diff --git a/app/common/rational.h b/app/common/rational.h
index 6179b029e..074f1b864 100644
--- a/app/common/rational.h
+++ b/app/common/rational.h
@@ -94,6 +94,12 @@ public:
   AVRational toAVRational() const;
 
 #ifdef USE_OTIO
+  static rational fromRationalTime(const opentime::RationalTime &t)
+  {
+    // Is this the best way to do this?
+    return fromDouble(t.to_seconds());
+  }
+
   // Convert Olive ratioanls to opentime rationals with the given framerate (defaults to 24)
   opentime::RationalTime toRationalTime(double framerate = 24) const;
 #endif
diff --git a/app/node/block/block.cpp b/app/node/block/block.cpp
index c0584f8d0..0cc53e91f 100644
--- a/app/node/block/block.cpp
+++ b/app/node/block/block.cpp
@@ -24,7 +24,6 @@
 
 #include "node/output/track/track.h"
 #include "transition/transition.h"
-#include "widget/slider/floatslider.h"
 #include "widget/slider/rationalslider.h"
 
 namespace olive {
@@ -32,18 +31,13 @@ namespace olive {
 #define super Node
 
 const QString Block::kLengthInput = QStringLiteral("length_in");
-const QString Block::kMediaInInput = QStringLiteral("media_in_in");
 const QString Block::kEnabledInput = QStringLiteral("enabled_in");
-const QString Block::kSpeedInput = QStringLiteral("speed_in");
-const QString Block::kReverseInput = QStringLiteral("reverse_in");
 
 Block::Block() :
   previous_(nullptr),
   next_(nullptr),
   track_(nullptr),
-  index_(-1),
-  in_transition_(nullptr),
-  out_transition_(nullptr)
+  index_(-1)
 {
   AddInput(kLengthInput, NodeValue::kRational, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
   SetInputProperty(kLengthInput, QStringLiteral("min"), QVariant::fromValue(rational(0, 1)));
@@ -51,21 +45,8 @@ Block::Block() :
   SetInputProperty(kLengthInput, QStringLiteral("viewlock"), true);
   IgnoreHashingFrom(kLengthInput);
 
-  AddInput(kMediaInInput, NodeValue::kRational, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
-  SetInputProperty(kMediaInInput, QStringLiteral("view"), RationalSlider::kTime);
-  SetInputProperty(kMediaInInput, QStringLiteral("viewlock"), true);
-  IgnoreHashingFrom(kMediaInInput);
-
   AddInput(kEnabledInput, NodeValue::kBoolean, true, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
 
-  AddInput(kSpeedInput, NodeValue::kFloat, 1.0, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
-  SetInputProperty(kSpeedInput, QStringLiteral("view"), FloatSlider::kPercentage);
-  SetInputProperty(kSpeedInput, QStringLiteral("min"), 0.0);
-  IgnoreHashingFrom(kSpeedInput);
-
-  AddInput(kReverseInput, NodeValue::kBoolean, false, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
-  IgnoreHashingFrom(kReverseInput);
-
   // A block's length must be greater than 0
   set_length_and_media_out(1);
 }
@@ -82,47 +63,23 @@ rational Block::length() const
 
 void Block::set_length_and_media_out(const rational &length)
 {
-  Q_ASSERT(length > 0);
-
   if (length == this->length()) {
     return;
   }
 
-  if (reverse()) {
-    // Calculate media_in adjustment
-    set_media_in(SequenceToMediaTime(length - this->length(), true));
-  }
-
   set_length_internal(length);
 }
 
 void Block::set_length_and_media_in(const rational &length)
 {
-  Q_ASSERT(length > 0);
-
   if (length == this->length()) {
     return;
   }
 
-  if (!reverse()) {
-    // Calculate media_in adjustment
-    set_media_in(SequenceToMediaTime(this->length() - length));
-  }
-
   // Set the length without setting media out
   set_length_internal(length);
 }
 
-rational Block::media_in() const
-{
-  return GetStandardValue(kMediaInInput).value<rational>();
-}
-
-void Block::set_media_in(const rational &media_in)
-{
-  SetStandardValue(kMediaInInput, QVariant::fromValue(media_in));
-}
-
 bool Block::is_enabled() const
 {
   return GetStandardValue(kEnabledInput).toBool();
@@ -135,65 +92,9 @@ void Block::set_enabled(bool e)
   emit EnabledChanged();
 }
 
