diff --git a/app/dialog/CMakeLists.txt b/app/dialog/CMakeLists.txt
index b1a19fe5a..ff82a6b2c 100644
--- a/app/dialog/CMakeLists.txt
+++ b/app/dialog/CMakeLists.txt
@@ -28,6 +28,7 @@ add_subdirectory(preferences)
 add_subdirectory(progress)
 add_subdirectory(rendercancel)
 add_subdirectory(sequence)
+add_subdirectory(speedduration)
 add_subdirectory(task)
 add_subdirectory(text)
 
diff --git a/app/dialog/speedduration/CMakeLists.txt b/app/dialog/speedduration/CMakeLists.txt
new file mode 100644
index 000000000..42471bd32
--- /dev/null
+++ b/app/dialog/speedduration/CMakeLists.txt
@@ -0,0 +1,22 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2021 Olive Team
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set(OLIVE_SOURCES
+  ${OLIVE_SOURCES}
+  dialog/speedduration/speeddurationdialog.cpp
+  dialog/speedduration/speeddurationdialog.h
+  PARENT_SCOPE
+)
diff --git a/app/dialog/speedduration/speeddurationdialog.cpp b/app/dialog/speedduration/speeddurationdialog.cpp
new file mode 100644
index 000000000..be2bc38b6
--- /dev/null
+++ b/app/dialog/speedduration/speeddurationdialog.cpp
@@ -0,0 +1,61 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "speeddurationdialog.h"
+
+#include <QDialogButtonBox>
+#include <QGridLayout>
+
+namespace olive {
+
+SpeedDurationDialog::SpeedDurationDialog(const QVector<ClipBlock *> &clips, QWidget *parent) :
+  QDialog(parent)
+{
+  QGridLayout *layout = new QGridLayout(this);
+
+  int row = 0;
+
+  layout->addWidget(new QLabel(tr("Speed:")), row, 0);
+
+  FloatSlider *speed_slider_ = new FloatSlider();
+  layout->addWidget(speed_slider_, row, 1);
+
+  row++;
+
+  layout->addWidget(new QLabel(tr("Duration:")), row, 0);
+
+  dur_slider_ = new RationalSlider();
+  layout->addWidget(dur_slider_, row, 1);
+
+  row++;
+
+  ripple_box_ = new QCheckBox();
+  layout->addWidget(ripple_box_, row, 0, 1, 2);
+
+  row++;
+
+  QDialogButtonBox *btns = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+  btns->setCenterButtons(true);
+  connect(btns, &QDialogButtonBox::accepted, this, &SpeedDurationDialog::accept);
+  connect(btns, &QDialogButtonBox::rejected, this, &SpeedDurationDialog::reject);
+  layout->addWidget(btns, row, 0, 1, 2);
+}
+
+}
diff --git a/app/dialog/speedduration/speeddurationdialog.h b/app/dialog/speedduration/speeddurationdialog.h
new file mode 100644
index 000000000..aadfee411
--- /dev/null
+++ b/app/dialog/speedduration/speeddurationdialog.h
@@ -0,0 +1,52 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef SPEEDDURATIONDIALOG_H
+#define SPEEDDURATIONDIALOG_H
+
+#include <QCheckBox>
+#include <QDialog>
+
+#include "node/block/clip/clip.h"
+#include "widget/slider/floatslider.h"
+#include "widget/slider/rationalslider.h"
+
+namespace olive {
+
+class SpeedDurationDialog : public QDialog
+{
+  Q_OBJECT
+public:
+  explicit SpeedDurationDialog(const QVector<ClipBlock*> &clips, QWidget *parent = nullptr);
+
+signals:
+
+private:
+  FloatSlider *speed_slider_;
+
+  RationalSlider *dur_slider_;
+
+  QCheckBox *ripple_box_;
+
+};
+
+}
+
+#endif // SPEEDDURATIONDIALOG_H
diff --git a/app/widget/menu/menushared.cpp b/app/widget/menu/menushared.cpp
index f2a7f2494..79623abbe 100644
--- a/app/widget/menu/menushared.cpp
+++ b/app/widget/menu/menushared.cpp
@@ -22,8 +22,10 @@
 
 #include "core.h"
 #include "common/timecodefunctions.h"
+#include "dialog/speedduration/speeddurationdialog.h"
 #include "panel/panelmanager.h"
 #include "panel/timeline/timeline.h"
+#include "window/mainwindow/mainwindow.h"
 
 namespace olive {
 
@@ -45,6 +47,7 @@ MenuShared::MenuShared()
   edit_delete_item_ = Menu::CreateItem(this, "delete", this, &MenuShared::DeleteSelectedTriggered, "Del");
   edit_ripple_delete_item_ = Menu::CreateItem(this, "rippledelete", this, &MenuShared::RippleDeleteTriggered, "Shift+Del");
   edit_split_item_ = Menu::CreateItem(this, "split", this, &MenuShared::SplitAtPlayheadTriggered, "Ctrl+K");
+  edit_speedduration_item_ = Menu::CreateItem(this, "speeddur", this, &MenuShared::SpeedDurationTriggered);
 
   // "In/Out" menu shared items
   inout_set_in_item_ = Menu::CreateItem(this, "setinpoint", this, &MenuShared::SetInTriggered, "I");
@@ -134,6 +137,7 @@ void MenuShared::AddItemsForEditMenu(Menu *m, bool for_clips)
   if (for_clips) {
     m->addAction(edit_ripple_delete_item_);
     m->addAction(edit_split_item_);
+    m->addAction(edit_speedduration_item_);
   }
 }
 
@@ -301,6 +305,26 @@ void MenuShared::ColorLabelTriggered(int color_index)
   PanelManager::instance()->CurrentlyFocused()->SetColorLabel(color_index);
 }
 
+void MenuShared::SpeedDurationTriggered()
+{
+  TimelinePanel* timeline = PanelManager::instance()->MostRecentlyFocused<TimelinePanel>();
+
+  if (timeline) {
+    QVector<Block*> sel = timeline->GetSelectedBlocks();
+    QVector<ClipBlock*> clips;
+
+    foreach (Block *b, sel) {
+      ClipBlock *c = dynamic_cast<ClipBlock*>(b);
+      if (c) {
+        clips.append(c);
+      }
+    }
+
+    SpeedDurationDialog sdd(clips, Core::instance()->main_window());
+    sdd.exec();
+  }
+}
+
 void MenuShared::Retranslate()
 {
   // "New" menu shared items
@@ -317,6 +341,7 @@ void MenuShared::Retranslate()
   edit_delete_item_->setText(tr("Delete"));
   edit_ripple_delete_item_->setText(tr("Ripple Delete"));
   edit_split_item_->setText(tr("Split"));
+  edit_speedduration_item_->setText(tr("Speed/Duration"));
 
   // "In/Out" menu shared items
   inout_set_in_item_->setText(tr("Set In Point"));
diff --git a/app/widget/menu/menushared.h b/app/widget/menu/menushared.h
index 34d2cecb4..cdc3dcdec 100644
--- a/app/widget/menu/menushared.h
+++ b/app/widget/menu/menushared.h
@@ -75,6 +75,7 @@ private:
   QAction* edit_delete_item_;
   QAction* edit_ripple_delete_item_;
   QAction* edit_split_item_;
+  QAction* edit_speedduration_item_;
 
   // "In/Out" menu shared items
   QAction* inout_set_in_item_;
@@ -145,6 +146,8 @@ private slots:
 
   void ColorLabelTriggered(int color_index);
 
+  void SpeedDurationTriggered();
+
 };
 
 }