Default fade duration is now configurable from Kdenlive Settings > Misc

data/effects/fade_from_black.xml

@@ -3,7 +3,7 @@
 	<name>Fade from Black</name>
 	<description>Fade video from black</description>
 	<author>Charles Yates</author>
-	<parameter type="position" name="out" max="90000" min="0" default="75">
+	<parameter type="position" name="out" max="90000" min="0" default="%fade">
 		<name>Duration</name>
 	</parameter>
 	<parameter type="fixed" name="in" max="0" min="0" default="0">

data/effects/fade_to_black.xml

@@ -3,7 +3,7 @@
 	<name>Fade to Black</name>
 	<description>Fade video to black</description>
 	<author>Charles Yates</author>
-	<parameter type="position" name="in" max="0" min="0" default="-75">
+	<parameter type="position" name="in" max="0" min="0" default="-%fade">
 		<name>Duration</name>
 	</parameter>
 	<parameter type="fixed" name="out" max="99999" min="0" default="%out">

data/effects/fadein.xml

@@ -6,7 +6,7 @@
 	<parameter type="fixed" name="in" max="0" min="0" default="0">
 		<name></name>
 	</parameter>
-	<parameter type="position" name="out" max="90000" min="0" default="75">
+	<parameter type="position" name="out" max="90000" min="0" default="%fade">
 		<name>Duration</name>
 	</parameter>
 	<parameter type="fixed" name="gain" max="0" min="0" default="0">

data/effects/fadeout.xml

@@ -3,7 +3,7 @@
 	<name>Fade out</name>
 	<description>Fade out audio track</description>
 	<author></author>
-	<parameter type="position" name="in" max="0" min="0" default="-75">
+	<parameter type="position" name="in" max="0" min="0" default="-%fade">
 		<name>Duration</name>
 	</parameter>
 	<parameter type="fixed" name="out" max="90000" min="0" default="%out">

src/assets/model/assetparametermodel.cpp

@@ -513,13 +513,14 @@ QVariant AssetParameterModel::parseAttribute(const ObjectId &owner, const QStrin
         int height = profile->height();
         int in = pCore->getItemIn(owner);
         int out = in + pCore->getItemDuration(owner);
-
+        int frame_duration = pCore->getDurationFromString(KdenliveSettings::fade_duration());
         // replace symbols in the double parameter
         content.replace(QLatin1String("%maxWidth"), QString::number(width))
             .replace(QLatin1String("%maxHeight"), QString::number(height))
             .replace(QLatin1String("%width"), QString::number(width))
             .replace(QLatin1String("%height"), QString::number(height))
-            .replace(QLatin1String("%out"), QString::number(out));
+            .replace(QLatin1String("%out"), QString::number(out))
+            .replace(QLatin1String("%fade"), QString::number(frame_duration));
 
         if (type == ParamType::Double || type == ParamType::Hidden) {
             // Use a Mlt::Properties to parse mathematical operators

src/core.cpp

@@ -752,3 +752,9 @@ QString Core::getTimelineClipBinId(int cid)
     }
     return QString();
 }
+
+int Core::getDurationFromString(const QString &time)
+{
+    const QString duration = currentDoc()->timecode().reformatSeparators(time);
+    return currentDoc()->timecode().getFrameCount(duration);
+}

src/core.h

@@ -195,6 +195,8 @@ public:
     QString getProjectFolderName();
     /** @brief Returns a timeline clip's bin id */
     QString getTimelineClipBinId(int cid);
+    /** @brief Returns a frame duration from a timecode */
+    int getDurationFromString(const QString &time);
 
 private:
     explicit Core();

src/kdenlivesettings.kcfg

@@ -62,6 +62,11 @@
       <label>Default image sequence frame duration.</label>
       <default>00:00:00:01</default>
     </entry>
+    
+    <entry name="fade_duration" type="String">
+      <label>Default image sequence frame duration.</label>
+      <default>00:00:03:00</default>
+    </entry>
 
     <entry name="autoimagesequence" type="Bool">
       <label>Automatically import image sequences.</label>

src/ui/configmisc_ui.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>414</width>
-    <height>546</height>
+    <width>714</width>
+    <height>771</height>
    </rect>
   </property>
   <layout class="QGridLayout" name="gridLayout_2">
@@ -95,6 +95,16 @@
         </property>
        </widget>
       </item>
+      <item row="2" column="2">
+       <widget class="QLabel" name="label_6">
+        <property name="text">
+         <string>Fades</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="3">
+       <widget class="QLineEdit" name="kcfg_fade_duration"/>
+      </item>
      </layout>
     </widget>
    </item>