diff --git a/android/app/build.gradle b/android/app/build.gradle
index 06845daf..1198b6fc 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -63,6 +63,7 @@ android {
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         minSdkVersion 19
+        multiDexEnabled true
     }
 
     signingConfigs {
diff --git a/lib/pages/danmaku/view.dart b/lib/pages/danmaku/view.dart
index dd7558d5..1ff7677c 100644
--- a/lib/pages/danmaku/view.dart
+++ b/lib/pages/danmaku/view.dart
@@ -34,7 +34,7 @@ class _PlDanmakuState extends State<PlDanmaku> {
   late double showArea;
   late double opacityVal;
   late double fontSizeVal;
-  late double danmakuSpeedVal;
+  late double danmakuDurationVal;
 
   @override
   void initState() {
@@ -68,7 +68,7 @@ class _PlDanmakuState extends State<PlDanmaku> {
     showArea = playerController.showArea;
     opacityVal = playerController.opacityVal;
     fontSizeVal = playerController.fontSizeVal;
-    danmakuSpeedVal = playerController.danmakuSpeedVal;
+    danmakuDurationVal = playerController.danmakuDurationVal;
   }
 
   // 播放器状态监听
@@ -156,7 +156,7 @@ class _PlDanmakuState extends State<PlDanmaku> {
   @override
   Widget build(BuildContext context) {
     return LayoutBuilder(builder: (context, box) {
-      double initDuration = box.maxWidth / 12;
+      // double initDuration = box.maxWidth / 12;
       return Obx(
         () => AnimatedOpacity(
           opacity: playerController.isOpenDanmu.value ? 1 : 0,
@@ -172,8 +172,9 @@ class _PlDanmakuState extends State<PlDanmaku> {
               hideTop: blockTypes.contains(5),
               hideScroll: blockTypes.contains(2),
               hideBottom: blockTypes.contains(4),
-              duration: initDuration /
-                  (danmakuSpeedVal * widget.playerController.playbackSpeed),
+              duration: danmakuDurationVal / widget.playerController.playbackSpeed,
+              // initDuration /
+              //     (danmakuSpeedVal * widget.playerController.playbackSpeed),
             ),
             statusChanged: (isPlaying) {},
           ),
diff --git a/lib/pages/video/detail/view.dart b/lib/pages/video/detail/view.dart
index 96a8b8fd..f02fcd6d 100644
--- a/lib/pages/video/detail/view.dart
+++ b/lib/pages/video/detail/view.dart
@@ -244,7 +244,8 @@ class _VideoDetailPageState extends State<VideoDetailPage>
     }
     Widget childWhenDisabled = SafeArea(
       top: MediaQuery.of(context).orientation == Orientation.portrait,
-      bottom: MediaQuery.of(context).orientation == Orientation.portrait,
+      bottom: MediaQuery.of(context).orientation == Orientation.portrait
+          && plPlayerController!.isFullScreen.value,
       left: !plPlayerController!.isFullScreen.value,
       right: !plPlayerController!.isFullScreen.value,
       child: Stack(
@@ -432,7 +433,8 @@ class _VideoDetailPageState extends State<VideoDetailPage>
               // },
               /// 不收回
               pinnedHeaderSliverHeightBuilder: () {
-                return pinnedHeaderHeight;
+                return plPlayerController!.isFullScreen.value ?
+                MediaQuery.of(context).size.height: pinnedHeaderHeight;
               },
               onlyOneScrollInBody: true,
               body: Container(
diff --git a/lib/pages/video/detail/widgets/header_control.dart b/lib/pages/video/detail/widgets/header_control.dart
index 5c2491a0..c07afbb6 100644
--- a/lib/pages/video/detail/widgets/header_control.dart
+++ b/lib/pages/video/detail/widgets/header_control.dart
@@ -585,7 +585,7 @@ class _HeaderControlState extends State<HeaderControl> {
     // 字体大小
     double fontSizeVal = widget.controller!.fontSizeVal;
     // 弹幕速度
-    double danmakuSpeedVal = widget.controller!.danmakuSpeedVal;
+    double danmakuDurationVal = widget.controller!.danmakuDurationVal;
 
