diff --git a/__init__.py b/__init__.py
index 4b2d33b..583987a 100644
--- a/__init__.py
+++ b/__init__.py
@@ -15,21 +15,58 @@ bl_info = {
 
 def register():
     """Register all extension components."""
+    import bpy
+    from bpy.props import FloatProperty
+
     from . import operators
     from . import panels
-    
+
+    # Register scene properties for face detection parameters
+    bpy.types.Scene.facemask_conf_threshold = FloatProperty(
+        name="Confidence",
+        description="YOLO confidence threshold (higher = fewer false positives)",
+        default=0.5,
+        min=0.1,
+        max=1.0,
+        step=0.01,
+    )
+
+    bpy.types.Scene.facemask_iou_threshold = FloatProperty(
+        name="IOU Threshold",
+        description="Non-maximum suppression IOU threshold",
+        default=0.45,
+        min=0.1,
+        max=1.0,
+        step=0.01,
+    )
+
+    bpy.types.Scene.facemask_mask_scale = FloatProperty(
+        name="Mask Scale",
+        description="Scale factor for mask region (1.0 = exact face size)",
+        default=1.5,
+        min=1.0,
+        max=3.0,
+        step=0.1,
+    )
+
     operators.register()
     panels.register()
 
 
 def unregister():
     """Unregister all extension components."""
+    import bpy
     from . import operators
     from . import panels
-    
+
     panels.unregister()
     operators.unregister()
 
+    # Unregister scene properties
+    del bpy.types.Scene.facemask_conf_threshold
+    del bpy.types.Scene.facemask_iou_threshold
+    del bpy.types.Scene.facemask_mask_scale
+
 
 if __name__ == "__main__":
     register()
diff --git a/core/utils.py b/core/utils.py
new file mode 100644
index 0000000..701e5cd
--- /dev/null
+++ b/core/utils.py
@@ -0,0 +1,111 @@
+"""
+Utility functions for Face Mask extension.
+
+Provides helper functions for server status, cache info, etc.
+"""
+
+import os
+import urllib.request
+import urllib.error
+import json
+import tempfile
+from typing import Dict, Tuple, Optional
+
+
+def get_server_status() -> Dict:
+    """
+    Get server status and GPU information.
+
+    Returns:
+        dict: {
+            'running': bool,
+            'gpu_available': bool,
+            'gpu_device': str or None,
+            'gpu_count': int,
+            'rocm_version': str or None,
+        }
+    """
+    result = {
+        'running': False,
+        'gpu_available': False,
+        'gpu_device': None,
+        'gpu_count': 0,
+        'rocm_version': None,
+    }
+
+    try:
+        with urllib.request.urlopen("http://127.0.0.1:8181/status", timeout=1) as response:
+            data = json.loads(response.read().decode('utf-8'))
+            result['running'] = data.get('status') == 'running'
+            result['gpu_available'] = data.get('gpu_available', False)
+            result['gpu_device'] = data.get('gpu_device')
+            result['gpu_count'] = data.get('gpu_count', 0)
+            result['rocm_version'] = data.get('rocm_version')
+    except (urllib.error.URLError, ConnectionRefusedError, TimeoutError):
+        result['running'] = False
+
+    return result
+
+
+def get_cache_info(strip_name: Optional[str] = None) -> Tuple[str, int, int]:
+    """
+    Get cache directory information.
+
+    Args:
+        strip_name: If provided, get info for specific strip. Otherwise, get info for all cache.
+
+    Returns:
+        Tuple of (cache_path, total_size_bytes, file_count)
+    """
+    import bpy
+
+    blend_file = bpy.data.filepath
+
+    if strip_name:
+        # Get cache for specific strip
+        if blend_file:
+            project_dir = os.path.dirname(blend_file)
+            cache_path = os.path.join(project_dir, ".mask_cache", strip_name)
+        else:
+            cache_path = os.path.join(tempfile.gettempdir(), "blender_mask_cache", strip_name)
+    else:
+        # Get cache root
+        if blend_file:
+            project_dir = os.path.dirname(blend_file)
+            cache_path = os.path.join(project_dir, ".mask_cache")
+        else:
+            cache_path = os.path.join(tempfile.gettempdir(), "blender_mask_cache")
+
+    # Calculate size and count
+    total_size = 0
+    file_count = 0
+
+    if os.path.exists(cache_path):
+        for root, dirs, files in os.walk(cache_path):
+            for file in files:
+                if file.endswith('.png'):  # Only count mask images
+                    file_path = os.path.join(root, file)
+                    try:
+                        total_size += os.path.getsize(file_path)
+                        file_count += 1
+                    except OSError:
+                        pass
+
+    return cache_path, total_size, file_count
+
+
+def format_size(size_bytes: int) -> str:
+    """
+    Format bytes to human-readable size.
+
+    Args:
+        size_bytes: Size in bytes
+
+    Returns:
+        Formatted string (e.g., "1.5 MB")
+    """
+    for unit in ['B', 'KB', 'MB', 'GB']:
+        if size_bytes < 1024.0:
+            return f"{size_bytes:.1f} {unit}"
+        size_bytes /= 1024.0
+    return f"{size_bytes:.1f} TB"
diff --git a/operators/__init__.py b/operators/__init__.py
index bc3c68d..4b2005f 100644
--- a/operators/__init__.py
+++ b/operators/__init__.py
@@ -2,13 +2,16 @@
 
