diff --git a/facefusion/apis/asset_helper.py b/facefusion/apis/asset_helper.py
index 1045d8e4..7cf68359 100644
--- a/facefusion/apis/asset_helper.py
+++ b/facefusion/apis/asset_helper.py
@@ -61,6 +61,23 @@ def validate_asset_files(upload_files : List[UploadFile]) -> bool:
 	return True
 
 
+def validate_frame_resolution(resolution : str) -> bool:
+	resolution_limit = 4096
+	frame_width, frame_height = unpack_resolution(resolution)
+
+	return frame_width < resolution_limit and frame_height < resolution_limit
+
+
+def validate_file_size(upload_files : List[UploadFile]) -> bool:
+	size_limit = 512 * 1024 * 1024
+
+	for upload_file in upload_files:
+		if upload_file.size > size_limit:
+			return False
+
+	return True
+
+
 async def save_asset_files(upload_files : List[UploadFile]) -> List[str]:
 	asset_paths : List[str] = []
 	api_security_strategy = state_manager.get_item('api_security_strategy')
diff --git a/facefusion/apis/endpoints/assets.py b/facefusion/apis/endpoints/assets.py
index 639417bd..69356241 100644
--- a/facefusion/apis/endpoints/assets.py
+++ b/facefusion/apis/endpoints/assets.py
@@ -7,7 +7,7 @@ from starlette.status import HTTP_200_OK, HTTP_201_CREATED, HTTP_400_BAD_REQUEST
 
 from facefusion import translator
 from facefusion.apis import asset_store
-from facefusion.apis.asset_helper import capture_asset_faces, capture_asset_frames, save_asset_files, validate_asset_files
+from facefusion.apis.asset_helper import capture_asset_faces, capture_asset_frames, save_asset_files, validate_asset_files, validate_frame_resolution, validate_file_size
 from facefusion.filesystem import remove_file
 from facefusion.vision import is_vision_frames, to_strip_buffer
 
@@ -47,11 +47,13 @@ async def get_asset(request : Request) -> Response:
 			frame_indexes = request.query_params.getlist('frame_index')
 			vision_frames = []
 
-			if request.query_params.get('subject') == 'frame':
-				vision_frames = capture_asset_frames(asset, frame_indexes, resolution) #type:ignore[arg-type]
+			if validate_frame_resolution(resolution):
 
-			if request.query_params.get('subject') == 'face':
-				vision_frames = capture_asset_faces(asset, frame_indexes, resolution) #type:ignore[arg-type]
+				if request.query_params.get('subject') == 'frame':
+					vision_frames = capture_asset_frames(asset, frame_indexes, resolution) #type:ignore[arg-type]
+
+				if request.query_params.get('subject') == 'face':
+					vision_frames = capture_asset_faces(asset, frame_indexes, resolution) #type:ignore[arg-type]
 
 			if is_vision_frames(vision_frames):
 				return Response(content = to_strip_buffer(vision_frames), media_type = 'image/jpeg')
@@ -90,7 +92,7 @@ async def upload_assets(request : Request) -> Response:
 		form = await request.form()
 		upload_files = form.getlist('file')
 
-		if upload_files and validate_asset_files(upload_files):
+		if upload_files and validate_file_size(upload_files) and validate_asset_files(upload_files):
 			asset_paths = await save_asset_files(upload_files)
 
 			if asset_paths: