diff --git a/FFMpegCore/FFMPEG/FFMpeg.cs b/FFMpegCore/FFMPEG/FFMpeg.cs
index a7a9ddc..e3efe40 100644
--- a/FFMpegCore/FFMPEG/FFMpeg.cs
+++ b/FFMpegCore/FFMPEG/FFMpeg.cs
@@ -395,7 +395,7 @@ public VideoInfo Convert(ArgumentContainer arguments, bool skipExistsCheck = fal
                 throw new FFMpegException(FFMpegExceptionType.Conversion, "Could not process file without error");
 
             _totalTime = TimeSpan.MinValue;
-            return new VideoInfo(output);
+            return output.Exists ? new VideoInfo(output) : null;
         }
         public async Task<VideoInfo> ConvertAsync(ArgumentContainer arguments, bool skipExistsCheck = false)
         {
@@ -406,7 +406,7 @@ public async Task<VideoInfo> ConvertAsync(ArgumentContainer arguments, bool skip
                 throw new FFMpegException(FFMpegExceptionType.Conversion, "Could not process file without error");
 
             _totalTime = TimeSpan.MinValue;
-            return new VideoInfo(output);
+            return output.Exists ? new VideoInfo(output) : null;
         }
 
         private static (VideoInfo[] Input, FileInfo Output) GetInputOutput(ArgumentContainer arguments)
diff --git a/README.md b/README.md
index 6fddd05..e95d25c 100644
--- a/README.md
+++ b/README.md
@@ -358,9 +358,9 @@ public enum VideoCodec
 }
 ```
 ### ArgumentBuilder
-Custom video converting presets could be created with help of `ArgumentsContainer` class:
+Custom video converting presets could be created with help of `ArgumentContainer` class:
 ```csharp
-var container = new ArgumentsContainer();
+var container = new ArgumentContainer();
 container.Add(new VideoCodecArgument(VideoCodec.LibX264));
 container.Add(new ScaleArgument(VideoSize.Hd));
 
@@ -368,7 +368,7 @@ var ffmpeg = new FFMpeg();
 var result = ffmpeg.Convert(container, new FileInfo("input.mp4"), new FileInfo("output.mp4"));
 ```
 
-Other availible arguments could be found in `FFMpegCore.FFMPEG.Arguments` namespace.
+Other availible arguments could be found in `FFMpegCore.FFMPEG.Argument` namespace.
 
 If you need to create your custom argument, you just need to create new class, that is inherited from `Argument`, `Argument<T>` or `Argument<T1, T2>`
 For example: