diff --git a/app/core.cpp b/app/core.cpp
index 6b0cebd5c..e29811114 100644
--- a/app/core.cpp
+++ b/app/core.cpp
@@ -396,9 +396,6 @@ void Core::CreateNewSequence()
   // Create new sequence
   Sequence* new_sequence = CreateNewSequenceForProject(active_project);
 
-  // Set all defaults for the sequence
-  new_sequence->set_default_parameters();
-
   SequenceDialog sd(new_sequence, SequenceDialog::kNew, main_window_);
 
   // Make sure SequenceDialog doesn't make an undo command for editing the sequence, since we make an undo command for
@@ -1091,6 +1088,11 @@ void Core::OpenRecoveryProject(const QString &filename)
   OpenProjectInternal(filename, true);
 }
 
+void Core::OpenNodeInViewer(ViewerOutput *viewer)
+{
+  main_window_->OpenNodeInViewer(viewer);
+}
+
 void Core::CheckForAutoRecoveries()
 {
   QFile autorecovery_index(GetAutoRecoveryIndexFilename());
diff --git a/app/core.h b/app/core.h
index 4824a275d..38051c56b 100644
--- a/app/core.h
+++ b/app/core.h
@@ -300,6 +300,8 @@ public:
 
   void OpenRecoveryProject(const QString& filename);
 
+  void OpenNodeInViewer(ViewerOutput* viewer);
+
   static const uint kProjectVersion;
 
 public slots:
diff --git a/app/node/graph.cpp b/app/node/graph.cpp
index f76f390b4..6e5055903 100644
--- a/app/node/graph.cpp
+++ b/app/node/graph.cpp
@@ -61,6 +61,7 @@ void NodeGraph::childEvent(QChildEvent *event)
       connect(node, &Node::ValueChanged, this, &NodeGraph::ValueChanged);
 
       emit NodeAdded(node);
+      emit node->AddedToGraph(this);
 
     } else if (event->type() == QEvent::ChildRemoved) {
 
@@ -72,6 +73,7 @@ void NodeGraph::childEvent(QChildEvent *event)
       disconnect(node, &Node::ValueChanged, this, &NodeGraph::ValueChanged);
 
       emit NodeRemoved(node);
+      emit node->RemovedFromGraph(this);
 
     }
   }
diff --git a/app/node/node.h b/app/node/node.h
index 86e4d2f54..74d1b1fd8 100644
--- a/app/node/node.h
+++ b/app/node/node.h
@@ -926,6 +926,10 @@ signals:
 
   void InputDataTypeChanged(const QString& id, NodeValue::Type type);
 
+  void AddedToGraph(NodeGraph* graph);
+
+  void RemovedFromGraph(NodeGraph* graph);
+
 private:
   class ArrayInsertCommand : public UndoCommand
   {
diff --git a/app/node/output/track/track.h b/app/node/output/track/track.h
index 4dd6eebd7..271fbf36d 100644
--- a/app/node/output/track/track.h
+++ b/app/node/output/track/track.h
@@ -160,13 +160,15 @@ public:
 
     static Type TypeFromString(const QString& s)
     {
-      if (s.at(1) == ':') {
-        if (s.at(0) == 'v') {
-          // Video stream
-          return Track::kVideo;
-        } else if (s.at(0) == 'a') {
-          // Audio stream
-          return Track::kAudio;
+      if (s.size() >= 3) {
+        if (s.at(1) == ':') {
+          if (s.at(0) == 'v') {
+            // Video stream
+            return Track::kVideo;
+          } else if (s.at(0) == 'a') {
+            // Audio stream
+            return Track::kAudio;
+          }
         }
       }
 
diff --git a/app/node/output/viewer/viewer.cpp b/app/node/output/viewer/viewer.cpp
index 81c89b383..3543e6fdd 100644
--- a/app/node/output/viewer/viewer.cpp
+++ b/app/node/output/viewer/viewer.cpp
@@ -54,6 +54,7 @@ ViewerOutput::ViewerOutput(bool create_default_streams) :
   if (create_default_streams) {
     AddStream(Track::kVideo, QVariant());
     AddStream(Track::kAudio, QVariant());
+    set_default_parameters();
   }
 }
 
