.EmuHawk/MainForm.cs b/src/BizHawk.Client.EmuHawk/MainForm.cs
index a93cf5a864..099dc7c4fa 100644
--- a/src/BizHawk.Client.EmuHawk/MainForm.cs
+++ b/src/BizHawk.Client.EmuHawk/MainForm.cs
@@ -606,11 +606,7 @@ namespace BizHawk.Client.EmuHawk
 				LoadMostRecentROM();
 			}
 
-			if (_argParser.audiosync.HasValue)
-			{
-				Config.VideoWriterAudioSync = _argParser.audiosync.Value;
-			}
-
+			Config.VideoWriterAudioSyncEffective = _argParser.audiosync ?? Config.VideoWriterAudioSync;
 			_autoDumpLength = _argParser._autoDumpLength;
 			if (_argParser.cmdMovie != null)
 			{
@@ -1705,10 +1701,6 @@ namespace BizHawk.Client.EmuHawk
 		private ISoundProvider _aviSoundInputAsync; // Note: This sound provider must be in async mode!
 
 		private SimpleSyncSoundProvider _dumpProxy; // an audio proxy used for dumping
-		private bool _dumpaudiosync; // set true to for experimental AV dumping
-		private int _avwriterResizew;
-		private int _avwriterResizeh;
-		private bool _avwriterpad;
 
 		private bool _windowClosedAndSafeToExitProcess;
 		private int _exitCode;
@@ -3358,7 +3350,6 @@ namespace BizHawk.Client.EmuHawk
 				videoWriterName = Config.VideoWriter;
 			}
 
-			_dumpaudiosync = Config.VideoWriterAudioSync;
 			if (unattended && !string.IsNullOrEmpty(videoWriterName))
 			{
 				aw = VideoWriterInventory.GetVideoWriter(videoWriterName, this);
@@ -3369,11 +3360,7 @@ namespace BizHawk.Client.EmuHawk
 					VideoWriterInventory.GetAllWriters(),
 					this,
 					Emulator,
-					Config,
-					out _avwriterResizew,
-					out _avwriterResizeh,
-					out _avwriterpad,
-					ref _dumpaudiosync);
+					Config);
 			}
 
 			if (aw == null)
@@ -3392,19 +3379,11 @@ namespace BizHawk.Client.EmuHawk
 				const bool usingAvi = false;
 #endif
 
-				if (_dumpaudiosync)
-				{
-					aw = new VideoStretcher(aw);
-				}
-				else
-				{
-					aw = new AudioStretcher(aw);
-				}
-
+				aw = Config.VideoWriterAudioSyncEffective ? new VideoStretcher(aw) : new AudioStretcher(aw);
 				aw.SetMovieParameters(Emulator.VsyncNumerator(), Emulator.VsyncDenominator());
-				if (_avwriterResizew > 0 && _avwriterResizeh > 0)
+				if (Config.AVWriterResize.Width > 0 && Config.AVWriterResize.Height > 0)
 				{
-					aw.SetVideoParameters(_avwriterResizew, _avwriterResizeh);
+					aw.SetVideoParameters(Config.AVWriterResize.Width, Config.AVWriterResize.Height);
 				}
 				else
 				{
@@ -3492,7 +3471,7 @@ namespace BizHawk.Client.EmuHawk
 				throw;
 			}
 
-			if (_dumpaudiosync)
+			if (Config.VideoWriterAudioSyncEffective)
 			{
 				_currentSoundProvider.SetSyncMode(SyncSoundMode.Sync);
 			}
@@ -3567,7 +3546,7 @@ namespace BizHawk.Client.EmuHawk
 				{
 					IVideoProvider output;
 					IDisposable disposableOutput = null;
-					if (_avwriterResizew > 0 && _avwriterResizeh > 0)
+					if (Config.AVWriterResize.Width > 0 && Config.AVWriterResize.Height > 0)
 					{
 						BitmapBuffer bbIn = null;
 						Bitmap bmpIn = null;
@@ -3579,11 +3558,11 @@ namespace BizHawk.Client.EmuHawk
 
 							bbIn.DiscardAlpha();
 
-							var bmpOut = new Bitmap(_avwriterResizew, _avwriterResizeh, PixelFormat.Format32bppArgb);
+							Bitmap bmpOut = new(width: Config.AVWriterResize.Width, height: Config.AVWriterResize.Height, PixelFormat.Format32bppArgb);
 							bmpIn = bbIn.ToSysdrawingBitmap();
 							using (var g = Graphics.FromImage(bmpOut))
 							{
-								if (_avwriterpad)
+								if (Config.AVWriterPad)
 								{
 									g.Clear(Color.FromArgb(_currentVideoProvider.BackgroundColor));
 									g.DrawImageUnscaled(bmpIn, (bmpOut.Width - bmpIn.Width) / 2, (bmpOut.Height - bmpIn.Height) / 2);
@@ -3627,7 +3606,7 @@ namespace BizHawk.Client.EmuHawk
 
 					short[] samp;
 					int nsamp;
-					if (_dumpaudiosync)
+					if (Config.VideoWriterAudioSyncEffective)
 					{
 						((VideoStretcher) _currAviWriter).DumpAV(output, _currentSoundProvider, out samp, out nsamp);
 					}