diff --git a/src/net/java/sip/communicator/impl/neomedia/codec/audio/speex/JNIEncoder.java b/src/net/java/sip/communicator/impl/neomedia/codec/audio/speex/JNIEncoder.java
index 3804bfee0..ccde3bf9e 100644
--- a/src/net/java/sip/communicator/impl/neomedia/codec/audio/speex/JNIEncoder.java
+++ b/src/net/java/sip/communicator/impl/neomedia/codec/audio/speex/JNIEncoder.java
@@ -370,10 +370,10 @@ else if (inputLength < this.frameSize)
     }
 
     /**
-     * Get the matching output formats for a specific format.
+     * Get the output formats matching a specific input format.
      *
-     * @param inputFormat input format
-     * @return array for formats matching input format
+     * @param inputFormat the input format to get the matching output formats of
+     * @return the output formats matching the specified input format
      * @see AbstractCodecExt#getMatchingOutputFormats(Format)
      */
     @Override
diff --git a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/protocol/AbstractBufferCaptureDevice.java b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/protocol/AbstractBufferCaptureDevice.java
index a60083d09..822118638 100644
--- a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/protocol/AbstractBufferCaptureDevice.java
+++ b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/protocol/AbstractBufferCaptureDevice.java
@@ -764,8 +764,7 @@ public synchronized void start()
         if (!started)
         {
             if (!connected)
-                throw new IOException(
-                        getClass().getSimpleName() + " not connected");
+                throw new IOException(getClass().getName() + " not connected");
 
             doStart();
             started = true;
diff --git a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/AbstractRenderer.java b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/AbstractRenderer.java
new file mode 100644
index 000000000..6223945e7
--- /dev/null
+++ b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/AbstractRenderer.java
@@ -0,0 +1,69 @@
+/*
+ * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
+ *
+ * Distributable under LGPL license.
+ * See terms of license at gnu.org.
+ */
+package net.java.sip.communicator.impl.neomedia.jmfext.media.renderer;
+
+import javax.media.*;
+
+import net.java.sip.communicator.impl.neomedia.control.*;
+
+/**
+ * Provides an abstract base implementation of <tt>Renderer</tt> in order to
+ * facilitate extenders
+ *
+ * @author Lyubomir Marinov
+ *
+ * @param <InputFormatT> the type of <tt>Format</tt> of the media data processed
+ * as input by <tt>AbstractRenderer</tt> 
+ */
+public abstract class AbstractRenderer<InputFormatT extends Format>
+    extends ControlsAdapter
+    implements Renderer
+{
+    /**
+     * The <tt>Format</tt> of the media data processed as input by this
+     * <tt>Renderer</tt>.
+     */
+    protected InputFormatT inputFormat;
+
+    /**
+     * Resets the state of this <tt>PlugIn</tt>.
+     */
+    public void reset()
+    {
+        // TODO Auto-generated method stub
+    }
+
+    /**
+     * Sets the <tt>Format</tt> of the media data to be rendered by this
+     * <tt>Renderer</tt>.
+     *
+     * @param format the <tt>Format</tt> of the media data to be rendered by
+     * this <tt>Renderer</tt>
+     * @return <tt>null</tt> if the specified <tt>format</tt> is not compatible
+     * with this <tt>Renderer</tt>; otherwise, the <tt>Format</tt> which has
+     * been successfully set
+     */
+    @SuppressWarnings("unchecked")
+    public Format setInputFormat(Format format)
+    {
+        Format matchingFormat = null;
+
+        for (Format supportedInputFormat : getSupportedInputFormats())
+        {
+            if (supportedInputFormat.matches(format))
+            {
+                matchingFormat = supportedInputFormat.intersects(format);
+                break;
+            }
+        }
+        if (matchingFormat == null)
+            return null;
+
+        inputFormat = (InputFormatT) matchingFormat;
+        return inputFormat;
+    }
+}
diff --git a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/audio/PortAudioRenderer.java b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/audio/PortAudioRenderer.java
index 543c07b76..fb40f6f32 100644
--- a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/audio/PortAudioRenderer.java
+++ b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/audio/PortAudioRenderer.java
@@ -12,8 +12,8 @@
 import javax.media.format.*;
 
 import net.java.sip.communicator.impl.neomedia.*;
-import net.java.sip.communicator.impl.neomedia.control.*;
 import net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.portaudio.*;
+import net.java.sip.communicator.impl.neomedia.jmfext.media.renderer.*;
 import net.java.sip.communicator.impl.neomedia.portaudio.*;
 import net.java.sip.communicator.util.*;
 
@@ -24,8 +24,7 @@
  * @author Lyubomir Marinov
  */
 public class PortAudioRenderer
-    extends ControlsAdapter
-    implements Renderer
+    extends AbstractRenderer<AudioFormat>
 {
     /**
      * The <tt>Logger</tt> used by the <tt>PortAudioRenderer</tt> class and its
@@ -116,12 +115,6 @@ public class PortAudioRenderer
      */
     private int framesPerBuffer;
 
-    /**
-     * The JMF <tt>Format</tt> in which this <tt>PortAudioRenderer</tt> is
-     * currently configured to read the audio data to be rendered.
-     */
-    private AudioFormat inputFormat;
-
     /**
      * The <tt>MediaLocator</tt> which specifies the device index of the
      * PortAudio device used by this instance for rendering.
@@ -167,13 +160,18 @@ public PortAudioRenderer()
 