-rational Block::SequenceToMediaTime(const rational &sequence_time, bool ignore_reverse) const
-{
-  // These constants are not considered "values" per se, so we don't modify them
-  if (sequence_time == RATIONAL_MIN || sequence_time == RATIONAL_MAX) {
-    return sequence_time;
-  }
-
-  rational local_time = sequence_time;
-
-  double speed_value = speed();
-
-  if (qIsNull(speed_value)) {
-    // Effectively holds the frame at the in point
-    local_time = 0;
-  } else if (!qFuzzyCompare(speed_value, 1.0)) {
-    // Multiply time
-    local_time = rational::fromDouble(local_time.toDouble() * speed_value);
-  }
-
-  rational media_time = local_time + media_in();
-
-  if (reverse() && !ignore_reverse) {
-    media_time = length() - media_time;
-  }
-
-  return media_time;
-}
-
-rational Block::MediaToSequenceTime(const rational &media_time) const
-{
-  // These constants are not considered "values" per se, so we don't modify them
-  if (media_time == RATIONAL_MIN || media_time == RATIONAL_MAX) {
-    return media_time;
-  }
-
-  rational sequence_time = media_time;
-
-  if (reverse()) {
-    sequence_time = length() - sequence_time;
-  }
-
-  sequence_time -= media_in();
-
-  double speed_value = speed();
-
-  if (qIsNull(speed_value)) {
-    // Effectively holds the frame at the in point, also prevents divide by zero
-    sequence_time = 0;
-  } else if (!qFuzzyCompare(speed_value, 1.0)) {
-    // Multiply time
-    sequence_time = rational::fromDouble(sequence_time.toDouble() / speed_value);
-  }
-
-  return sequence_time;
-}
-
 void Block::InputValueChangedEvent(const QString &input, int element)
 {
-  Q_UNUSED(element)
+  super::InputValueChangedEvent(input, element);
 
   if (input == kLengthInput) {
     emit LengthChanged();
@@ -202,19 +103,6 @@ void Block::InputValueChangedEvent(const QString &input, int element)
   }
 }
 
-void Block::LinkChangeEvent()
-{
-  block_links_.clear();
-
-  foreach (Node* n, links()) {
-    Block* b = dynamic_cast<Block*>(n);
-
-    if (b) {
-      block_links_.append(b);
-    }
-  }
-}
-
 bool Block::HashPassthrough(const QString &input, const QString &output, QCryptographicHash &hash, const rational &time, const VideoParams &video_params) const
 {
   if (IsInputConnected(input)) {
@@ -239,10 +127,7 @@ void Block::Retranslate()
   super::Retranslate();
 
   SetInputName(kLengthInput, tr("Length"));
-  SetInputName(kMediaInInput, tr("Media In"));
   SetInputName(kEnabledInput, tr("Enabled"));
-  SetInputName(kSpeedInput, tr("Speed"));
-  SetInputName(kReverseInput, tr("Reverse"));
 }
 
 void Block::Hash(const QString &, QCryptographicHash &, const rational &, const VideoParams &) const
diff --git a/app/node/block/block.h b/app/node/block/block.h
index c3d7f5a90..e438829d2 100644
--- a/app/node/block/block.h
+++ b/app/node/block/block.h
@@ -62,8 +62,8 @@ public:
   }
 
   rational length() const;
-  void set_length_and_media_out(const rational &length);
-  void set_length_and_media_in(const rational &length);
+  virtual void set_length_and_media_out(const rational &length);
+  virtual void set_length_and_media_in(const rational &length);
 
   TimeRange range() const
   {
@@ -90,9 +90,6 @@ public:
     next_ = next;
   }
 
-  rational media_in() const;
-  void set_media_in(const rational& media_in);
-
   Track* track() const
   {
     return track_;
@@ -108,26 +105,6 @@ public:
 
   virtual void Retranslate() override;
 
-  TransitionBlock* in_transition()
-  {
-    return in_transition_;
-  }
-
-  void set_in_transition(TransitionBlock* t)
-  {
-    in_transition_ = t;
-  }
-
-  TransitionBlock* out_transition()
-  {
-    return out_transition_;
-  }
-
-  void set_out_transition(TransitionBlock* t)
-  {
-    out_transition_ = t;
-  }
-
   int index() const
   {
     return index_;
@@ -138,30 +115,12 @@ public:
     index_ = i;
   }
 
-  const QVector<Block*>& block_links() const
-  {
-    return block_links_;
-  }
-
-  double speed() const
-  {
-    return GetStandardValue(kSpeedInput).toDouble();
-  }
-
-  bool reverse() const
-  {
-    return GetStandardValue(kReverseInput).toBool();
-  }
-
   virtual void Hash(const QString& output, QCryptographicHash &hash, const rational &time, const VideoParams& video_params) const override;
 
   virtual void InvalidateCache(const TimeRange& range, const QString& from, int element = -1, InvalidateCacheOptions options = InvalidateCacheOptions()) override;
 
   static const QString kLengthInput;
-  static const QString kMediaInInput;
   static const QString kEnabledInput;
-  static const QString kSpeedInput;
-  static const QString kReverseInput;
 
 public slots:
 
@@ -171,14 +130,8 @@ signals:
   void LengthChanged();
 
 protected:
-  rational SequenceToMediaTime(const rational& sequence_time, bool ignore_reverse = false) const;
-
-  rational MediaToSequenceTime(const rational& media_time) const;
-
   virtual void InputValueChangedEvent(const QString& input, int element) override;
 
-  virtual void LinkChangeEvent() override;
-
   bool HashPassthrough(const QString &input, const QString& output, QCryptographicHash &hash, const rational &time, const VideoParams& video_params) const;
 
   Block* previous_;
@@ -192,11 +145,6 @@ private:
   Track* track_;
   int index_;
 
-  TransitionBlock* in_transition_;
-  TransitionBlock* out_transition_;
-
-  QVector<Block*> block_links_;
-
   rational last_length_;
 
 };
diff --git a/app/node/block/clip/clip.cpp b/app/node/block/clip/clip.cpp
index 83b8ad520..e8230d3c7 100644
--- a/app/node/block/clip/clip.cpp
+++ b/app/node/block/clip/clip.cpp
@@ -20,17 +20,36 @@
 
