diff --git a/api/schemas/video.py b/api/schemas/video.py
index 39ad8e3..1b1759b 100644
--- a/api/schemas/video.py
+++ b/api/schemas/video.py
@@ -32,13 +32,13 @@ class VideoGenerateRequest(BaseModel):
     max_image_prompt_words: int = Field(60, ge=10, le=200, description="Max image prompt words")
     
     # === Image Parameters ===
-    image_width: int = Field(1024, ge=512, le=2048, description="Image width")
-    image_height: int = Field(1024, ge=512, le=2048, description="Image height")
+    image_width: int = Field(1024, description="Image width")
+    image_height: int = Field(1024, description="Image height")
     image_workflow: Optional[str] = Field(None, description="Custom image workflow")
     
     # === Video Parameters ===
-    video_width: int = Field(1080, ge=512, le=3840, description="Video width")
-    video_height: int = Field(1920, ge=512, le=3840, description="Video height")
+    video_width: int = Field(1080, description="Video width")
+    video_height: int = Field(1920, description="Video height")
     video_fps: int = Field(30, ge=15, le=60, description="Video FPS")
     
     # === Frame Template ===
diff --git a/pixelle_video/services/frame_html.py b/pixelle_video/services/frame_html.py
index 3055424..b35e173 100644
--- a/pixelle_video/services/frame_html.py
+++ b/pixelle_video/services/frame_html.py
@@ -274,8 +274,7 @@ class HTMLFrameGenerator:
         try:
             self.hti.screenshot(
                 html_str=html,
-                save_as=output_filename,
-                size=(width, height)
+                save_as=output_filename
             )
             
             # html2image saves to current directory by default, move to target directory