diff --git a/source/SubWindowHandle.h b/source/SubWindowHandle.h
index 8a25db0..aa86c75 100644
--- a/source/SubWindowHandle.h
+++ b/source/SubWindowHandle.h
@@ -64,6 +64,11 @@ public:
 
   bool playEvent();
 
+  InputStream* getInputStream()
+  {
+    return &m_currStream;
+  }
+
   /**
    * Show the image at its original size
    */
diff --git a/source/plaYUVerApp.cpp b/source/plaYUVerApp.cpp
index 61338ab..f4c1d96 100644
--- a/source/plaYUVerApp.cpp
+++ b/source/plaYUVerApp.cpp
@@ -132,8 +132,13 @@ void plaYUVerApp::save()
 
 void plaYUVerApp::play()
 {
+  UInt frameRate;
+  UInt timeInterval;
 
-  playingTimer->start( 200 );
+  frameRate = activeImageInterface()->getInputStream()->getFrameRate();
+  timeInterval = (UInt)( 1000.0/frameRate + 0.5 );
+
+  playingTimer->start( timeInterval );
 
 }