 #include "clip.h"
 
+#include "widget/slider/floatslider.h"
+#include "widget/slider/rationalslider.h"
+
 namespace olive {
 
 #define super Block
 
 const QString ClipBlock::kBufferIn = QStringLiteral("buffer_in");
+const QString ClipBlock::kMediaInInput = QStringLiteral("media_in_in");
+const QString ClipBlock::kSpeedInput = QStringLiteral("speed_in");
+const QString ClipBlock::kReverseInput = QStringLiteral("reverse_in");
 
-ClipBlock::ClipBlock(bool create_buffer_in)
+ClipBlock::ClipBlock() :
+  in_transition_(nullptr),
+  out_transition_(nullptr)
 {
-  if (create_buffer_in) {
-    AddInput(kBufferIn, NodeValue::kNone, InputFlags(kInputFlagNotKeyframable));
-  }
+  AddInput(kMediaInInput, NodeValue::kRational, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
+  SetInputProperty(kMediaInInput, QStringLiteral("view"), RationalSlider::kTime);
+  SetInputProperty(kMediaInInput, QStringLiteral("viewlock"), true);
+  IgnoreHashingFrom(kMediaInInput);
+
+  AddInput(kSpeedInput, NodeValue::kFloat, 1.0, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
+  SetInputProperty(kSpeedInput, QStringLiteral("view"), FloatSlider::kPercentage);
+  SetInputProperty(kSpeedInput, QStringLiteral("min"), 0.0);
+  IgnoreHashingFrom(kSpeedInput);
+
+  AddInput(kReverseInput, NodeValue::kBoolean, false, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
+  IgnoreHashingFrom(kReverseInput);
+
+  AddInput(kBufferIn, NodeValue::kNone, InputFlags(kInputFlagNotKeyframable));
 }
 
 Node *ClipBlock::copy() const
@@ -53,6 +72,100 @@ QString ClipBlock::Description() const
   return tr("A time-based node that represents a media source.");
 }
 
+void ClipBlock::set_length_and_media_out(const rational &length)
+{
+  if (length == this->length()) {
+    return;
+  }
+
+  if (reverse()) {
+    // Calculate media_in adjustment
+    set_media_in(SequenceToMediaTime(length - this->length(), true));
+  }
+
+  super::set_length_and_media_out(length);
+}
+
+void ClipBlock::set_length_and_media_in(const rational &length)
+{
+  if (length == this->length()) {
+    return;
+  }
+
+  if (!reverse()) {
+    // Calculate media_in adjustment
+    set_media_in(SequenceToMediaTime(this->length() - length));
+  }
+
+  super::set_length_and_media_in(length);
+}
+
+rational ClipBlock::media_in() const
+{
+  return GetStandardValue(kMediaInInput).value<rational>();
+}
+
+void ClipBlock::set_media_in(const rational &media_in)
+{
+  SetStandardValue(kMediaInInput, QVariant::fromValue(media_in));
+}
+
+rational ClipBlock::SequenceToMediaTime(const rational &sequence_time, bool ignore_reverse) const
+{
+  // These constants are not considered "values" per se, so we don't modify them
+  if (sequence_time == RATIONAL_MIN || sequence_time == RATIONAL_MAX) {
+    return sequence_time;
+  }
+
+  rational local_time = sequence_time;
+
+  double speed_value = speed();
+
+  if (qIsNull(speed_value)) {
+    // Effectively holds the frame at the in point
+    local_time = 0;
+  } else if (!qFuzzyCompare(speed_value, 1.0)) {
+    // Multiply time
+    local_time = rational::fromDouble(local_time.toDouble() * speed_value);
+  }
+
+  rational media_time = local_time + media_in();
+
+  if (reverse() && !ignore_reverse) {
+    media_time = length() - media_time;
+  }
+
+  return media_time;
+}
+
+rational ClipBlock::MediaToSequenceTime(const rational &media_time) const
+{
+  // These constants are not considered "values" per se, so we don't modify them
+  if (media_time == RATIONAL_MIN || media_time == RATIONAL_MAX) {
+    return media_time;
+  }
+
+  rational sequence_time = media_time;
+
+  if (reverse()) {
+    sequence_time = length() - sequence_time;
+  }
+
+  sequence_time -= media_in();
+
+  double speed_value = speed();
+
+  if (qIsNull(speed_value)) {
+    // Effectively holds the frame at the in point, also prevents divide by zero
+    sequence_time = 0;
+  } else if (!qFuzzyCompare(speed_value, 1.0)) {
+    // Multiply time
+    sequence_time = rational::fromDouble(sequence_time.toDouble() / speed_value);
+  }
+
+  return sequence_time;
+}
+
 void ClipBlock::InvalidateCache(const TimeRange& range, const QString& from, int element, InvalidateCacheOptions options)
 {
   Q_UNUSED(element)
@@ -70,6 +183,19 @@ void ClipBlock::InvalidateCache(const TimeRange& range, const QString& from, int
   }
 }
 