@@ -302,39 +303,19 @@ void ViewerOutput::Retranslate()
 
 void ViewerOutput::VerifyLength()
 {
-  NodeTraverser traverser;
-
   rational video_length, audio_length, subtitle_length;
 
-  {
-    video_length = GetCustomLength(Track::kVideo);
-
-    if (video_length.isNull() && IsInputConnected(kTextureInput)) {
-      NodeValueTable t = traverser.GenerateTable(GetConnectedOutput(kTextureInput), TimeRange(0, 0));
-      video_length = t.Get(NodeValue::kRational, QStringLiteral("length")).value<rational>();
-    }
-
-    if (cache_enabled_) {
-      video_frame_cache_.SetLength(video_length);
-    }
+  video_length = VerifyLengthInternal(Track::kVideo);
+  if (cache_enabled_) {
+    video_frame_cache_.SetLength(video_length);
   }
 
-  {
-    audio_length = GetCustomLength(Track::kAudio);
-
-    if (audio_length.isNull() && IsInputConnected(kSamplesInput)) {
-      NodeValueTable t = traverser.GenerateTable(GetConnectedOutput(kSamplesInput), TimeRange(0, 0));
-      audio_length = t.Get(NodeValue::kRational, QStringLiteral("length")).value<rational>();
-    }
-
-    if (cache_enabled_) {
-      audio_playback_cache_.SetLength(audio_length);
-    }
+  audio_length = VerifyLengthInternal(Track::kAudio);
+  if (cache_enabled_) {
+    audio_playback_cache_.SetLength(audio_length);
   }
 
-  {
-    subtitle_length = GetCustomLength(Track::kSubtitle);
-  }
+  subtitle_length = VerifyLengthInternal(Track::kSubtitle);
 
   rational real_length = qMax(subtitle_length, qMax(video_length, audio_length));
 
@@ -362,9 +343,30 @@ void ViewerOutput::InputDisconnectedEvent(const QString &input, int element, con
   super::InputDisconnectedEvent(input, element, output);
 }
 
-rational ViewerOutput::GetCustomLength(Track::Type type) const
+rational ViewerOutput::VerifyLengthInternal(Track::Type type) const
 {
-  Q_UNUSED(type)
+  NodeTraverser traverser;
+
+  switch (type) {
+  case Track::kVideo:
+    if (IsInputConnected(kTextureInput)) {
+      NodeValueTable t = traverser.GenerateTable(GetConnectedOutput(kTextureInput), TimeRange(0, 0));
+      qDebug() << "Got video length:" << t.Get(NodeValue::kRational, QStringLiteral("length")).value<rational>();
+      return t.Get(NodeValue::kRational, QStringLiteral("length")).value<rational>();
+    }
+    break;
+  case Track::kAudio:
+    if (IsInputConnected(kSamplesInput)) {
+      NodeValueTable t = traverser.GenerateTable(GetConnectedOutput(kSamplesInput), TimeRange(0, 0));
+      return t.Get(NodeValue::kRational, QStringLiteral("length")).value<rational>();
+    }
+    break;
+  case Track::kNone:
+  case Track::kSubtitle:
+  case Track::kCount:
+    break;
+  }
+
   return rational();
 }
 
diff --git a/app/node/output/viewer/viewer.h b/app/node/output/viewer/viewer.h
index a56602b49..a7fc6dc06 100644
--- a/app/node/output/viewer/viewer.h
+++ b/app/node/output/viewer/viewer.h
@@ -174,7 +174,7 @@ protected:
 
   virtual void InputDisconnectedEvent(const QString &input, int element, const NodeOutput &output) override;
 
