diff --git a/Spine/Exporters/VideoExporter.cs b/Spine/Exporters/VideoExporter.cs
index c3755dd..e1bb672 100644
--- a/Spine/Exporters/VideoExporter.cs
+++ b/Spine/Exporters/VideoExporter.cs
@@ -55,6 +55,21 @@ namespace Spine.Exporters
         }
         protected float _fps = 24;
 
+        public float Speed
+        {
+            get => _speed;
+            set
+            {
+                if (_speed <= 0)
+                {
+                    _logger.Warn("Omit invalid speed: {0}", value);
+                    return;
+                }
+                _speed = value;
+            }
+        }
+        protected float _speed = 1f;
+
         /// <summary>
         /// 是否保留最后一帧
         /// </summary>
@@ -92,7 +107,7 @@ namespace Spine.Exporters
             // 导出完整帧
             for (int i = 0; i < total; i++)
             {
-                foreach (var spine in spines) spine.Update(delta);
+                foreach (var spine in spines) spine.Update(delta * _speed);
                 yield return GetFrame(spines);
             }
 
@@ -100,7 +115,7 @@ namespace Spine.Exporters
             if (hasFinal)
             {
                 // XXX: 此处还是按照完整的一帧时长进行更新, 也许可以只更新准确的最后一帧时长
-                foreach (var spine in spines) spine.Update(delta); 
+                foreach (var spine in spines) spine.Update(delta * _speed); 
                 yield return GetFrame(spines);
             }
         }
diff --git a/SpineViewer/Resources/Strings/en.xaml b/SpineViewer/Resources/Strings/en.xaml
index c9cc4d0..4f4399d 100644
--- a/SpineViewer/Resources/Strings/en.xaml
+++ b/SpineViewer/Resources/Strings/en.xaml
@@ -167,6 +167,8 @@
     <s:String x:Key="Str_ExportDurationTooltip">Export duration; if less than 0, the maximum duration of all animations in all models will be used during export.</s:String>
 
     <s:String x:Key="Str_Fps">FPS</s:String>
+    <s:String x:Key="Str_ExportSpeed">Export Speed</s:String>
+    <s:String x:Key="Str_ExportSpeedTooltip">Export speed factor; only affects the animation speed of the model, not the export duration or frame rate.</s:String>
     <s:String x:Key="Str_KeepLastFrame">Keep Last Frame</s:String>
     <s:String x:Key="Str_KeepLastFrameTooltip">When keeping the last frame, animation is smoother but frame count may be one higher</s:String>
 
diff --git a/SpineViewer/Resources/Strings/ja.xaml b/SpineViewer/Resources/Strings/ja.xaml
index cce1f50..86dcaf9 100644
--- a/SpineViewer/Resources/Strings/ja.xaml
+++ b/SpineViewer/Resources/Strings/ja.xaml
@@ -167,6 +167,8 @@
     <s:String x:Key="Str_ExportDurationTooltip">エクスポート時間。0 未満の場合、エクスポート時にすべてのモデルのすべてのアニメーションの最大時間が使用されます。</s:String>
 
     <s:String x:Key="Str_Fps">FPS</s:String>
+    <s:String x:Key="Str_ExportSpeed">エクスポート速度</s:String>
+    <s:String x:Key="Str_ExportSpeedTooltip">エクスポート速度係数。モデルの動作速度のみに影響し、エクスポート時間やフレームレートなどには影響しません。</s:String>
     <s:String x:Key="Str_KeepLastFrame">最後のフレームを保持</s:String>
     <s:String x:Key="Str_KeepLastFrameTooltip">最後のフレームを保持すると、アニメーションはより連続して見えますが、フレーム数が予想より1フレーム多くなる可能性があります</s:String>
 
diff --git a/SpineViewer/Resources/Strings/zh.xaml b/SpineViewer/Resources/Strings/zh.xaml
index af3f2c2..2a3eab0 100644
--- a/SpineViewer/Resources/Strings/zh.xaml
+++ b/SpineViewer/Resources/Strings/zh.xaml
@@ -167,6 +167,8 @@
     <s:String x:Key="Str_ExportDurationTooltip">导出时长，如果小于 0，则在导出时使用所有模型所有动画的最大时长</s:String>
 