+void ClipBlock::LinkChangeEvent()
+{
+  block_links_.clear();
+
+  foreach (Node* n, links()) {
+    ClipBlock* b = dynamic_cast<ClipBlock*>(n);
+
+    if (b) {
+      block_links_.append(b);
+    }
+  }
+}
+
 TimeRange ClipBlock::InputTimeAdjustment(const QString& input, int element, const TimeRange& input_time) const
 {
   Q_UNUSED(element)
@@ -110,9 +236,10 @@ void ClipBlock::Retranslate()
 {
   super::Retranslate();
 
-  if (HasInputWithID(kBufferIn)) {
-    SetInputName(kBufferIn, tr("Buffer"));
-  }
+  SetInputName(kBufferIn, tr("Buffer"));
+  SetInputName(kMediaInInput, tr("Media In"));
+  SetInputName(kSpeedInput, tr("Speed"));
+  SetInputName(kReverseInput, tr("Reverse"));
 }
 
 void ClipBlock::Hash(const QString &out, QCryptographicHash &hash, const rational &time, const VideoParams &video_params) const
diff --git a/app/node/block/clip/clip.h b/app/node/block/clip/clip.h
index c81d3b510..8c4448bd9 100644
--- a/app/node/block/clip/clip.h
+++ b/app/node/block/clip/clip.h
@@ -32,7 +32,7 @@ class ClipBlock : public Block
 {
   Q_OBJECT
 public:
-  ClipBlock(bool create_buffer_in = true);
+  ClipBlock();
 
   NODE_DEFAULT_DESTRUCTOR(ClipBlock)
 
@@ -42,6 +42,12 @@ public:
   virtual QString id() const override;
   virtual QString Description() const override;
 
+  virtual void set_length_and_media_out(const rational &length) override;
+  virtual void set_length_and_media_in(const rational &length) override;
+
+  rational media_in() const;
+  void set_media_in(const rational& media_in);
+
   virtual void InvalidateCache(const TimeRange& range, const QString& from, int element, InvalidateCacheOptions options) override;
 
   virtual TimeRange InputTimeAdjustment(const QString& input, int element, const TimeRange& input_time) const override;
@@ -54,7 +60,58 @@ public:
 
   virtual void Hash(const QString& output, QCryptographicHash &hash, const rational &time, const VideoParams& video_params) const override;
 
+  double speed() const
+  {
+    return GetStandardValue(kSpeedInput).toDouble();
+  }
+
+  bool reverse() const
+  {
+    return GetStandardValue(kReverseInput).toBool();
+  }
+
+  TransitionBlock* in_transition()
+  {
+    return in_transition_;
+  }
+
+  void set_in_transition(TransitionBlock* t)
+  {
+    in_transition_ = t;
+  }
+
+  TransitionBlock* out_transition()
+  {
+    return out_transition_;
+  }
+
+  void set_out_transition(TransitionBlock* t)
+  {
+    out_transition_ = t;
+  }
+
+  const QVector<Block*>& block_links() const
+  {
+    return block_links_;
+  }
+
   static const QString kBufferIn;
+  static const QString kMediaInInput;
+  static const QString kSpeedInput;
+  static const QString kReverseInput;
+
+protected:
+  virtual void LinkChangeEvent() override;
+
+private:
+  rational SequenceToMediaTime(const rational& sequence_time, bool ignore_reverse = false) const;
+
+  rational MediaToSequenceTime(const rational& media_time) const;
+
+  QVector<Block*> block_links_;
+
+  TransitionBlock* in_transition_;
+  TransitionBlock* out_transition_;
 
 };
 
diff --git a/app/node/block/subtitle/subtitle.cpp b/app/node/block/subtitle/subtitle.cpp
index 3f5a9a212..ef42559cd 100644
--- a/app/node/block/subtitle/subtitle.cpp
+++ b/app/node/block/subtitle/subtitle.cpp
@@ -26,8 +26,7 @@ namespace olive {
 
 const QString SubtitleBlock::kTextIn = QStringLiteral("text_in");
 
-SubtitleBlock::SubtitleBlock() :
-  super(false)
+SubtitleBlock::SubtitleBlock()
 {
   AddInput(kTextIn, NodeValue::kText, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
 }
diff --git a/app/node/block/transition/transition.cpp b/app/node/block/transition/transition.cpp
index 2603f0acd..6e8932098 100644
--- a/app/node/block/transition/transition.cpp
+++ b/app/node/block/transition/transition.cpp
@@ -21,6 +21,7 @@
 #include "transition.h"
 
 #include "common/clamp.h"
+#include "node/block/clip/clip.h"
 #include "node/output/track/track.h"
 
 namespace olive {
@@ -30,6 +31,8 @@ namespace olive {
 const QString TransitionBlock::kOutBlockInput = QStringLiteral("out_block_in");
 const QString TransitionBlock::kInBlockInput = QStringLiteral("in_block_in");
 const QString TransitionBlock::kCurveInput = QStringLiteral("curve_in");
+const QString TransitionBlock::kInOffsetInput = QStringLiteral("in_offset_in");
+const QString TransitionBlock::kOutOffsetInput = QStringLiteral("out_offset_in");
 
 TransitionBlock::TransitionBlock() :
   connected_out_block_(nullptr),
@@ -40,6 +43,12 @@ TransitionBlock::TransitionBlock() :
   AddInput(kInBlockInput, NodeValue::kNone, InputFlags(kInputFlagNotKeyframable));
 