 from . import generate_mask
 from . import apply_blur
+from . import clear_cache
 
 
 def register():
     generate_mask.register()
     apply_blur.register()
+    clear_cache.register()
 
 
 def unregister():
+    clear_cache.unregister()
     apply_blur.unregister()
     generate_mask.unregister()
diff --git a/operators/clear_cache.py b/operators/clear_cache.py
new file mode 100644
index 0000000..ed00b83
--- /dev/null
+++ b/operators/clear_cache.py
@@ -0,0 +1,126 @@
+"""
+Clear Cache Operator.
+
+Provides operators to clear mask cache directories.
+"""
+
+import os
+import shutil
+import bpy
+from bpy.types import Operator
+from bpy.props import BoolProperty
+
+
+class SEQUENCER_OT_clear_mask_cache(Operator):
+    """Clear mask cache directories."""
+
+    bl_idname = "sequencer.clear_mask_cache"
+    bl_label = "Clear Mask Cache"
+    bl_description = "Delete cached mask images"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    all_strips: BoolProperty(
+        name="All Strips",
+        description="Clear cache for all strips (otherwise only current strip)",
+        default=False,
+    )
+
+    def execute(self, context):
+        import tempfile
+
+        blend_file = bpy.data.filepath
+        total_size = 0
+        cleared_count = 0
+
+        if self.all_strips:
+            # Clear all cache directories
+            if blend_file:
+                # Project cache
+                project_dir = os.path.dirname(blend_file)
+                cache_root = os.path.join(project_dir, ".mask_cache")
+            else:
+                # Temp cache
+                cache_root = os.path.join(tempfile.gettempdir(), "blender_mask_cache")
+
+            if os.path.exists(cache_root):
+                # Calculate size before deletion
+                for root, dirs, files in os.walk(cache_root):
+                    for file in files:
+                        file_path = os.path.join(root, file)
+                        try:
+                            total_size += os.path.getsize(file_path)
+                        except OSError:
+                            pass
+
+                # Delete cache directory
+                try:
+                    shutil.rmtree(cache_root)
+                    cleared_count = len(os.listdir(cache_root)) if os.path.exists(cache_root) else 0
+                    self.report({'INFO'}, f"Cleared all cache ({self._format_size(total_size)})")
+                except Exception as e:
+                    self.report({'ERROR'}, f"Failed to clear cache: {e}")
+                    return {'CANCELLED'}
+            else:
+                self.report({'INFO'}, "No cache to clear")
+                return {'FINISHED'}
+
+        else:
+            # Clear cache for active strip only
+            seq_editor = context.scene.sequence_editor
+            if not seq_editor or not seq_editor.active_strip:
+                self.report({'WARNING'}, "No strip selected")
+                return {'CANCELLED'}
+
+            strip = seq_editor.active_strip
+            if blend_file:
+                project_dir = os.path.dirname(blend_file)
+                cache_dir = os.path.join(project_dir, ".mask_cache", strip.name)
+            else:
+                cache_dir = os.path.join(tempfile.gettempdir(), "blender_mask_cache", strip.name)
+
+            if os.path.exists(cache_dir):
+                # Calculate size
+                for root, dirs, files in os.walk(cache_dir):
+                    for file in files:
+                        file_path = os.path.join(root, file)
+                        try:
+                            total_size += os.path.getsize(file_path)
+                        except OSError:
+                            pass
+
+                # Delete
+                try:
+                    shutil.rmtree(cache_dir)
+                    self.report({'INFO'}, f"Cleared cache for {strip.name} ({self._format_size(total_size)})")
+                except Exception as e:
+                    self.report({'ERROR'}, f"Failed to clear cache: {e}")
+                    return {'CANCELLED'}
+            else:
+                self.report({'INFO'}, f"No cache for {strip.name}")
+                return {'FINISHED'}
+
+        return {'FINISHED'}
+
+    def _format_size(self, size_bytes):
+        """Format bytes to human-readable size."""
+        for unit in ['B', 'KB', 'MB', 'GB']:
+            if size_bytes < 1024.0:
+                return f"{size_bytes:.1f} {unit}"
+            size_bytes /= 1024.0
+        return f"{size_bytes:.1f} TB"
+
+
+# Registration
+classes = [
+    SEQUENCER_OT_clear_mask_cache,
+]
+
+
+def register():
+    for cls in classes:
+        bpy.utils.register_class(cls)
+
+
+def unregister():
+    for cls in reversed(classes):
+        bpy.utils.unregister_class(cls)
diff --git a/operators/generate_mask.py b/operators/generate_mask.py
index 8a926fb..ec868fc 100644
--- a/operators/generate_mask.py
+++ b/operators/generate_mask.py
@@ -7,7 +7,7 @@ from video strips in the Video Sequence Editor.
 