     <s:String x:Key="Str_Fps">帧率</s:String>
+    <s:String x:Key="Str_ExportSpeed">导出速度</s:String>
+    <s:String x:Key="Str_ExportSpeedTooltip">导出速度因子, 仅影响模型的动作速度, 不影响导出时长和帧率等参数</s:String>
     <s:String x:Key="Str_KeepLastFrame">保留最后一帧</s:String>
     <s:String x:Key="Str_KeepLastFrameTooltip">当设置保留最后一帧时，动图会更为连贯，但是帧数可能比预期帧数多 1</s:String>
 
diff --git a/SpineViewer/ViewModels/Exporters/CustomFFmpegExporterViewModel.cs b/SpineViewer/ViewModels/Exporters/CustomFFmpegExporterViewModel.cs
index c31f8c2..bb90b00 100644
--- a/SpineViewer/ViewModels/Exporters/CustomFFmpegExporterViewModel.cs
+++ b/SpineViewer/ViewModels/Exporters/CustomFFmpegExporterViewModel.cs
@@ -64,6 +64,7 @@ namespace SpineViewer.ViewModels.Exporters
             {
                 BackgroundColor = new(_backgroundColor.R, _backgroundColor.G, _backgroundColor.B, _backgroundColor.A),
                 Fps = _fps,
+                Speed = _speed,
                 KeepLast = _keepLast,
                 Format = _format,
                 Codec = _codec,
diff --git a/SpineViewer/ViewModels/Exporters/FFmpegVideoExporterViewModel.cs b/SpineViewer/ViewModels/Exporters/FFmpegVideoExporterViewModel.cs
index 37471ff..5af1e78 100644
--- a/SpineViewer/ViewModels/Exporters/FFmpegVideoExporterViewModel.cs
+++ b/SpineViewer/ViewModels/Exporters/FFmpegVideoExporterViewModel.cs
@@ -54,6 +54,7 @@ namespace SpineViewer.ViewModels.Exporters
             {
                 BackgroundColor = new(_backgroundColor.R, _backgroundColor.G, _backgroundColor.B, _backgroundColor.A),
                 Fps = _fps,
+                Speed = _speed,
                 KeepLast = _keepLast,
                 Format = _format,
                 Loop = _loop,
diff --git a/SpineViewer/ViewModels/Exporters/FrameSequenceExporterViewModel.cs b/SpineViewer/ViewModels/Exporters/FrameSequenceExporterViewModel.cs
index fab8999..ac91c91 100644
--- a/SpineViewer/ViewModels/Exporters/FrameSequenceExporterViewModel.cs
+++ b/SpineViewer/ViewModels/Exporters/FrameSequenceExporterViewModel.cs
@@ -34,6 +34,7 @@ namespace SpineViewer.ViewModels.Exporters
             {
                 BackgroundColor = new(_backgroundColor.R, _backgroundColor.G, _backgroundColor.B, _backgroundColor.A),
                 Fps = _fps,
+                Speed = _speed,
                 KeepLast = _keepLast
             };
 
diff --git a/SpineViewer/ViewModels/Exporters/VideoExporterViewModel.cs b/SpineViewer/ViewModels/Exporters/VideoExporterViewModel.cs
index 43353ec..460ef92 100644
--- a/SpineViewer/ViewModels/Exporters/VideoExporterViewModel.cs
+++ b/SpineViewer/ViewModels/Exporters/VideoExporterViewModel.cs
@@ -16,6 +16,9 @@ namespace SpineViewer.ViewModels.Exporters
         public uint Fps { get => _fps; set => SetProperty(ref _fps, Math.Max(1, value)); }
         protected uint _fps = 30;
 