   AddInput(kCurveInput, NodeValue::kCombo, InputFlags(kInputFlagNotKeyframable | kInputFlagNotConnectable));
+
+  AddInput(kInOffsetInput, NodeValue::kRational, InputFlags(kInputFlagNotKeyframable | kInputFlagNotConnectable));
+
+  AddInput(kOutOffsetInput, NodeValue::kRational, InputFlags(kInputFlagNotKeyframable | kInputFlagNotConnectable));
+
+  set_length_and_media_out(0);
 }
 
 void TransitionBlock::Retranslate()
@@ -49,6 +58,8 @@ void TransitionBlock::Retranslate()
   SetInputName(kOutBlockInput, tr("From"));
   SetInputName(kInBlockInput, tr("To"));
   SetInputName(kCurveInput, tr("Curve"));
+  SetInputName(kInOffsetInput, tr("In Offset"));
+  SetInputName(kOutOffsetInput, tr("Out Offset"));
 
   // These must correspond to the CurveType enum
   SetComboBoxStrings(kCurveInput, { tr("Linear"), tr("Exponential"), tr("Logarithmic") });
@@ -56,34 +67,22 @@ void TransitionBlock::Retranslate()
 
 rational TransitionBlock::in_offset() const
 {
-  // If no in block is connected, there's no in offset
-  if (!connected_in_block()) {
-    return 0;
-  }
+  return GetStandardValue(kInOffsetInput).value<rational>();
+}
 
-  if (!connected_out_block()) {
-    // Assume only an in block is connected, in which case this entire transition length
-    return length();
-  }
-
-  // Assume both are connected
-  return length() + media_in();
+void TransitionBlock::set_in_offset(const rational &os)
+{
+  SetStandardValue(kInOffsetInput, QVariant::fromValue(os));
 }
 
 rational TransitionBlock::out_offset() const
 {
-  // If no in block is connected, there's no in offset
-  if (!connected_out_block()) {
-    return 0;
-  }
+  return GetStandardValue(kOutOffsetInput).value<rational>();
+}
 
-  if (!connected_in_block()) {
-    // Assume only an in block is connected, in which case this entire transition length
-    return length();
-  }
-
-  // Assume both are connected
-  return -media_in();
+void TransitionBlock::set_out_offset(const rational &os)
+{
+  SetStandardValue(kOutOffsetInput, QVariant::fromValue(os));
 }
 
 Block *TransitionBlock::connected_out_block() const
@@ -267,12 +266,12 @@ void TransitionBlock::InputConnectedEvent(const QString &input, int element, con
 
   if (input == kOutBlockInput) {
     // If node is not a block, this will just be null
-    if ((connected_out_block_ = dynamic_cast<Block*>(output.node()))) {
+    if ((connected_out_block_ = dynamic_cast<ClipBlock*>(output.node()))) {
       connected_out_block_->set_out_transition(this);
     }
   } else if (input == kInBlockInput) {
     // If node is not a block, this will just be null
-    if ((connected_in_block_ = dynamic_cast<Block*>(output.node()))) {
+    if ((connected_in_block_ = dynamic_cast<ClipBlock*>(output.node()))) {
       connected_in_block_->set_in_transition(this);
     }
   }
diff --git a/app/node/block/transition/transition.h b/app/node/block/transition/transition.h
index 29b02a6d3..4156ee4d9 100644
--- a/app/node/block/transition/transition.h
+++ b/app/node/block/transition/transition.h
@@ -25,6 +25,8 @@
 
 namespace olive {
 
+class ClipBlock;
+
 class TransitionBlock : public Block
 {
   Q_OBJECT
@@ -36,7 +38,9 @@ public:
   virtual void Retranslate() override;
 
   rational in_offset() const;
+  void set_in_offset(const rational &os);
   rational out_offset() const;
+  void set_out_offset(const rational &os);
 
   Block* connected_out_block() const;
   Block* connected_in_block() const;
@@ -54,6 +58,8 @@ public:
   static const QString kOutBlockInput;
   static const QString kInBlockInput;
   static const QString kCurveInput;
+  static const QString kInOffsetInput;
+  static const QString kOutOffsetInput;
 
 protected:
   virtual void ShaderJobEvent(NodeValueDatabase &value, ShaderJob& job) const;
@@ -81,9 +87,9 @@ private:
 
   void InsertTransitionTimes(AcceleratedJob* job, const double& time) const;
 
-  Block* connected_out_block_;
+  ClipBlock* connected_out_block_;
 
-  Block* connected_in_block_;
+  ClipBlock* connected_in_block_;
 
 };
 
diff --git a/app/render/renderprocessor.cpp b/app/render/renderprocessor.cpp
index 34a1b8760..4f65968fb 100644
--- a/app/render/renderprocessor.cpp
+++ b/app/render/renderprocessor.cpp
@@ -25,6 +25,8 @@
 #include <QVector3D>
 #include <QVector4D>
 
+#include "node/block/clip/clip.h"
+#include "node/block/transition/transition.h"
 #include "node/project/project.h"
 #include "rendermanager.h"
 
@@ -253,43 +255,50 @@ NodeValueTable RenderProcessor::GenerateBlockTable(const Track *track, const Tim
 