 import os
 import bpy
-from bpy.props import FloatProperty, IntProperty
+from bpy.props import IntProperty
 from bpy.types import Operator
 
 from ..core.async_generator import get_generator
@@ -15,37 +15,12 @@ from ..core.async_generator import get_generator
 
 class SEQUENCER_OT_generate_face_mask(Operator):
     """Generate face mask image sequence from video strip."""
-    
+
     bl_idname = "sequencer.generate_face_mask"
     bl_label = "Generate Face Mask"
     bl_description = "Detect faces and generate mask image sequence"
     bl_options = {'REGISTER', 'UNDO'}
     
-    # YOLO Detection parameters
-    conf_threshold: FloatProperty(
-        name="Confidence",
-        description="YOLO confidence threshold (higher = fewer false positives)",
-        default=0.25,
-        min=0.1,
-        max=1.0,
-    )
-    
-    iou_threshold: FloatProperty(
-        name="IOU Threshold",
-        description="Non-maximum suppression IOU threshold",
-        default=0.45,
-        min=0.1,
-        max=1.0,
-    )
-    
-    mask_scale: FloatProperty(
-        name="Mask Scale",
-        description="Scale factor for mask region (1.0 = exact face size)",
-        default=1.5,
-        min=1.0,
-        max=3.0,
-    )
-    
     @classmethod
     def poll(cls, context):
         """Check if operator can run."""
@@ -126,6 +101,11 @@ class SEQUENCER_OT_generate_face_mask(Operator):
         wm.mask_progress = 0
         wm.mask_total = end_frame - start_frame + 1
         
+        # Get parameters from scene properties
+        conf_threshold = scene.facemask_conf_threshold
+        iou_threshold = scene.facemask_iou_threshold
+        mask_scale = scene.facemask_mask_scale
+
         # Start generation
         generator.start(
             video_path=video_path,
@@ -133,9 +113,9 @@ class SEQUENCER_OT_generate_face_mask(Operator):
             start_frame=0,  # Frame indices in video
             end_frame=end_frame - start_frame,
             fps=fps,
-            conf_threshold=self.conf_threshold,
-            iou_threshold=self.iou_threshold,
-            mask_scale=self.mask_scale,
+            conf_threshold=conf_threshold,
+            iou_threshold=iou_threshold,
+            mask_scale=mask_scale,
             on_complete=on_complete,
             on_progress=on_progress,
         )
diff --git a/panels/vse_panel.py b/panels/vse_panel.py
index c2e1d6f..678354b 100644
--- a/panels/vse_panel.py
+++ b/panels/vse_panel.py
@@ -9,6 +9,7 @@ import bpy
 from bpy.types import Panel
 