     /**
      * Initializes a new <tt>PortAudioRenderer</tt> instance.
-     * @param enableVolumeControl whether we enable volume control or not.
+     *
+     * @param enableVolumeControl <tt>true</tt> to enable volume control;
+     * <tt>false</tt>, otherwise
      */
     public PortAudioRenderer(boolean enableVolumeControl)
     {
         if(enableVolumeControl)
-            this.gainControl = (GainControl)NeomediaActivator
-                    .getMediaServiceImpl().getOutputVolumeControl();
+            this.gainControl
+                = (GainControl)
+                    NeomediaActivator
+                        .getMediaServiceImpl()
+                            .getOutputVolumeControl();
     }
 
     /**
@@ -207,6 +205,19 @@ public synchronized void close()
         }
     }
 
+    /**
+     * Implements {@link javax.media.Controls#getControls()}. Gets the controls
+     * available for the owner of this instance. The current implementation
+     * returns an empty array because it has no available controls.
+     *
+     * @return an array of <tt>Object</tt>s which represent the controls
+     * available for the owner of this instance
+     */
+    public Object[] getControls()
+    {
+        return new Object[] { gainControl };
+    }
+
     /**
      * Gets the <tt>MediaLocator</tt> which specifies the device index of the
      * PortAudio device used by this instance for rendering.
@@ -533,13 +544,6 @@ private void process(byte[] buffer, int offset, int length)
         }
     }
 
-    /**
-     * Resets this <tt>PlugIn</tt>.
-     */
-    public void reset()
-    {
-    }
-
     /**
      * Sets the <tt>MediaLocator</tt> which specifies the device index of the
      * PortAudio device to be used by <tt>PortAudioRenderer</tt> instances which
@@ -564,35 +568,6 @@ else if (PortAudioRenderer.defaultLocator.equals(defaultLocator))
         PortAudioRenderer.defaultLocator = defaultLocator;
     }
 
-    /**
-     * Sets the JMF <tt>Format</tt> of the audio data to be rendered by this
-     * <tt>Renderer</tt>.
-     *
-     * @param format the JMF <tt>Format</tt> of the audio data to be redered by
-     * this instance
-     * @return <tt>null</tt> if the specified <tt>format</tt> is not compatible
-     * with this <tt>Renderer</tt>; otherwise, the JMF <tt>Format</tt> which has
-     * been successfully set
-     */
-    public Format setInputFormat(Format format)
-    {
-        Format matchingFormat = null;
-
-        for (Format supportedInputFormat : getSupportedInputFormats())
-        {
-            if (supportedInputFormat.matches(format))
-            {
-                matchingFormat = supportedInputFormat.intersects(format);
-                break;
-            }
-        }
-        if (matchingFormat == null)
-            return null;
-
-        inputFormat = (AudioFormat) matchingFormat;
-        return inputFormat;
-    }
-
     /**
      * Sets the <tt>MediaLocator</tt> which specifies the device index of the
      * PortAudio device to be used by this instance for rendering.
@@ -671,17 +646,4 @@ public synchronized void stop()
             }
         }
     }
-
-    /**
-     * Implements {@link javax.media.Controls#getControls()}. Gets the controls
-     * available for the owner of this instance. The current implementation
-     * returns an empty array because it has no available controls.
-     *
-     * @return an array of <tt>Object</tt>s which represent the controls
-     * available for the owner of this instance
-     */
-    public Object[] getControls()
-    {
-        return new Object[]{gainControl};
-    }
 }
diff --git a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/video/JAWTRenderer.java b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/video/JAWTRenderer.java
index f11298af1..a363bd6ef 100644
--- a/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/video/JAWTRenderer.java
+++ b/src/net/java/sip/communicator/impl/neomedia/jmfext/media/renderer/video/JAWTRenderer.java
@@ -14,7 +14,7 @@
 import javax.media.renderer.*;
 import javax.swing.*;
 
-import net.java.sip.communicator.impl.neomedia.control.*;
+import net.java.sip.communicator.impl.neomedia.jmfext.media.renderer.*;
 import net.java.sip.communicator.util.*;
 
 /**
@@ -24,7 +24,7 @@
  * @author Lyubomir Marinov
  */
 public class JAWTRenderer
-    extends ControlsAdapter
+    extends AbstractRenderer<VideoFormat>
     implements VideoRenderer
 {
     /**
@@ -110,12 +110,6 @@ public class JAWTRenderer
      */
     private long handle = 0;
 
-    /**
-     * The <tt>VideoFormat</tt> of the input processed by this
-     * <tt>Renderer</tt>.
-     */
-    private VideoFormat inputFormat;
-
     /**
      * The last known height of the input processed by this
      * <tt>JAWTRenderer</tt>.
@@ -497,14 +491,6 @@ static native void processLightweightComponentEvent(
     static native void removeNotifyLightweightComponent(
             long handle, Component component);
 
-    /**
-     * Resets the state of this <tt>PlugIn</tt>.
-     */
-    public void reset()
-    {
-        // TODO Auto-generated method stub
-    }
-
     /**
      * Sets the region in the component of this <tt>VideoRenderer</tt> where the
      * video is to be rendered.
@@ -547,22 +533,10 @@ public boolean setComponent(Component component)
      * <tt>Renderer</tt>. Typically, it is the supported input <tt>Format</tt>
      * which most closely matches the specified <tt>Format</tt>.
      */
+    @Override
     public Format setInputFormat(Format format)
     {
-        Format matchingFormat = null;
-
-        for (Format supportedInputFormat : getSupportedInputFormats())
-        {
-            if (supportedInputFormat.matches(format))
-            {
-                matchingFormat = supportedInputFormat.intersects(format);
-                break;
-            }
-        }
-        if (matchingFormat == null)
-            return null;
-
-        inputFormat = (VideoFormat) format;
+        super.setInputFormat(format);
 
         /*
          * Know the width and height of the input because we'll be depicting it