     // Loop through active blocks retrieving their audio
     foreach (Block* b, active_blocks) {
-      TimeRange range_for_block(qMax(b->in(), range.in()),
-                                qMin(b->out(), range.out()));
+      if (dynamic_cast<ClipBlock*>(b) || dynamic_cast<TransitionBlock*>(b)) {
+        TimeRange range_for_block(qMax(b->in(), range.in()),
+                                  qMin(b->out(), range.out()));
 
-      int destination_offset = audio_params.time_to_samples(range_for_block.in() - range.in());
-      int max_dest_sz = audio_params.time_to_samples(range_for_block.length());
+        int destination_offset = audio_params.time_to_samples(range_for_block.in() - range.in());
+        int max_dest_sz = audio_params.time_to_samples(range_for_block.length());
 
-      // Destination buffer
-      NodeValueTable table = GenerateTable(b, Track::TransformRangeForBlock(b, range_for_block));
-      SampleBufferPtr samples_from_this_block = table.Take(NodeValue::kSamples).value<SampleBufferPtr>();
+        // Destination buffer
+        NodeValueTable table = GenerateTable(b, Track::TransformRangeForBlock(b, range_for_block));
+        SampleBufferPtr samples_from_this_block = table.Take(NodeValue::kSamples).value<SampleBufferPtr>();
 
-      if (!samples_from_this_block) {
-        // If we retrieved no samples from this block, do nothing
-        continue;
+        if (!samples_from_this_block) {
+          // If we retrieved no samples from this block, do nothing
+          continue;
+        }
+
+        // If this is a clip, we might have extra speed/reverse information
+        ClipBlock *clip_cast = dynamic_cast<ClipBlock*>(b);
+        if (clip_cast) {
+          double speed_value = clip_cast->speed();
+          bool reversed = clip_cast->reverse();
+
+          if (qIsNull(speed_value)) {
+            // Just silence, don't think there's any other practical application of 0 speed audio
+            samples_from_this_block->fill(0);
+          } else if (!qFuzzyCompare(speed_value, 1.0)) {
+            // Multiply time
+            samples_from_this_block->speed(speed_value);
+          }
+
+          if (reversed) {
+            samples_from_this_block->reverse();
+          }
+        }
+
+        int copy_length = qMin(max_dest_sz, samples_from_this_block->sample_count());
+
+        // Copy samples into destination buffer
+        for (int i=0; i<samples_from_this_block->audio_params().channel_count(); i++) {
+          block_range_buffer->set(i, samples_from_this_block->data(i), destination_offset, copy_length);
+        }
+
+        NodeValueTable::Merge({merged_table, table});
       }
-
-      double speed_value = b->GetStandardValue(Block::kSpeedInput).toDouble();
-
-      if (qIsNull(speed_value)) {
-        // Just silence, don't think there's any other practical application of 0 speed audio
-        samples_from_this_block->fill(0);
-      } else if (!qFuzzyCompare(speed_value, 1.0)) {
-        // Multiply time
-        samples_from_this_block->speed(speed_value);
-      }
-
-      if (b->GetStandardValue(Block::kReverseInput).toBool()) {
-        samples_from_this_block->reverse();
-      }
-
-      int copy_length = qMin(max_dest_sz, samples_from_this_block->sample_count());
-
-      // Copy samples into destination buffer
-      for (int i=0; i<samples_from_this_block->audio_params().channel_count(); i++) {
-        block_range_buffer->set(i, samples_from_this_block->data(i), destination_offset, copy_length);
-      }
-
-      NodeValueTable::Merge({merged_table, table});
     }
 
     if (ticket_->property("enablewaveforms").toBool()) {
diff --git a/app/task/project/loadotio/loadotio.cpp b/app/task/project/loadotio/loadotio.cpp
index 1d672ace4..11b10e716 100644
--- a/app/task/project/loadotio/loadotio.cpp
+++ b/app/task/project/loadotio/loadotio.cpp
@@ -168,7 +168,9 @@ bool LoadOTIOTask::Run()
           duration =
               rational::fromDouble(static_cast<OTIO::Item*>(otio_block)->source_range()->duration().to_seconds());
 
-          block->set_media_in(start_time);
+          if (otio_block->schema_name() == "Clip") {
+            static_cast<ClipBlock*>(block)->set_media_in(start_time);
+          }
           block->set_length_and_media_out(duration);
         }
 
@@ -183,14 +185,12 @@ bool LoadOTIOTask::Run()
           TransitionBlock* transition_block = static_cast<TransitionBlock*>(block);
           OTIO::Transition* otio_block_transition = static_cast<OTIO::Transition*>(otio_block);
 
-          duration = rational::fromDouble((otio_block_transition->in_offset() + otio_block_transition->out_offset()).to_seconds());
-          transition_block->set_length_and_media_out(duration);
+          // Set how far the transition eats into the previous clip
+          transition_block->set_in_offset(rational::fromRationalTime(otio_block_transition->in_offset()));
+          transition_block->set_out_offset(rational::fromRationalTime(otio_block_transition->out_offset()));
 
           if (previous_block) {
             Node::ConnectEdge(previous_block, NodeInput(transition_block, TransitionBlock::kOutBlockInput));
-
-            // Set how far the transition eats into the previous clip
-            transition_block->set_media_in(rational::fromDouble(-otio_block_transition->out_offset().to_seconds()));
           }
           prev_block_transition = true;
         }
diff --git a/app/widget/timelinewidget/timelinewidget.cpp b/app/widget/timelinewidget/timelinewidget.cpp
index 8dd77583f..eabc90be2 100644
--- a/app/widget/timelinewidget/timelinewidget.cpp
+++ b/app/widget/timelinewidget/timelinewidget.cpp
@@ -1190,7 +1190,7 @@ void TimelineWidget::SetViewTransitionOverlay(ClipBlock *out, ClipBlock *in)
   }
 }
 
