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diff --git a/inference.py b/inference.py
index 8387e7f..2edfea4 100644
--- a/inference.py
+++ b/inference.py
@@ -1,33 +1,182 @@
-# coding: utf-8
-
 import tyro
 from src.config.argument_config import ArgumentConfig
 from src.config.inference_config import InferenceConfig
 from src.config.crop_config import CropConfig
 from src.live_portrait_pipeline import LivePortraitPipeline
 
+import cv2
+import time
+import numpy as np
 
 def partial_fields(target_class, kwargs):
     return target_class(**{k: v for k, v in kwargs.items() if hasattr(target_class, k)})
 
-
 def main():
     # set tyro theme
     tyro.extras.set_accent_color("bright_cyan")
     args = tyro.cli(ArgumentConfig)
 
     # specify configs for inference
-    inference_cfg = partial_fields(InferenceConfig, args.__dict__)  # use attribute of args to initial InferenceConfig
-    crop_cfg = partial_fields(CropConfig, args.__dict__)  # use attribute of args to initial CropConfig
+    inference_cfg = partial_fields(InferenceConfig, args.__dict__)
+    crop_cfg = partial_fields(CropConfig, args.__dict__)
 
     live_portrait_pipeline = LivePortraitPipeline(
         inference_cfg=inference_cfg,
         crop_cfg=crop_cfg
     )
 
-    # run
-    live_portrait_pipeline.execute(args)
+    # Initialize webcam 'assets/examples/driving/d6.mp4'
+    cap = cv2.VideoCapture(0)
+
+    # Process the first frame to initialize
+    ret, frame = cap.read()
+    if not ret:
+        print("Failed to capture image")
+        return
+
+    source_image_path = args.source_image  # Set the source image path here
+    x_s, f_s, R_s, x_s_info, lip_delta_before_animation, crop_info, img_rgb = live_portrait_pipeline.execute_frame(frame, source_image_path)
+
+    while True:
+        # Capture frame-by-frame
+        ret, frame = cap.read()
+
+        if not ret:
+            break
+
+        # Process the frame
+        
+        result = live_portrait_pipeline.generate_frame(x_s, f_s, R_s, x_s_info, lip_delta_before_animation, crop_info, img_rgb, frame)
+        cv2.imshow('img_rgb Image', img_rgb)
+        cv2.imshow('Source Frame', frame)
+        
+
+        # [Key Change] Convert the result from RGB to BGR before displaying
+        result_bgr = cv2.cvtColor(result, cv2.COLOR_RGB2BGR)
+
+
+        # Display the resulting frame
+        cv2.imshow('Live Portrait', result_bgr)
+
+        # Press 'q' to exit the loop
+        if cv2.waitKey(1) & 0xFF == ord('q'):
+            break
+
+    # When everything is done, release the capture
+    cap.release()
+    cv2.destroyAllWindows()
+    
+    # live_portrait_pipeline.execute_frame(result_bgr)
 
