diff --git a/FFMpegCore/Extend/BitmapVideoFrameWrapper.cs b/FFMpegCore/Extend/BitmapVideoFrameWrapper.cs
index e2f0737..36790d4 100644
--- a/FFMpegCore/Extend/BitmapVideoFrameWrapper.cs
+++ b/FFMpegCore/Extend/BitmapVideoFrameWrapper.cs
@@ -1,10 +1,11 @@
-using System;
+using FFMpegCore.Pipes;
+using System;
 using System.Drawing;
 using System.Drawing.Imaging;
+using System.IO;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
-using FFMpegCore.Pipes;
 
 namespace FFMpegCore.Extend
 {
@@ -24,7 +25,7 @@ public BitmapVideoFrameWrapper(Bitmap bitmap)
             Format = ConvertStreamFormat(bitmap.PixelFormat);
         }
 
-        public void Serialize(System.IO.Stream stream)
+        public void Serialize(Stream stream)
         {
             var data = Source.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadOnly, Source.PixelFormat);
 
@@ -40,7 +41,7 @@ public void Serialize(System.IO.Stream stream)
             }
         }
 
-        public async Task SerializeAsync(System.IO.Stream stream, CancellationToken token)
+        public async Task SerializeAsync(Stream stream, CancellationToken token)
         {
             var data = Source.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadOnly, Source.PixelFormat);
 
diff --git a/FFMpegCore/FFMpeg/Pipes/IPipeSink.cs b/FFMpegCore/FFMpeg/Pipes/IPipeSink.cs
index 875407e..e5f2bf4 100644
--- a/FFMpegCore/FFMpeg/Pipes/IPipeSink.cs
+++ b/FFMpegCore/FFMpeg/Pipes/IPipeSink.cs
@@ -1,11 +1,12 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
 {
     public interface IPipeSink
     {
-        Task ReadAsync(System.IO.Stream inputStream, CancellationToken cancellationToken);
+        Task ReadAsync(Stream inputStream, CancellationToken cancellationToken);
         string GetFormat();
     }
 }
diff --git a/FFMpegCore/FFMpeg/Pipes/IPipeSource.cs b/FFMpegCore/FFMpeg/Pipes/IPipeSource.cs
index cdd5139..c250421 100644
--- a/FFMpegCore/FFMpeg/Pipes/IPipeSource.cs
+++ b/FFMpegCore/FFMpeg/Pipes/IPipeSource.cs
@@ -1,4 +1,5 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
@@ -9,6 +10,6 @@ namespace FFMpegCore.Pipes
     public interface IPipeSource
     {
         string GetStreamArguments();
-        Task WriteAsync(System.IO.Stream outputStream, CancellationToken cancellationToken);
+        Task WriteAsync(Stream outputStream, CancellationToken cancellationToken);
     }
 }
diff --git a/FFMpegCore/FFMpeg/Pipes/IVideoFrame.cs b/FFMpegCore/FFMpeg/Pipes/IVideoFrame.cs
index 094040b..dd583d9 100644
--- a/FFMpegCore/FFMpeg/Pipes/IVideoFrame.cs
+++ b/FFMpegCore/FFMpeg/Pipes/IVideoFrame.cs
@@ -1,4 +1,5 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
@@ -12,7 +13,7 @@ public interface IVideoFrame
         int Height { get; }
         string Format { get; }
 
-        void Serialize(System.IO.Stream pipe);
-        Task SerializeAsync(System.IO.Stream pipe, CancellationToken token);
+        void Serialize(Stream pipe);
+        Task SerializeAsync(Stream pipe, CancellationToken token);
     }
 }
diff --git a/FFMpegCore/FFMpeg/Pipes/RawVideoPipeSource.cs b/FFMpegCore/FFMpeg/Pipes/RawVideoPipeSource.cs
index 65f622e..0e3ab61 100644
--- a/FFMpegCore/FFMpeg/Pipes/RawVideoPipeSource.cs
+++ b/FFMpegCore/FFMpeg/Pipes/RawVideoPipeSource.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
+using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
 using FFMpegCore.Exceptions;
@@ -46,7 +47,7 @@ public string GetStreamArguments()
             return $"-f rawvideo -r {FrameRate.ToString(CultureInfo.InvariantCulture)} -pix_fmt {StreamFormat} -s {Width}x{Height}";
         }
 
-        public async Task WriteAsync(System.IO.Stream outputStream, CancellationToken cancellationToken)
+        public async Task WriteAsync(Stream outputStream, CancellationToken cancellationToken)
         {
             if (_framesEnumerator.Current != null)
             {
diff --git a/FFMpegCore/FFMpeg/Pipes/StreamPipeSink.cs b/FFMpegCore/FFMpeg/Pipes/StreamPipeSink.cs
index cd13f40..addc14e 100644
--- a/FFMpegCore/FFMpeg/Pipes/StreamPipeSink.cs
+++ b/FFMpegCore/FFMpeg/Pipes/StreamPipeSink.cs
@@ -20,7 +20,7 @@ public StreamPipeSink(Stream destination)
             Writer = (inputStream, cancellationToken) => inputStream.CopyToAsync(destination, BlockSize, cancellationToken);
         }
 
-        public Task ReadAsync(System.IO.Stream inputStream, CancellationToken cancellationToken) 
+        public Task ReadAsync(Stream inputStream, CancellationToken cancellationToken) 
             => Writer(inputStream, cancellationToken);
 
         public string GetFormat() => Format;
diff --git a/FFMpegCore/FFMpeg/Pipes/StreamPipeSource.cs b/FFMpegCore/FFMpeg/Pipes/StreamPipeSource.cs
index 404029f..87eaee7 100644
--- a/FFMpegCore/FFMpeg/Pipes/StreamPipeSource.cs
+++ b/FFMpegCore/FFMpeg/Pipes/StreamPipeSource.cs
@@ -1,4 +1,5 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
@@ -19,6 +20,6 @@ public StreamPipeSource(System.IO.Stream source)
 
         public string GetStreamArguments() => StreamFormat;
 
-        public Task WriteAsync(System.IO.Stream outputStream, CancellationToken cancellationToken) => Source.CopyToAsync(outputStream, BlockSize, cancellationToken);
+        public Task WriteAsync(Stream outputStream, CancellationToken cancellationToken) => Source.CopyToAsync(outputStream, BlockSize, cancellationToken);
     }
 }