-void TimelineWidget::SetBlockLinksSelected(Block* block, bool selected)
+void TimelineWidget::SetBlockLinksSelected(ClipBlock* block, bool selected)
 {
   foreach (Block* link, block->block_links()) {
     if (selected) {
@@ -1550,8 +1550,9 @@ void TimelineWidget::MoveRubberBandSelect(bool enable_selecting, bool select_lin
       rubberband_now_selected_.append(b);
     }
 
-    if (select_links) {
-      foreach (Block* link, b->block_links()) {
+    ClipBlock *c = dynamic_cast<ClipBlock*>(b);
+    if (c && select_links) {
+      foreach (Block* link, c->block_links()) {
         if (!rubberband_now_selected_.contains(link)) {
           AddSelection(link);
           rubberband_now_selected_.append(link);
diff --git a/app/widget/timelinewidget/timelinewidget.h b/app/widget/timelinewidget/timelinewidget.h
index 47bd24794..6098fb1b4 100644
--- a/app/widget/timelinewidget/timelinewidget.h
+++ b/app/widget/timelinewidget/timelinewidget.h
@@ -172,7 +172,7 @@ public:
     return selected_blocks_.contains(b);
   }
 
-  void SetBlockLinksSelected(Block *block, bool selected);
+  void SetBlockLinksSelected(ClipBlock *block, bool selected);
 
   void QueueScroll(int value);
 
diff --git a/app/widget/timelinewidget/tool/pointer.cpp b/app/widget/timelinewidget/tool/pointer.cpp
index 95b4b61db..67dc553bd 100644
--- a/app/widget/timelinewidget/tool/pointer.cpp
+++ b/app/widget/timelinewidget/tool/pointer.cpp
@@ -54,6 +54,7 @@ void PointerTool::MousePress(TimelineViewMouseEvent *event)
 
   // Determine if item clicked on is selectable
   clicked_item_ = parent()->GetItemAtScenePos(event->GetCoordinates());
+  ClipBlock *clip_clicked_item = dynamic_cast<ClipBlock*>(clicked_item_);
 
   can_rubberband_select_ = false;
 
@@ -92,9 +93,9 @@ void PointerTool::MousePress(TimelineViewMouseEvent *event)
         deselected_blocks.append(clicked_item_);
 
         // If not holding alt, deselect all links as well
-        if (!(event->GetModifiers() & Qt::AltModifier)) {
-          parent()->SetBlockLinksSelected(clicked_item_, false);
-          deselected_blocks.append(clicked_item_->block_links());
+        if (clip_clicked_item && !(event->GetModifiers() & Qt::AltModifier)) {
+          parent()->SetBlockLinksSelected(clip_clicked_item, false);
+          deselected_blocks.append(clip_clicked_item->block_links());
         }
       }
 
@@ -119,9 +120,9 @@ void PointerTool::MousePress(TimelineViewMouseEvent *event)
     selected_blocks.append(clicked_item_);
 
     // If not holding alt, select all links as well
-    if (!(event->GetModifiers() & Qt::AltModifier)) {
-      parent()->SetBlockLinksSelected(clicked_item_, true);
-      selected_blocks.append(clicked_item_->block_links());
+    if (clip_clicked_item && !(event->GetModifiers() & Qt::AltModifier)) {
+      parent()->SetBlockLinksSelected(clip_clicked_item, true);
+      selected_blocks.append(clip_clicked_item->block_links());
     }
 
     parent()->SignalSelectedBlocks(selected_blocks);
@@ -329,10 +330,6 @@ void PointerTool::InitiateDragInternal(Block *clicked_item,
 
         // Create ghost for this block
         AddGhostFromBlock(block, trim_mode, true);
-
-        // Create ghosts for this block's transitions if any
-        AddGhostFromBlock(block->in_transition(), trim_mode, true);
-        AddGhostFromBlock(block->out_transition(), trim_mode, true);
       }
     }
 
@@ -361,15 +358,16 @@ void PointerTool::InitiateDragInternal(Block *clicked_item,
       // transition than a trim/roll
       bool treat_trim_as_slide = false;
 
-      if (dynamic_cast<ClipBlock*>(block)) {
+      ClipBlock *cb = dynamic_cast<ClipBlock*>(block);
+      if (cb) {
         // See if this clip has a transition attached, and move it with the trim if so
         TransitionBlock* connected_transition;
 