+        public float  Speed { get => _speed; set => SetProperty(ref _speed, Math.Clamp(value, 0.001f, 1000f)); }
+        protected float _speed = 1f;
+
         public bool KeepLast { get => _keepLast; set => SetProperty(ref _keepLast, value); }
         protected bool _keepLast = true;
     }
diff --git a/SpineViewer/Views/ExporterDialogs/CustomFFmpegExporterDialog.xaml b/SpineViewer/Views/ExporterDialogs/CustomFFmpegExporterDialog.xaml
index 66a0a53..0cf7b22 100644
--- a/SpineViewer/Views/ExporterDialogs/CustomFFmpegExporterDialog.xaml
+++ b/SpineViewer/Views/ExporterDialogs/CustomFFmpegExporterDialog.xaml
@@ -67,6 +67,7 @@
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
+                        <RowDefinition Height="Auto"/>
                         <RowDefinition Height="60"/>
                     </Grid.RowDefinitions>
 
@@ -122,38 +123,42 @@
                     <Label Grid.Row="10" Grid.Column="0" Content="{DynamicResource Str_Fps}"/>
                     <TextBox Grid.Row="10" Grid.Column="1" Text="{Binding Fps}"/>
 
-                    <!-- 是否保留最后一帧 -->
-                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_KeepLastFrame}" ToolTip="{DynamicResource Str_KeepLastFrameTooltip}"/>
-                    <ToggleButton Grid.Row="11" Grid.Column="1" IsChecked="{Binding KeepLast}" ToolTip="{DynamicResource Str_KeelLastFrameTooltip}"/>
+                    <!-- 导出速度 -->
+                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_ExportSpeed}" ToolTip="{DynamicResource Str_ExportSpeedTooltip}"/>
+                    <TextBox Grid.Row="11" Grid.Column="1" Text="{Binding Speed}" ToolTip="{DynamicResource Str_ExportSpeedTooltip}"/>
 
-                    <Separator Grid.Row="12" Grid.ColumnSpan="2" Height="10"/>
+                    <!-- 是否保留最后一帧 -->
+                    <Label Grid.Row="12" Grid.Column="0" Content="{DynamicResource Str_KeepLastFrame}" ToolTip="{DynamicResource Str_KeepLastFrameTooltip}"/>
+                    <ToggleButton Grid.Row="12" Grid.Column="1" IsChecked="{Binding KeepLast}" ToolTip="{DynamicResource Str_KeelLastFrameTooltip}"/>
+
+                    <Separator Grid.Row="13" Grid.ColumnSpan="2" Height="10"/>
 
                     <!-- 导出格式 -->
-                    <Label Grid.Row="13" Grid.Column="0" Content="{DynamicResource Str_FFmpegFormat}" ToolTip="{DynamicResource Str_FFmpegFormatTooltip}"/>
-                    <TextBox Grid.Row="13" Grid.Column="1" Text="{Binding Format}" ToolTip="{DynamicResource Str_FFmpegFormatTooltip}"/>
+                    <Label Grid.Row="14" Grid.Column="0" Content="{DynamicResource Str_FFmpegFormat}" ToolTip="{DynamicResource Str_FFmpegFormatTooltip}"/>
+                    <TextBox Grid.Row="14" Grid.Column="1" Text="{Binding Format}" ToolTip="{DynamicResource Str_FFmpegFormatTooltip}"/>
 
                     <!-- 编码器 -->
-                    <Label Grid.Row="14" Grid.Column="0" Content="{DynamicResource Str_FFmpegCodec}" ToolTip="{DynamicResource Str_FFmpegCodecTooltip}"/>
-                    <TextBox Grid.Row="14" Grid.Column="1" Text="{Binding Codec}" ToolTip="{DynamicResource Str_FFmpegCodecTooltip}"/>
+                    <Label Grid.Row="15" Grid.Column="0" Content="{DynamicResource Str_FFmpegCodec}" ToolTip="{DynamicResource Str_FFmpegCodecTooltip}"/>
+                    <TextBox Grid.Row="15" Grid.Column="1" Text="{Binding Codec}" ToolTip="{DynamicResource Str_FFmpegCodecTooltip}"/>
 
