diff --git a/app/src/main/res/layout/activity_simple.xml b/app/src/main/res/layout/activity_simple.xml
index c19b86c9..95248d6c 100644
--- a/app/src/main/res/layout/activity_simple.xml
+++ b/app/src/main/res/layout/activity_simple.xml
@@ -6,11 +6,13 @@
     android:layout_height="match_parent"
     android:background="#000000">
 
+    <!--slow down half,if set durationScaleRatio = 5,means to accelerate 5 times-->
     <com.opensource.svgaplayer.SVGAImageView
         android:layout_height="match_parent"
         android:layout_width="match_parent"
         android:scaleType="fitCenter"
         app:source="angel.svga"
+        app:durationScaleRatio="0.5"
         app:antiAlias="true"/>
 
 </RelativeLayout>
\ No newline at end of file
diff --git a/library/src/main/java/com/opensource/svgaplayer/SVGAImageView.kt b/library/src/main/java/com/opensource/svgaplayer/SVGAImageView.kt
index 3c1759ab..b2c7e1cc 100644
--- a/library/src/main/java/com/opensource/svgaplayer/SVGAImageView.kt
+++ b/library/src/main/java/com/opensource/svgaplayer/SVGAImageView.kt
@@ -34,6 +34,9 @@ open class SVGAImageView : ImageView {
 
     var fillMode: FillMode = FillMode.Forward
 
+    // =0 means default speed，>1 speed up，<1 Slow down
+    var durationScaleRatio: Float = 0f
+
     var callback: SVGACallback? = null
 
     private var animator: ValueAnimator? = null
@@ -73,6 +76,7 @@ open class SVGAImageView : ImageView {
     private fun loadAttrs(attrs: AttributeSet) {
         val typedArray = context.theme.obtainStyledAttributes(attrs, R.styleable.SVGAImageView, 0, 0)
         loops = typedArray.getInt(R.styleable.SVGAImageView_loopCount, 0)
+        durationScaleRatio = typedArray.getFloat(R.styleable.SVGAImageView_durationScaleRatio, 0f)  //new attr to adjust speed of animation
         clearsAfterStop = typedArray.getBoolean(R.styleable.SVGAImageView_clearsAfterStop, true)
         val antiAlias = typedArray.getBoolean(R.styleable.SVGAImageView_antiAlias, true)
         val autoPlay = typedArray.getBoolean(R.styleable.SVGAImageView_autoPlay, true)
@@ -143,6 +147,12 @@ open class SVGAImageView : ImageView {
             } catch (e: Exception) {}
             animator.interpolator = LinearInterpolator()
             animator.duration = ((endFrame - startFrame + 1) * (1000 / it.FPS) / durationScale).toLong()
+
+            //Adjust the duration,and no need to modify the .svga file.
+            if (durationScaleRatio > 0) {
+                animator.duration = (animator.duration / durationScaleRatio).toLong()
+            }
+
             animator.repeatCount = if (loops <= 0) 99999 else loops - 1
             animator.addUpdateListener {
                 drawable.currentFrame = animator.animatedValue as Int
diff --git a/library/src/main/res/values/attrs.xml b/library/src/main/res/values/attrs.xml
index 218d96e6..ce69b6e4 100644
--- a/library/src/main/res/values/attrs.xml
+++ b/library/src/main/res/values/attrs.xml
@@ -6,6 +6,7 @@
         <attr name="antiAlias" format="boolean" />
         <attr name="loopCount" format="integer" />
         <attr name="clearsAfterStop" format="boolean" />
+        <attr name="durationScaleRatio" format="float" />
         <attr name="fillMode" format="enum">
             <enum name="Backward" value="0" />
             <enum name="Forward" value="1" />