         // Get appropriate transition for the side of the clip
         if (trim_mode == Timeline::kTrimIn) {
-          connected_transition = block->in_transition();
+          connected_transition = cb->in_transition();
         } else {
-          connected_transition = block->out_transition();
+          connected_transition = cb->out_transition();
         }
 
         if (connected_transition) {
diff --git a/app/widget/timelinewidget/tool/razor.cpp b/app/widget/timelinewidget/tool/razor.cpp
index ae461da2b..f8c350344 100644
--- a/app/widget/timelinewidget/tool/razor.cpp
+++ b/app/widget/timelinewidget/tool/razor.cpp
@@ -70,15 +70,16 @@ void RazorTool::MouseRelease(TimelineViewMouseEvent *event)
     Block* block_at_time = track->NearestBlockBefore(split_time);
 
     // Ensure there's a valid block here
+    ClipBlock *clip_at_time;
     if (block_at_time
         && block_at_time->out() != split_time
-        && dynamic_cast<ClipBlock*>(block_at_time)
+        && (clip_at_time = dynamic_cast<ClipBlock*>(block_at_time))
         && !blocks_to_split.contains(block_at_time)) {
       blocks_to_split.append(block_at_time);
 
       // Add links if no alt is held
       if (!(event->GetModifiers() & Qt::AltModifier)) {
-        foreach (Block* link, block_at_time->block_links()) {
+        foreach (Block* link, clip_at_time->block_links()) {
           if (!blocks_to_split.contains(link)) {
             blocks_to_split.append(link);
           }
diff --git a/app/widget/timelinewidget/tool/slip.cpp b/app/widget/timelinewidget/tool/slip.cpp
index e7f66881f..f3b1281b8 100644
--- a/app/widget/timelinewidget/tool/slip.cpp
+++ b/app/widget/timelinewidget/tool/slip.cpp
@@ -75,7 +75,10 @@ void SlipTool::FinishDrag(TimelineViewMouseEvent *event)
   foreach (TimelineViewGhostItem* ghost, parent()->GetGhostItems()) {
     Block* b = Node::ValueToPtr<Block>(ghost->GetData(TimelineViewGhostItem::kAttachedBlock));
 
-    command->add_child(new BlockSetMediaInCommand(b, ghost->GetAdjustedMediaIn()));
+    ClipBlock *cb = dynamic_cast<ClipBlock*>(b);
+    if (cb) {
+      command->add_child(new BlockSetMediaInCommand(cb, ghost->GetAdjustedMediaIn()));
+    }
   }
 
   Core::instance()->undo_stack()->pushIfHasChildren(command);
diff --git a/app/widget/timelinewidget/tool/transition.cpp b/app/widget/timelinewidget/tool/transition.cpp
index 20ae40afa..46c05a004 100644
--- a/app/widget/timelinewidget/tool/transition.cpp
+++ b/app/widget/timelinewidget/tool/transition.cpp
@@ -115,8 +115,9 @@ void TransitionTool::MouseRelease(TimelineViewMouseEvent *event)
                                                     ghost_->GetAdjustedIn()));
 
       if (dual_transition_) {
-        transition->set_length_and_media_out(ghost_->GetAdjustedLength());
-        transition->set_media_in(-ghost_->GetAdjustedLength()/2);
+        rational half_len = ghost_->GetAdjustedLength()/2;
+        transition->set_in_offset(half_len);
+        transition->set_out_offset(half_len);
 
         // Block mouse is hovering over
         Block* active_block = Node::ValueToPtr<Block>(ghost_->GetData(TimelineViewGhostItem::kAttachedBlock));
diff --git a/app/widget/timelinewidget/undo/timelineundogeneral.h b/app/widget/timelinewidget/undo/timelineundogeneral.h
index fe07ed764..423f4da84 100644
--- a/app/widget/timelinewidget/undo/timelineundogeneral.h
+++ b/app/widget/timelinewidget/undo/timelineundogeneral.h
@@ -22,6 +22,7 @@
 #define TIMELINEUNDOGENERAL_H
 
 #include "config/config.h"
+#include "node/block/clip/clip.h"
 #include "node/block/gap/gap.h"
 #include "node/output/track/track.h"
 #include "node/output/track/tracklist.h"
@@ -81,7 +82,7 @@ private:
 
 class BlockSetMediaInCommand : public UndoCommand {
 public:
-  BlockSetMediaInCommand(Block* block, rational new_media_in) :
+  BlockSetMediaInCommand(ClipBlock* block, rational new_media_in) :
     block_(block),
     new_media_in_(new_media_in)
   {
@@ -97,7 +98,7 @@ protected:
   virtual void undo();
 
 private:
-  Block* block_;
+  ClipBlock* block_;
   rational old_media_in_;
   rational new_media_in_;
 
diff --git a/app/widget/timelinewidget/view/timelineviewghostitem.h b/app/widget/timelinewidget/view/timelineviewghostitem.h
index 3237b6519..92da94e98 100644
--- a/app/widget/timelinewidget/view/timelineviewghostitem.h
+++ b/app/widget/timelinewidget/view/timelineviewghostitem.h
@@ -65,7 +65,9 @@ public:
 
     ghost->SetIn(block->in());
     ghost->SetOut(block->out());
-    ghost->SetMediaIn(block->media_in());
+    if (dynamic_cast<ClipBlock*>(block)) {
+      ghost->SetMediaIn(static_cast<ClipBlock*>(block)->media_in());
+    }
     ghost->SetTrack(block->track()->ToReference());
     ghost->SetData(kAttachedBlock, Node::PtrToValue(block));