                     <!-- 像素格式 -->
-                    <Label Grid.Row="15" Grid.Column="0" Content="{DynamicResource Str_FFmpegPixelFormat}" ToolTip="{DynamicResource Str_FFmpegPixelFormatTooltip}"/>
-                    <TextBox Grid.Row="15" Grid.Column="1" Text="{Binding PixelFormat}" ToolTip="{DynamicResource Str_FFmpegPixelFormatTooltip}"/>
+                    <Label Grid.Row="16" Grid.Column="0" Content="{DynamicResource Str_FFmpegPixelFormat}" ToolTip="{DynamicResource Str_FFmpegPixelFormatTooltip}"/>
+                    <TextBox Grid.Row="16" Grid.Column="1" Text="{Binding PixelFormat}" ToolTip="{DynamicResource Str_FFmpegPixelFormatTooltip}"/>
 
                     <!-- 比特率 -->
-                    <Label Grid.Row="16" Grid.Column="0" Content="{DynamicResource Str_FFmpegBitrate}" ToolTip="{DynamicResource Str_FFmpegBitrateTooltip}"/>
-                    <TextBox Grid.Row="16" Grid.Column="1" Text="{Binding Bitrate}" ToolTip="{DynamicResource Str_FFmpegBitrateTooltip}"/>
+                    <Label Grid.Row="17" Grid.Column="0" Content="{DynamicResource Str_FFmpegBitrate}" ToolTip="{DynamicResource Str_FFmpegBitrateTooltip}"/>
+                    <TextBox Grid.Row="17" Grid.Column="1" Text="{Binding Bitrate}" ToolTip="{DynamicResource Str_FFmpegBitrateTooltip}"/>
 
                     <!-- 滤镜 -->
-                    <Label Grid.Row="17" Grid.Column="0" Content="{DynamicResource Str_FFmpegFilter}" ToolTip="{DynamicResource Str_FFmpegFilterTooltip}"/>
-                    <TextBox Grid.Row="17" Grid.Column="1" Text="{Binding Filter}" ToolTip="{DynamicResource Str_FFmpegFilterTooltip}"/>
+                    <Label Grid.Row="18" Grid.Column="0" Content="{DynamicResource Str_FFmpegFilter}" ToolTip="{DynamicResource Str_FFmpegFilterTooltip}"/>
+                    <TextBox Grid.Row="18" Grid.Column="1" Text="{Binding Filter}" ToolTip="{DynamicResource Str_FFmpegFilterTooltip}"/>
 
                     <!-- 自定义参数 -->
-                    <Label Grid.Row="18" Grid.Column="0"
+                    <Label Grid.Row="19" Grid.Column="0"
                            VerticalAlignment="Top"
                            Content="{DynamicResource Str_FFmpegCustomArgs}" 
                            ToolTip="{DynamicResource Str_FFmpegCustomArgsTooltip}"/>
-                    <TextBox Grid.Row="18" Grid.Column="1"
+                    <TextBox Grid.Row="19" Grid.Column="1"
                              HorizontalContentAlignment="Left"
                              VerticalContentAlignment="Top"
                              TextWrapping="Wrap"
diff --git a/SpineViewer/Views/ExporterDialogs/FFmpegVideoExporterDialog.xaml b/SpineViewer/Views/ExporterDialogs/FFmpegVideoExporterDialog.xaml
index 394d3a1..a21e325 100644
--- a/SpineViewer/Views/ExporterDialogs/FFmpegVideoExporterDialog.xaml
+++ b/SpineViewer/Views/ExporterDialogs/FFmpegVideoExporterDialog.xaml
@@ -67,6 +67,7 @@
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
+                        <RowDefinition Height="Auto"/>
                     </Grid.RowDefinitions>
 
