Do not auto-play playlist and multitrack projects.

src/mainwindow.cpp

@@ -588,6 +588,8 @@ void MainWindow::open(Mlt::Producer* producer)
     if (ok && screen != QApplication::desktop()->screenNumber(this))
         m_player->moveVideoToScreen(screen);
 
+    m_player->setPauseAfterOpen(!MLT.isClip());
+
     // no else here because open() will delete the producer if open fails
     if (!MLT.setProducer(producer))
         emit producerOpened();
@@ -1541,7 +1543,6 @@ void MainWindow::onPlaylistCleared()
 void MainWindow::onPlaylistClosed()
 {
     m_player->resetProfile();
-    onPlaylistCleared();
     setCurrentFile("");
     setWindowModified(false);
     m_undoStack->clear();

src/mltcontroller.cpp

@@ -375,9 +375,13 @@ void Controller::seek(int position)
 {
     if (m_producer) {
         m_producer->set_speed(0);
-        if (m_consumer && m_consumer->is_valid())
-            m_consumer->purge();
         m_producer->seek(position);
+        if (m_consumer && m_consumer->is_valid()) {
+            if (m_consumer->is_stopped())
+                m_consumer->start();
+            else
+                m_consumer->purge();
+        }
     }
     if (m_jackFilter)
         mlt_events_fire(m_jackFilter->get_properties(), "jack-seek", &position, NULL);

src/player.cpp

@@ -441,17 +441,21 @@ void Player::onProducerOpened(bool play)
     // calling play() here. Delays while purging the consumer on pause can
     // interfere with the play() call. So, we delay play a little to let
     // pause purging to complete.
-    if (play)
-        QTimer::singleShot(500, this, SLOT(postProducerOpened()));
+    if (play) {
+        if (m_pauseAfterOpen) {
+            m_pauseAfterOpen = false;
+            QTimer::singleShot(500, this, SLOT(postProducerOpened()));
+        } else {
+            // This seek purges the consumer to prevent latent end-of-stream detection.
+            seek(0);
+            QTimer::singleShot(500, this, SLOT(play()));
+        }
+    }
 }
 
 void Player::postProducerOpened()
 {
-    play();
-    if (m_pauseAfterOpen) {
-        m_pauseAfterOpen = false;
-        seek(MLT.producer()->position());
-    }
+    seek(MLT.producer()->position());
 }
 
 void Player::onMeltedUnitOpened()