-  virtual rational GetCustomLength(Track::Type type) const;
+  virtual rational VerifyLengthInternal(Track::Type type) const;
 
   virtual void ShiftVideoEvent(const rational &from, const rational &to);
 
diff --git a/app/node/project/footage/footage.cpp b/app/node/project/footage/footage.cpp
index 8344cca0d..fef4cf4fb 100644
--- a/app/node/project/footage/footage.cpp
+++ b/app/node/project/footage/footage.cpp
@@ -180,7 +180,7 @@ void Footage::InputValueChangedEvent(const QString &input, int element)
   }
 }
 
-rational Footage::GetCustomLength(Track::Type type) const
+rational Footage::VerifyLengthInternal(Track::Type type) const
 {
   if (type == Track::kVideo) {
     VideoParams first_stream = GetFirstEnabledVideoStream();
@@ -196,7 +196,7 @@ rational Footage::GetCustomLength(Track::Type type) const
     }
   }
 
-  return super::GetCustomLength(type);
+  return super::VerifyLengthInternal(type);
 }
 
 QString Footage::GetColorspaceToUse(const VideoParams &params) const
diff --git a/app/node/project/footage/footage.h b/app/node/project/footage/footage.h
index 153880987..bed9a1d63 100644
--- a/app/node/project/footage/footage.h
+++ b/app/node/project/footage/footage.h
@@ -58,7 +58,7 @@ public:
 
   virtual QString Name() const override
   {
-    return tr("Footage");
+    return tr("Media");
   }
 
   virtual QString id() const override
@@ -195,7 +195,7 @@ protected:
 
   virtual void InputValueChangedEvent(const QString &input, int element) override;
 
-  virtual rational GetCustomLength(Track::Type type) const override;
+  virtual rational VerifyLengthInternal(Track::Type type) const override;
 
 private:
   QString GetColorspaceToUse(const VideoParams& params) const;
diff --git a/app/node/project/projectviewmodel.cpp b/app/node/project/projectviewmodel.cpp
index 08c0b773f..9804b74a9 100644
--- a/app/node/project/projectviewmodel.cpp
+++ b/app/node/project/projectviewmodel.cpp
@@ -430,9 +430,6 @@ void ProjectViewModel::ConnectItem(Node *n)
     connect(f, &Folder::BeginRemoveItem, this, &ProjectViewModel::FolderBeginRemoveItem);
     connect(f, &Folder::EndRemoveItem, this, &ProjectViewModel::FolderEndRemoveItem);
 
-    connect(f, &Folder::BeginInsertItem, this, &ProjectViewModel::ItemAdded);
-    connect(f, &Folder::BeginRemoveItem, this, &ProjectViewModel::ItemRemoved);
-
     foreach (Node* c, f->children()) {
       ConnectItem(c);
     }
@@ -450,9 +447,6 @@ void ProjectViewModel::DisconnectItem(Node *n)
     disconnect(f, &Folder::BeginRemoveItem, this, &ProjectViewModel::FolderBeginRemoveItem);
     disconnect(f, &Folder::EndRemoveItem, this, &ProjectViewModel::FolderEndRemoveItem);
 
-    disconnect(f, &Folder::BeginInsertItem, this, &ProjectViewModel::ItemAdded);
-    disconnect(f, &Folder::BeginRemoveItem, this, &ProjectViewModel::ItemRemoved);
-
     foreach (Node* c, f->children()) {
       DisconnectItem(c);
     }
diff --git a/app/node/project/projectviewmodel.h b/app/node/project/projectviewmodel.h
index 1e396746a..9a57c80da 100644
--- a/app/node/project/projectviewmodel.h
+++ b/app/node/project/projectviewmodel.h
@@ -104,11 +104,6 @@ public:
    */
   QModelIndex CreateIndexFromItem(Node *item, int column = 0);
 