                     <!-- 水平分辨率 -->
@@ -121,31 +122,35 @@
                     <Label Grid.Row="10" Grid.Column="0" Content="{DynamicResource Str_Fps}"/>
                     <TextBox Grid.Row="10" Grid.Column="1" Text="{Binding Fps}"/>
 
-                    <!-- 是否保留最后一帧 -->
-                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_KeepLastFrame}" ToolTip="{DynamicResource Str_KeepLastFrameTooltip}"/>
-                    <ToggleButton Grid.Row="11" Grid.Column="1" IsChecked="{Binding KeepLast}" ToolTip="{DynamicResource Str_KeelLastFrameTooltip}"/>
+                    <!-- 导出速度 -->
+                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_ExportSpeed}" ToolTip="{DynamicResource Str_ExportSpeedTooltip}"/>
+                    <TextBox Grid.Row="11" Grid.Column="1" Text="{Binding Speed}" ToolTip="{DynamicResource Str_ExportSpeedTooltip}"/>
 
-                    <Separator Grid.Row="12" Grid.ColumnSpan="2" Height="10"/>
+                    <!-- 是否保留最后一帧 -->
+                    <Label Grid.Row="12" Grid.Column="0" Content="{DynamicResource Str_KeepLastFrame}" ToolTip="{DynamicResource Str_KeepLastFrameTooltip}"/>
+                    <ToggleButton Grid.Row="12" Grid.Column="1" IsChecked="{Binding KeepLast}" ToolTip="{DynamicResource Str_KeelLastFrameTooltip}"/>
+
+                    <Separator Grid.Row="13" Grid.ColumnSpan="2" Height="10"/>
 
                     <!-- 视频格式 -->
-                    <Label Grid.Row="13" Grid.Column="0" Content="{DynamicResource Str_VideoFormat}"/>
-                    <ComboBox Grid.Row="13" Grid.Column="1" SelectedItem="{Binding Format}" ItemsSource="{Binding VideoFormatOptions}"/>
+                    <Label Grid.Row="14" Grid.Column="0" Content="{DynamicResource Str_VideoFormat}"/>
+                    <ComboBox Grid.Row="14" Grid.Column="1" SelectedItem="{Binding Format}" ItemsSource="{Binding VideoFormatOptions}"/>
 
                     <!-- 动图是否循环 -->
-                    <Label Grid.Row="14" Grid.Column="0" Content="{DynamicResource Str_LoopPlay}" ToolTip="{DynamicResource Str_LoopPlayTooltip}"/>
-                    <ToggleButton Grid.Row="14" Grid.Column="1" IsChecked="{Binding Loop}" ToolTip="{DynamicResource Str_LoopPlayTooltip}"/>
+                    <Label Grid.Row="15" Grid.Column="0" Content="{DynamicResource Str_LoopPlay}" ToolTip="{DynamicResource Str_LoopPlayTooltip}"/>
+                    <ToggleButton Grid.Row="15" Grid.Column="1" IsChecked="{Binding Loop}" ToolTip="{DynamicResource Str_LoopPlayTooltip}"/>
 
                     <!-- 质量参数 -->
-                    <Label Grid.Row="15" Grid.Column="0" Content="{DynamicResource Str_QualityParameter}" ToolTip="{DynamicResource Str_QualityParameterTooltip}"/>
-                    <TextBox Grid.Row="15" Grid.Column="1" Text="{Binding Quality}" ToolTip="{DynamicResource Str_QualityParameterTooltip}"/>
+                    <Label Grid.Row="16" Grid.Column="0" Content="{DynamicResource Str_QualityParameter}" ToolTip="{DynamicResource Str_QualityParameterTooltip}"/>
+                    <TextBox Grid.Row="16" Grid.Column="1" Text="{Binding Quality}" ToolTip="{DynamicResource Str_QualityParameterTooltip}"/>
 
