diff --git a/Code/AudioVideo/FFmpegCommands.cs b/Code/AudioVideo/FFmpegCommands.cs
index de31d55..7ffa465 100644
--- a/Code/AudioVideo/FFmpegCommands.cs
+++ b/Code/AudioVideo/FFmpegCommands.cs
@@ -117,7 +117,7 @@ namespace Flowframes
             Logger.Log($"Merging videos...", false, Logger.GetLastLine().Contains("frame"));
             string loopStr = (looptimes > 0) ? $"-stream_loop {looptimes}" : "";
             string vfrFilename = Path.GetFileName(concatFile);
-            string args = $" {loopStr} -vsync 1 -f concat -i {vfrFilename} -c copy -pix_fmt yuv420p -movflags +faststart {outPath.Wrap()}";
+            string args = $" {loopStr} -vsync 1 -f concat -i {vfrFilename} -c copy -movflags +faststart {outPath.Wrap()}";
             await AvProcess.RunFfmpeg(args, concatFile.GetParentDir(), AvProcess.LogMode.Hidden);
         }