-signals:
-  void ItemAdded(Node* node);
-
-  void ItemRemoved(Node* node);
-
 private:
   /**
    * @brief Retrieve the index of `item` in its parent
diff --git a/app/node/project/sequence/sequence.cpp b/app/node/project/sequence/sequence.cpp
index b6c2f1653..3e7659dd7 100644
--- a/app/node/project/sequence/sequence.cpp
+++ b/app/node/project/sequence/sequence.cpp
@@ -107,7 +107,7 @@ void Sequence::Retranslate()
   }
 }
 
-rational Sequence::GetCustomLength(Track::Type type) const
+rational Sequence::VerifyLengthInternal(Track::Type type) const
 {
   if (!track_lists_.isEmpty()) {
     switch (type) {
diff --git a/app/node/project/sequence/sequence.h b/app/node/project/sequence/sequence.h
index c644bdc3f..6b2c1d0ac 100644
--- a/app/node/project/sequence/sequence.h
+++ b/app/node/project/sequence/sequence.h
@@ -103,7 +103,7 @@ protected:
 
   virtual void InputDisconnectedEvent(const QString &input, int element, const NodeOutput &output) override;
 
-  virtual rational GetCustomLength(Track::Type type) const override;
+  virtual rational VerifyLengthInternal(Track::Type type) const override;
 
 signals:
   void TrackAdded(Track* track);
diff --git a/app/node/value.cpp b/app/node/value.cpp
index 6ab6cd5cf..f3ec8655c 100644
--- a/app/node/value.cpp
+++ b/app/node/value.cpp
@@ -382,14 +382,26 @@ NodeValueTable NodeValueTable::Merge(QList<NodeValueTable> tables)
   NodeValueTable merged_table;
 
   // Slipstreams all tables together
-  foreach (const NodeValueTable& t, tables) {
-    if (row >= t.Count()) {
-      continue;
+  while (true) {
+    bool all_merged = true;
+
+    foreach (const NodeValueTable& t, tables) {
+      if (row < t.Count()) {
+        all_merged = false;
+      } else {
+        continue;
+      }
+
+      int row_index = t.Count() - 1 - row;
+
+      merged_table.Prepend(t.at(row_index));
     }
 
-    int row_index = t.Count() - 1 - row;
+    row++;
 
-    merged_table.Prepend(t.at(row_index));
+    if (all_merged) {
+      break;
+    }
   }
 
   return merged_table;
diff --git a/app/panel/project/project.cpp b/app/panel/project/project.cpp
index c580d4f14..a56e2ea82 100644
--- a/app/panel/project/project.cpp
+++ b/app/panel/project/project.cpp
@@ -57,7 +57,6 @@ ProjectPanel::ProjectPanel(QWidget *parent) :
   explorer_ = new ProjectExplorer(this);
   layout->addWidget(explorer_);
   connect(explorer_, &ProjectExplorer::DoubleClickedItem, this, &ProjectPanel::ItemDoubleClickSlot);
-  connect(explorer_, &ProjectExplorer::ItemRemoved, this, &ProjectPanel::ItemRemoved);
 
   // Set toolbar's view to the explorer's view
   toolbar->SetView(explorer_->view_type());
@@ -233,16 +232,6 @@ void ProjectPanel::SaveConnectedProject()
   Core::instance()->SaveProject(this->project());
 }
 
-void ProjectPanel::ItemRemoved(Node *item)
-{
-  // Open this footage in a FootageViewer
-  FootageViewerPanel* panel = PanelManager::instance()->MostRecentlyFocused<FootageViewerPanel>();
-
-  if (panel->GetConnectedViewer() == item) {
-    panel->DisconnectViewerNode();
-  }
-}
-
 QVector<ViewerOutput *> ProjectPanel::GetSelectedFootage() const
 {
   QVector<Node*> items = SelectedItems();
diff --git a/app/panel/project/project.h b/app/panel/project/project.h
index c16c36bd7..c8a8c2aef 100644
--- a/app/panel/project/project.h
+++ b/app/panel/project/project.h
@@ -80,8 +80,6 @@ private slots:
 
   void SaveConnectedProject();
 
-  void ItemRemoved(Node* item);
-
 };
 