     DanmakuController danmakuController = widget.controller!.danmakuController!;
     await showModalBottomSheet(
@@ -755,7 +755,7 @@ class _HeaderControlState extends State<HeaderControl> {
                       ),
                     ),
                   ),
-                  Text('弹幕时长 ${danmakuSpeedVal.toString()}'),
+                  Text('弹幕时长 ${danmakuDurationVal.toString()} 秒'),
                   Padding(
                     padding: const EdgeInsets.only(
                       top: 0,
@@ -773,20 +773,21 @@ class _HeaderControlState extends State<HeaderControl> {
                             enabledThumbRadius: 6.0),
                       ),
                       child: Slider(
-                        min: 1,
-                        max: 8,
-                        value: danmakuSpeedVal,
-                        divisions: 14,
-                        label: danmakuSpeedVal.toString(),
+                        min: 2,
+                        max: 16,
+                        value: danmakuDurationVal,
+                        divisions: 28,
+                        label: danmakuDurationVal.toString(),
                         onChanged: (double val) {
-                          danmakuSpeedVal = val;
-                          widget.controller!.danmakuSpeedVal = danmakuSpeedVal;
+                          danmakuDurationVal = val;
+                          widget.controller!.danmakuDurationVal = danmakuDurationVal;
                           setState(() {});
                           try {
                             DanmakuOption currentOption =
                                 danmakuController.option;
                             DanmakuOption updatedOption =
-                                currentOption.copyWith(duration: val);
+                                currentOption.copyWith(duration:
+                                  val/widget.controller!.playbackSpeed);
                             danmakuController.updateOption(updatedOption);
                           } catch (_) {}
                         },
diff --git a/lib/plugin/pl_player/controller.dart b/lib/plugin/pl_player/controller.dart
index ff3857ba..eee652b9 100644
--- a/lib/plugin/pl_player/controller.dart
+++ b/lib/plugin/pl_player/controller.dart
@@ -221,7 +221,7 @@ class PlPlayerController {
   late double showArea;
   late double opacityVal;
   late double fontSizeVal;
-  late double danmakuSpeedVal;
+  late double danmakuDurationVal;
   late List speedsList;
   // 缓存
   double? defaultDuration;
@@ -268,9 +268,9 @@ class PlPlayerController {
     // 字体大小
     fontSizeVal =
         localCache.get(LocalCacheKey.danmakuFontScale, defaultValue: 1.0);
-    // 弹幕速度
-    danmakuSpeedVal =
-        localCache.get(LocalCacheKey.danmakuSpeed, defaultValue: 4.0);
+    // 弹幕时间
+    danmakuDurationVal =
+        localCache.get(LocalCacheKey.danmakuDuration, defaultValue: 4.0);
     playRepeat = PlayRepeat.values.toList().firstWhere(
           (e) =>
               e.value ==
@@ -937,32 +937,13 @@ class PlPlayerController {
     if (!isFullScreen.value && status) {
       /// 按照视频宽高比决定全屏方向
       toggleFullScreen(true);
-      switch (mode) {
-        case FullScreenMode.auto:
-          if (direction.value == 'horizontal') {
-            /// 进入全屏
-            await enterFullScreen();
-            // 横屏
-            await landScape();
-          } else {
-            // 竖屏
-            await verticalScreen();
-          }
-          break;
-        case FullScreenMode.vertical:
-
-          /// 进入全屏
-          await enterFullScreen();
-          // 竖屏
-          await verticalScreen();
-          break;
-        case FullScreenMode.horizontal:
-
-          /// 进入全屏
-          await enterFullScreen();
-          // 横屏
-          await landScape();
-          break;
+      /// 进入全屏
+      await enterFullScreen();
+      if(mode == FullScreenMode.vertical ||
+          (mode == FullScreenMode.auto && direction.value == 'vertical')) {
+        await verticalScreen();
+      } else {
+        await landScape();
       }
 
       // bool isValid =
@@ -1097,7 +1078,7 @@ class PlPlayerController {
       localCache.put(LocalCacheKey.danmakuShowArea, showArea);
       localCache.put(LocalCacheKey.danmakuOpacity, opacityVal);
       localCache.put(LocalCacheKey.danmakuFontScale, fontSizeVal);
-      localCache.put(LocalCacheKey.danmakuSpeed, danmakuSpeedVal);
+      localCache.put(LocalCacheKey.danmakuDuration, danmakuDurationVal);
 
       var pp = _videoPlayerController!.platform as NativePlayer;
       await pp.setProperty('audio-files', '');
diff --git a/lib/plugin/pl_player/widgets/bottom_control.dart b/lib/plugin/pl_player/widgets/bottom_control.dart
index dfb2c6a0..1fd8aa65 100644
--- a/lib/plugin/pl_player/widgets/bottom_control.dart
+++ b/lib/plugin/pl_player/widgets/bottom_control.dart
@@ -26,8 +26,8 @@ class BottomControl extends StatelessWidget implements PreferredSizeWidget {
 
     return Container(
       color: Colors.transparent,
-      height: 85,
-      padding: const EdgeInsets.only(left: 14, right: 14),
+      height: 90,
+      padding: const EdgeInsets.only(left: 18, right: 18),
       child: Column(
         mainAxisAlignment: MainAxisAlignment.end,
         children: [
@@ -50,8 +50,8 @@ class BottomControl extends StatelessWidget implements PreferredSizeWidget {
                   bufferedBarColor: colorTheme.withOpacity(0.4),
                   timeLabelLocation: TimeLabelLocation.none,
                   thumbColor: colorTheme,
-                  barHeight: 3.0,
-                  thumbRadius: 5.5,
+                  barHeight: 3.5,
+                  thumbRadius: 7,
                   onDragStart: (duration) {
                     feedBack();
                     _.onChangedSliderStart();
diff --git a/lib/utils/storage.dart b/lib/utils/storage.dart
index 3f187638..44cb162a 100644
--- a/lib/utils/storage.dart
+++ b/lib/utils/storage.dart
@@ -154,12 +154,12 @@ class LocalCacheKey {
   static const String wbiKeys = 'wbiKeys';
   static const String timeStamp = 'timeStamp';
 
-  // 弹幕相关设置 屏蔽类型 显示区域 透明度 字体大小 弹幕速度
+  // 弹幕相关设置 屏蔽类型 显示区域 透明度 字体大小 弹幕时间
   static const String danmakuBlockType = 'danmakuBlockType';
   static const String danmakuShowArea = 'danmakuShowArea';
   static const String danmakuOpacity = 'danmakuOpacity';
   static const String danmakuFontScale = 'danmakuFontScale';
-  static const String danmakuSpeed = 'danmakuSpeed';
+  static const String danmakuDuration = 'danmakuDuration';
 
   // 代理host port
   static const String systemProxyHost = 'systemProxyHost';