 from ..core.async_generator import get_generator
+from ..core.utils import get_server_status, get_cache_info, format_size
 
 
 class SEQUENCER_PT_face_mask(Panel):
@@ -22,21 +23,29 @@ class SEQUENCER_PT_face_mask(Panel):
     
     def draw(self, context):
         layout = self.layout
+        scene = context.scene
         wm = context.window_manager
         seq_editor = context.scene.sequence_editor
         # Note: Blender 5.0 uses 'strips' instead of 'sequences'
-        
+
         generator = get_generator()
-        
+
+        # Always show parameters and status
+        self._draw_parameters(layout, scene)
+        self._draw_server_status(layout)
+        self._draw_cache_info(layout, seq_editor)
+
+        layout.separator()
+
         # Show progress if generating
         if generator.is_running:
             self._draw_progress(layout, wm, generator)
             return
-        
+
         # Show controls if strip selected
         if seq_editor and seq_editor.active_strip:
             strip = seq_editor.active_strip
-            
+
             if strip.type in {'MOVIE', 'IMAGE'}:
                 self._draw_generation_controls(layout, context, strip)
                 self._draw_blur_controls(layout, context, strip)
@@ -45,18 +54,96 @@ class SEQUENCER_PT_face_mask(Panel):
         else:
             layout.label(text="No strip selected")
     
+    def _draw_parameters(self, layout, scene):
+        """Draw detection parameters."""
+        box = layout.box()
+        box.label(text="Parameters", icon='PREFERENCES')
+
+        col = box.column(align=True)
+        col.prop(scene, "facemask_conf_threshold")
+        col.prop(scene, "facemask_iou_threshold")
+        col.prop(scene, "facemask_mask_scale")
+
+    def _draw_server_status(self, layout):
+        """Draw server status and GPU info."""
+        box = layout.box()
+        box.label(text="Server Status", icon='SYSTEM')
+
+        status = get_server_status()
+
+        # Server status
+        row = box.row()
+        if status['running']:
+            row.label(text="Server:", icon='CHECKMARK')
+            row.label(text="Running")
+        else:
+            row.label(text="Server:", icon='ERROR')
+            row.label(text="Stopped")
+
+        # GPU status
+        if status['running']:
+            row = box.row()
+            if status['gpu_available']:
+                row.label(text="GPU:", icon='CHECKMARK')
+                gpu_name = status['gpu_device'] or "Available"
+                # Truncate long GPU names
+                if len(gpu_name) > 25:
+                    gpu_name = gpu_name[:22] + "..."
+                row.label(text=gpu_name)
+            else:
+                row.label(text="GPU:", icon='ERROR')
+                row.label(text="Not Available")
+
+    def _draw_cache_info(self, layout, seq_editor):
+        """Draw cache information and clear button."""
+        box = layout.box()
+        box.label(text="Cache", icon='FILE_CACHE')
+
+        # Get cache info
+        if seq_editor and seq_editor.active_strip:
+            strip_name = seq_editor.active_strip.name
+            cache_path, total_size, file_count = get_cache_info(strip_name)
+        else:
+            cache_path, total_size, file_count = get_cache_info()
+
+        # Cache info
+        row = box.row()
+        row.label(text="Size:")
+        row.label(text=format_size(total_size))
+
+        row = box.row()
+        row.label(text="Files:")
+        row.label(text=str(file_count))
+
+        # Clear cache buttons
+        row = box.row(align=True)
+        if seq_editor and seq_editor.active_strip:
+            op = row.operator(
+                "sequencer.clear_mask_cache",
+                text="Clear Strip Cache",
+                icon='TRASH',
+            )
+            op.all_strips = False
+
+        op = row.operator(
+            "sequencer.clear_mask_cache",
+            text="Clear All",
+            icon='TRASH',
+        )
+        op.all_strips = True
+
     def _draw_progress(self, layout, wm, generator):
         """Draw progress bar during generation."""
         box = layout.box()
         box.label(text="Generating Masks...", icon='RENDER_ANIMATION')
-        
+
         # Progress bar
         progress = wm.mask_progress / max(wm.mask_total, 1)
         box.progress(
             factor=progress,
             text=f"Frame {wm.mask_progress} / {wm.mask_total}",
         )
-        
+
         # Cancel button
         box.operator(
             "sequencer.cancel_mask_generation",