 }
diff --git a/app/panel/viewer/viewer.cpp b/app/panel/viewer/viewer.cpp
index a79f09b52..f5faf418c 100644
--- a/app/panel/viewer/viewer.cpp
+++ b/app/panel/viewer/viewer.cpp
@@ -25,13 +25,13 @@ namespace olive {
 ViewerPanel::ViewerPanel(const QString &object_name, QWidget *parent) :
   ViewerPanelBase(object_name, parent)
 {
-  // Set ViewerWidget as the central widget
-  ViewerWidget* vw = new ViewerWidget();
-  connect(vw, &ViewerWidget::RequestScopePanel, this, &ViewerPanel::CreateScopePanel);
-  SetTimeBasedWidget(vw);
+  Init();
+}
 
-  // Set strings
-  Retranslate();
+ViewerPanel::ViewerPanel(QWidget *parent) :
+  ViewerPanelBase(QStringLiteral("ViewerPanel"), parent)
+{
+  Init();
 }
 
 void ViewerPanel::Retranslate()
@@ -41,4 +41,15 @@ void ViewerPanel::Retranslate()
   SetTitle(tr("Viewer"));
 }
 
+void ViewerPanel::Init()
+{
+  // Set ViewerWidget as the central widget
+  ViewerWidget* vw = new ViewerWidget();
+  connect(vw, &ViewerWidget::RequestScopePanel, this, &ViewerPanel::CreateScopePanel);
+  SetTimeBasedWidget(vw);
+
+  // Set strings
+  Retranslate();
+}
+
 }
diff --git a/app/panel/viewer/viewer.h b/app/panel/viewer/viewer.h
index 9d83e0c97..3de6172d3 100644
--- a/app/panel/viewer/viewer.h
+++ b/app/panel/viewer/viewer.h
@@ -34,10 +34,14 @@ class ViewerPanel : public ViewerPanelBase {
   Q_OBJECT
 public:
   ViewerPanel(const QString& object_name, QWidget* parent);
+  ViewerPanel(QWidget* parent);
 
 protected:
   virtual void Retranslate() override;
 
+private:
+  void Init();
+
 };
 
 }
diff --git a/app/widget/nodeview/nodeview.cpp b/app/widget/nodeview/nodeview.cpp
index 94028868b..7582ac5d2 100644
--- a/app/widget/nodeview/nodeview.cpp
+++ b/app/widget/nodeview/nodeview.cpp
@@ -668,6 +668,13 @@ void NodeView::ShowContextMenu(const QPoint &pos)
     QAction* autopos = m.addAction(tr("Auto-Position"));
     connect(autopos, &QAction::triggered, this, &NodeView::AutoPositionDescendents);
 
+    ViewerOutput* viewer = dynamic_cast<ViewerOutput*>(selected.first()->GetNode());
+    if (viewer) {
+      m.addSeparator();
+      QAction* open_in_viewer_action = m.addAction(tr("Open in Viewer"));
+      connect(open_in_viewer_action, &QAction::triggered, this, &NodeView::OpenSelectedNodeInViewer);
+    }
+
   } else {
 
     QAction* curved_action = m.addAction(tr("Smooth Edges"));
@@ -756,6 +763,16 @@ void NodeView::ContextMenuFilterChanged(QAction *action)
   Q_UNUSED(action)
 }
 
+void NodeView::OpenSelectedNodeInViewer()
+{
+  QVector<Node*> selected = scene_.GetSelectedNodes();
+  ViewerOutput* viewer = selected.isEmpty() ? nullptr : dynamic_cast<ViewerOutput*>(selected.first());
+
+  if (viewer) {
+    Core::instance()->OpenNodeInViewer(viewer);
+  }
+}
+
 void NodeView::AttachNodesToCursor(const QVector<Node *> &nodes)
 {
   QVector<NodeViewItem*> items(nodes.size());
diff --git a/app/widget/nodeview/nodeview.h b/app/widget/nodeview/nodeview.h
index 792d697b2..e01376419 100644
--- a/app/widget/nodeview/nodeview.h
+++ b/app/widget/nodeview/nodeview.h
@@ -194,6 +194,11 @@ private slots:
    */
   void ContextMenuFilterChanged(QAction* action);
 