                     <!-- 无损压缩 -->
-                    <Label Grid.Row="16" Grid.Column="0" Content="{DynamicResource Str_LosslessParam}" ToolTip="{DynamicResource Str_LosslessParamTooltip}"/>
-                    <ToggleButton Grid.Row="16" Grid.Column="1" IsChecked="{Binding Lossless}" ToolTip="{DynamicResource Str_LosslessParamTooltip}"/>
+                    <Label Grid.Row="17" Grid.Column="0" Content="{DynamicResource Str_LosslessParam}" ToolTip="{DynamicResource Str_LosslessParamTooltip}"/>
+                    <ToggleButton Grid.Row="17" Grid.Column="1" IsChecked="{Binding Lossless}" ToolTip="{DynamicResource Str_LosslessParamTooltip}"/>
 
                     <!-- CRF 参数 -->
-                    <Label Grid.Row="17" Grid.Column="0" Content="{DynamicResource Str_CrfParameter}" ToolTip="{DynamicResource Str_CrfParameterTooltip}"/>
-                    <TextBox Grid.Row="17" Grid.Column="1" Text="{Binding Crf}" ToolTip="{DynamicResource Str_CrfParameterTooltip}"/>
+                    <Label Grid.Row="18" Grid.Column="0" Content="{DynamicResource Str_CrfParameter}" ToolTip="{DynamicResource Str_CrfParameterTooltip}"/>
+                    <TextBox Grid.Row="18" Grid.Column="1" Text="{Binding Crf}" ToolTip="{DynamicResource Str_CrfParameterTooltip}"/>
                 </Grid>
             </ScrollViewer>
            
diff --git a/SpineViewer/Views/ExporterDialogs/FrameSequenceExporterDialog.xaml b/SpineViewer/Views/ExporterDialogs/FrameSequenceExporterDialog.xaml
index 42d6811..9310b6b 100644
--- a/SpineViewer/Views/ExporterDialogs/FrameSequenceExporterDialog.xaml
+++ b/SpineViewer/Views/ExporterDialogs/FrameSequenceExporterDialog.xaml
@@ -62,6 +62,7 @@
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
+                        <RowDefinition Height="Auto"/>
                     </Grid.RowDefinitions>
 
                     <!-- 水平分辨率 -->
@@ -116,9 +117,13 @@
                     <Label Grid.Row="10" Grid.Column="0" Content="{DynamicResource Str_Fps}"/>
                     <TextBox Grid.Row="10" Grid.Column="1" Text="{Binding Fps}"/>
 
+                    <!-- 导出速度 -->
+                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_ExportSpeed}" ToolTip="{DynamicResource Str_ExportSpeedTooltip}"/>
+                    <TextBox Grid.Row="11" Grid.Column="1" Text="{Binding Speed}" ToolTip="{DynamicResource Str_ExportSpeedTooltip}"/>
+
                     <!-- 是否保留最后一帧 -->
-                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_KeepLastFrame}" ToolTip="{DynamicResource Str_KeepLastFrameTooltip}"/>
-                    <ToggleButton Grid.Row="11" Grid.Column="1" IsChecked="{Binding KeepLast}" ToolTip="{DynamicResource Str_KeelLastFrameTooltip}"/>
+                    <Label Grid.Row="12" Grid.Column="0" Content="{DynamicResource Str_KeepLastFrame}" ToolTip="{DynamicResource Str_KeepLastFrameTooltip}"/>
+                    <ToggleButton Grid.Row="12" Grid.Column="1" IsChecked="{Binding KeepLast}" ToolTip="{DynamicResource Str_KeelLastFrameTooltip}"/>
                 </Grid>
             </ScrollViewer>
         </Border>