4 files changed, 12 insertions, 9 deletions
diff --git a/src/reel_asset.cc b/src/reel_asset.cc
index f9742628..6b6bdc0b 100644
--- a/src/reel_asset.cc
+++ b/src/reel_asset.cc
@@ -49,22 +49,25 @@ LIBDCP_DISABLE_WARNINGS
 LIBDCP_ENABLE_WARNINGS
 
 
-using std::pair;
-using std::string;
 using std::make_pair;
+using std::pair;
 using std::shared_ptr;
+using std::string;
 using boost::optional;
 using namespace dcp;
 
 
-ReelAsset::ReelAsset (string id, Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point)
+ReelAsset::ReelAsset (string id, Fraction edit_rate, int64_t intrinsic_duration, optional<int64_t> entry_point)
 	: Object (id)
 	, _intrinsic_duration (intrinsic_duration)
-	, _duration (intrinsic_duration - entry_point)
 	, _edit_rate (edit_rate)
 	, _entry_point (entry_point)
 {
-	DCP_ASSERT (_entry_point <= _intrinsic_duration);
+	if (_entry_point) {
+		_duration = intrinsic_duration - *_entry_point;
+	}
+
+	DCP_ASSERT (!_entry_point || *_entry_point <= _intrinsic_duration);
 }
 
 
diff --git a/src/reel_asset.h b/src/reel_asset.h
index 200c49ff..6de7f1be 100644
--- a/src/reel_asset.h
+++ b/src/reel_asset.h
@@ -79,7 +79,7 @@ public:
 	 *  @param intrinsic_duration Intrinsic duration of this asset
 	 *  @param entry_point Entry point to use in that asset
 	 */
-	ReelAsset (std::string id, Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point);
+	ReelAsset (std::string id, Fraction edit_rate, int64_t intrinsic_duration, boost::optional<int64_t> entry_point);
 
 	explicit ReelAsset (std::shared_ptr<const cxml::Node>);
 
diff --git a/src/reel_markers_asset.cc b/src/reel_markers_asset.cc
index 0dd3cf29..5a079071 100644
--- a/src/reel_markers_asset.cc
+++ b/src/reel_markers_asset.cc
@@ -54,8 +54,8 @@ using std::shared_ptr;
 using namespace dcp;
 
 
-ReelMarkersAsset::ReelMarkersAsset (Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point)
-	: ReelAsset (make_uuid(), edit_rate, intrinsic_duration, entry_point)
+ReelMarkersAsset::ReelMarkersAsset (Fraction edit_rate, int64_t intrinsic_duration)
+	: ReelAsset (make_uuid(), edit_rate, intrinsic_duration, {})
 {
 
 }
diff --git a/src/reel_markers_asset.h b/src/reel_markers_asset.h
index e3fbb962..df87dcce 100644
--- a/src/reel_markers_asset.h
+++ b/src/reel_markers_asset.h
@@ -48,7 +48,7 @@ namespace dcp {
 class ReelMarkersAsset : public ReelAsset
 {
 public:
-	ReelMarkersAsset (Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point);
+	ReelMarkersAsset (Fraction edit_rate, int64_t intrinsic_duration);
 	explicit ReelMarkersAsset (std::shared_ptr<const cxml::Node>);
 
 	xmlpp::Node* write_to_cpl (xmlpp::Node* node, Standard standard) const override;