+  /**
+   * @brief Opens the selected node in a Viewer
+   */
+  void OpenSelectedNodeInViewer();
+
 };
 
 }
diff --git a/app/widget/projectexplorer/projectexplorer.cpp b/app/widget/projectexplorer/projectexplorer.cpp
index 3c870caba..dddf8abff 100644
--- a/app/widget/projectexplorer/projectexplorer.cpp
+++ b/app/widget/projectexplorer/projectexplorer.cpp
@@ -95,8 +95,6 @@ ProjectExplorer::ProjectExplorer(QWidget *parent) :
   connect(tree_view_, &ProjectExplorerTreeView::customContextMenuRequested, this, &ProjectExplorer::ShowContextMenu);
   connect(list_view_, &ProjectExplorerListView::customContextMenuRequested, this, &ProjectExplorer::ShowContextMenu);
   connect(icon_view_, &ProjectExplorerIconView::customContextMenuRequested, this, &ProjectExplorer::ShowContextMenu);
-
-  connect(&model_, &ProjectViewModel::ItemRemoved, this, &ProjectExplorer::ItemRemoved);
 }
 
 const ProjectToolbar::ViewType &ProjectExplorer::view_type() const
diff --git a/app/widget/projectexplorer/projectexplorer.h b/app/widget/projectexplorer/projectexplorer.h
index 190faa510..5602a7e23 100644
--- a/app/widget/projectexplorer/projectexplorer.h
+++ b/app/widget/projectexplorer/projectexplorer.h
@@ -100,8 +100,6 @@ signals:
    */
   void DoubleClickedItem(Node* item);
 
-  void ItemRemoved(Node* node);
-
 private:
   /**
    * @brief Get all the blocks that solely rely on an input node
diff --git a/app/widget/timebased/timebasedwidget.cpp b/app/widget/timebased/timebasedwidget.cpp
index d65ccacfc..34c2a6e6f 100644
--- a/app/widget/timebased/timebasedwidget.cpp
+++ b/app/widget/timebased/timebasedwidget.cpp
@@ -85,6 +85,7 @@ void TimeBasedWidget::ConnectViewerNode(ViewerOutput *node)
 
     // Disconnect length changed signal
     disconnect(viewer_node_, &ViewerOutput::LengthChanged, this, &TimeBasedWidget::UpdateMaximumScroll);
+    disconnect(viewer_node_, &ViewerOutput::RemovedFromGraph, this, &TimeBasedWidget::ConnectedNodeRemovedFromGraph);
 
     // Disconnect rate change signals if they were connected
     disconnect(viewer_node_, &ViewerOutput::FrameRateChanged, this, &TimeBasedWidget::AutoUpdateTimebase);
@@ -109,6 +110,7 @@ void TimeBasedWidget::ConnectViewerNode(ViewerOutput *node)
   if (viewer_node_) {
     // Connect length changed signal
     connect(viewer_node_, &ViewerOutput::LengthChanged, this, &TimeBasedWidget::UpdateMaximumScroll);
+    connect(viewer_node_, &ViewerOutput::RemovedFromGraph, this, &TimeBasedWidget::ConnectedNodeRemovedFromGraph);
 
     // Connect ruler and scrollbar to timeline points
     ruler()->ConnectTimelinePoints(viewer_node_->GetTimelinePoints());
@@ -216,6 +218,11 @@ void TimeBasedWidget::AutoUpdateTimebase()
   }
 }
 
+void TimeBasedWidget::ConnectedNodeRemovedFromGraph()
+{
+  ConnectViewerNode(nullptr);
+}
+
 TimeRuler *TimeBasedWidget::ruler() const
 {
   return ruler_;
diff --git a/app/widget/timebased/timebasedwidget.h b/app/widget/timebased/timebasedwidget.h
index 562b36a47..9429635c4 100644
--- a/app/widget/timebased/timebasedwidget.h
+++ b/app/widget/timebased/timebasedwidget.h
@@ -230,6 +230,8 @@ private slots:
 
   void AutoUpdateTimebase();
 
