Fixed double thread start problem.

src/osgPlugins/mpeg/MpegImageStream.cpp

@@ -57,8 +57,6 @@ MpegImageStream::MpegImageStream(const char* fileName) : ImageStream()
 
     if (fileName)
         setFileName(fileName);
-
-    startThread();
 }
 
 
@@ -269,6 +267,7 @@ void MpegImageStream::run()
                              0, 0, _s, _t,
                              _s, _t,
                              MPEG3_RGB888, str);
+
             dirty(); //Image();
             
             ++frameNumber;

src/osgPlugins/mpeg/MpegImageStream.h

@@ -52,7 +52,12 @@ namespace osg {
         virtual const char* className() const { return "MpegImageStream"; }
 
         /// Start or continue stream.
-        virtual void play() { setCmd(THREAD_START); }
+        virtual void play()
+        {
+            if (!isRunning()) start();
+            
+            setCmd(THREAD_START);
+        }
 
         /// Pause stream at current position.
         virtual void pause() { setCmd(THREAD_STOP); }

src/osgPlugins/mpeg/ReaderWriterMPEG.cpp

@@ -30,7 +30,7 @@ class ReaderWriterMPEG : public osgDB::ReaderWriter
             if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
 
             osg::MpegImageStream* mpeg = new osg::MpegImageStream(fileName.c_str());
-            mpeg->start();
+            mpeg->play();
             
             return mpeg;
         }