diff --git a/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt b/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt
index 7e8495d6..5223cefc 100644
--- a/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt
+++ b/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt
@@ -99,10 +99,7 @@ class VideoDetailFragment() : MainFragment() {
     }
 
     private fun isSmallWindow(): Boolean {
-        return min(
-            resources.configuration.screenWidthDp,
-            resources.configuration.screenHeightDp
-        ) < resources.getInteger(R.integer.column_width_dp) * 2
+        return resources.configuration.smallestScreenWidthDp < resources.getInteger(R.integer.column_width_dp) * 2
     }
 
     private fun isAutoRotateEnabled(): Boolean {
@@ -122,6 +119,7 @@ class VideoDetailFragment() : MainFragment() {
             isSmallWindow
             && newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE
             && !isFullscreen
+            && !isInPictureInPicture
             && state == State.MAXIMIZED
         ) {
             _viewDetail?.setFullscreen(true)
@@ -158,6 +156,8 @@ class VideoDetailFragment() : MainFragment() {
         ) {
             _viewDetail?.setFullscreen(true)
         }
+
+        updateOrientation()
     }
 
     fun updateOrientation() {
@@ -167,7 +167,7 @@ class VideoDetailFragment() : MainFragment() {
         val rotationLock = StatePlayer.instance.rotationLock
         val alwaysAllowReverseLandscapeAutoRotate = Settings.instance.playback.alwaysAllowReverseLandscapeAutoRotate
 
-        val isLandscapeVideo: Boolean = _viewDetail?.isLandscapeVideo() ?: false
+        val isLandscapeVideo: Boolean = _viewDetail?.isLandscapeVideo() ?: true
 
         val isSmallWindow = isSmallWindow()
         val autoRotateEnabled = isAutoRotateEnabled()
diff --git a/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailView.kt b/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailView.kt
index 0b6764a0..22f7ffa2 100644
--- a/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailView.kt
+++ b/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailView.kt
@@ -2384,8 +2384,13 @@ class VideoDetailView : ConstraintLayout {
     }
 
     fun isLandscapeVideo(): Boolean? {
-        val videoSourceWidth = _player.exoPlayer?.player?.videoSize?.width
-        val videoSourceHeight = _player.exoPlayer?.player?.videoSize?.height
+        var videoSourceWidth = _player.exoPlayer?.player?.videoSize?.width
+        var videoSourceHeight = _player.exoPlayer?.player?.videoSize?.height
+
+        if (video?.video?.videoSources?.isNotEmpty() == true && (videoSourceWidth == null || videoSourceHeight == null || videoSourceWidth == 0 || videoSourceHeight == 0)) {
+            videoSourceWidth = video?.video?.videoSources!![0].width
+            videoSourceHeight = video?.video?.videoSources!![0].height
+        }
 
         return if (videoSourceWidth == null || videoSourceHeight == null || videoSourceWidth == 0 || videoSourceHeight == 0){
             null
diff --git a/app/src/main/java/com/futo/platformplayer/views/video/FutoVideoPlayer.kt b/app/src/main/java/com/futo/platformplayer/views/video/FutoVideoPlayer.kt
index 79da5ba6..ec0345fb 100644
--- a/app/src/main/java/com/futo/platformplayer/views/video/FutoVideoPlayer.kt
+++ b/app/src/main/java/com/futo/platformplayer/views/video/FutoVideoPlayer.kt
@@ -592,11 +592,6 @@ class FutoVideoPlayer : FutoVideoPlayerBase {
 
     @OptIn(UnstableApi::class)
     fun setFullScreen(fullScreen: Boolean) {
-        // prevent fullscreen before the video has loaded to make sure we know whether it's a vertical or horizontal video
-        if(exoPlayer?.player?.videoSize?.height ?: 0 == 0 && fullScreen){
-            return
-        }
-
         updateRotateLock()
 
         if (isFullScreen == fullScreen) {