+  void ConnectedNodeRemovedFromGraph();
+
 };
 
 }
diff --git a/app/window/mainwindow/mainwindow.cpp b/app/window/mainwindow/mainwindow.cpp
index 8cc4c3e1e..b25993dd3 100644
--- a/app/window/mainwindow/mainwindow.cpp
+++ b/app/window/mainwindow/mainwindow.cpp
@@ -261,6 +261,27 @@ ScopePanel *MainWindow::AppendScopePanel()
   return AppendFloatingPanelInternal<ScopePanel>(scope_panels_);
 }
 
+void MainWindow::OpenNodeInViewer(ViewerOutput *node)
+{
+  if (viewer_panels_.contains(node)) {
+    // This node already has a viewer, raise it
+    viewer_panels_.value(node)->raise();
+  } else {
+    // Create a viewer for this node
+    ViewerPanel* viewer = PanelManager::instance()->CreatePanel<ViewerPanel>(this);
+
+    viewer->SetSignalInsteadOfClose(true);
+    viewer->setFloating(true);
+    viewer->setVisible(true);
+    viewer->ConnectViewerNode(node);
+
+    connect(viewer, &ViewerPanel::CloseRequested, this, &MainWindow::ViewerCloseRequested);
+    connect(node, &ViewerOutput::RemovedFromGraph, this, &MainWindow::ViewerWithPanelRemovedFromGraph);
+
+    viewer_panels_.insert(node, viewer);
+  }
+}
+
 void MainWindow::SetFullscreen(bool fullscreen)
 {
   if (fullscreen) {
@@ -481,6 +502,22 @@ void MainWindow::ProjectCloseRequested()
   Core::instance()->CloseProject(p, true);
 }
 
+void MainWindow::ViewerCloseRequested()
+{
+  ViewerPanel* panel = static_cast<ViewerPanel*>(sender());
+
+  viewer_panels_.remove(viewer_panels_.key(panel));
+
+  panel->deleteLater();
+}
+
+void MainWindow::ViewerWithPanelRemovedFromGraph()
+{
+  ViewerOutput* vo = static_cast<ViewerOutput*>(sender());
+  viewer_panels_.take(vo)->deleteLater();
+  disconnect(vo, &ViewerOutput::RemovedFromGraph, this, &MainWindow::ViewerWithPanelRemovedFromGraph);
+}
+
 void MainWindow::FloatingPanelCloseRequested()
 {
   PanelWidget* panel = static_cast<PanelWidget*>(sender());
diff --git a/app/window/mainwindow/mainwindow.h b/app/window/mainwindow/mainwindow.h
index 35db59aee..fbbb38a70 100644
--- a/app/window/mainwindow/mainwindow.h
+++ b/app/window/mainwindow/mainwindow.h
@@ -71,6 +71,8 @@ public:
 
   ScopePanel* AppendScopePanel();
 
+  void OpenNodeInViewer(ViewerOutput* node);
+
   enum ProgressStatus {
     kProgressNone,
     kProgressShow,
@@ -155,6 +157,7 @@ private:
   PixelSamplerPanel* pixel_sampler_panel_;
   QList<ScopePanel*> scope_panels_;
   NodeTablePanel* table_panel_;
+  QMap<ViewerOutput*, ViewerPanel*> viewer_panels_;
 
 #ifdef Q_OS_WINDOWS
   unsigned int taskbar_btn_id_;
@@ -173,6 +176,10 @@ private slots:
 
   void ProjectCloseRequested();
 
+  void ViewerCloseRequested();
+
+  void ViewerWithPanelRemovedFromGraph();
+
   void FloatingPanelCloseRequested();
 
   void StatusBarDoubleClicked();