 
 if __name__ == '__main__':
+    st = time.time()
     main()
+    print("Generation time:", (time.time() - st) * 1000)
+
+# 3. Reduced webcam latency 350 to 160
+
+# import cv2
+# import time
+# import threading
+# import numpy as np
+# import tyro
+# from src.config.argument_config import ArgumentConfig
+# from src.config.inference_config import InferenceConfig
+# from src.config.crop_config import CropConfig
+# from src.live_portrait_pipeline import LivePortraitPipeline
+
+# def partial_fields(target_class, kwargs):
+#     return target_class(**{k: v for k, v in kwargs.items() if hasattr(target_class, k)})
+
+# class VideoCaptureThread:
+#     def __init__(self, src=0):
+#         self.cap = cv2.VideoCapture(src)
+#         self.cap.set(cv2.CAP_PROP_FRAME_WIDTH, 480)
+#         self.cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
+#         self.cap.set(cv2.CAP_PROP_FPS, 60)
+        
+#         if not self.cap.isOpened():
+#             print("Failed to open camera")
+#             self.running = False
+#         else:
+#             self.ret = False
+#             self.frame = None
+#             self.running = True
+#             self.thread = threading.Thread(target=self.update, args=())
+#             self.thread.start()
+    
+#     def update(self):
+#         while self.running:
+#             self.ret, self.frame = self.cap.read()
+#             if not self.ret:
+#                 print("Failed to read frame")
+#                 break
+    
+#     def read(self):
+#         return self.ret, self.frame
+    
+#     def release(self):
+#         self.running = False
+#         self.thread.join()
+#         self.cap.release()
+
+# def main():
+#     # Set tyro theme
+#     tyro.extras.set_accent_color("bright_cyan")
+#     args = tyro.cli(ArgumentConfig)
+
+#     # Specify configs for inference
+#     inference_cfg = partial_fields(InferenceConfig, args.__dict__)
+#     crop_cfg = partial_fields(CropConfig, args.__dict__)
+
+#     live_portrait_pipeline = LivePortraitPipeline(
+#         inference_cfg=inference_cfg,
+#         crop_cfg=crop_cfg
+#     )
+
+#     # Initialize webcam 'assets/examples/driving/d6.mp4'
+#     cap_thread = VideoCaptureThread(0)
+
+#     # Wait for the first frame to be captured
+#     while not cap_thread.ret and cap_thread.running:
+#         time.sleep(0.1)
+
+#     if not cap_thread.ret:
+#         print("Failed to capture image")
+#         cap_thread.release()
+#         return
+
+#     source_image_path = args.source_image  # Set the source image path here
+#     ret, frame = cap_thread.read()
+#     x_s, f_s, R_s, x_s_info, lip_delta_before_animation, crop_info, img_rgb = live_portrait_pipeline.execute_frame(frame, source_image_path)
+
+#     while cap_thread.running:
+#         # Capture frame-by-frame
+#         ret, frame = cap_thread.read()
+#         if not ret:
+#             break
+
+#         # Process the frame
+#         result = live_portrait_pipeline.generate_frame(x_s, f_s, R_s, x_s_info, lip_delta_before_animation, crop_info, img_rgb, frame)
+#         # cv2.imshow('img_rgb Image', img_rgb)
+#         cv2.imshow('Webcam Frame', frame)
+        
+#         # Convert the result from RGB to BGR before displaying
+#         result_bgr = cv2.cvtColor(result, cv2.COLOR_RGB2BGR)
+        
+#         # Display the resulting frame
+#         cv2.imshow('Webcam Live Portrait', result_bgr)
+
+#         # Press 'q' to exit the loop
+#         if cv2.waitKey(1) & 0xFF == ord('q'):
+#             break
+
+#     # When everything is done, release the capture
+#     cap_thread.release()
+#     cv2.destroyAllWindows()
+
+# if __name__ == '__main__':
+#     st = time.time()
+#     main()
+#     print("Generation time:", (time.time() - st) * 1000)
diff --git a/src/live_portrait_pipeline.py b/src/live_portrait_pipeline.py
index 7fda1f5..b777ed4 100644
--- a/src/live_portrait_pipeline.py
+++ b/src/live_portrait_pipeline.py
@@ -1,13 +1,7 @@
-# coding: utf-8
-
 """
 Pipeline of LivePortrait
 """
 
-# TODO:
-# 1. 当前假定所有的模板都是已经裁好的，需要修改下
-# 2. pick样例图 source + driving
-
 import cv2
 import numpy as np
 import pickle
@@ -38,153 +32,67 @@ class LivePortraitPipeline(object):
         self.live_portrait_wrapper: LivePortraitWrapper = LivePortraitWrapper(cfg=inference_cfg)
         self.cropper = Cropper(crop_cfg=crop_cfg)
 
-    def execute(self, args: ArgumentConfig):
-        inference_cfg = self.live_portrait_wrapper.cfg # for convenience
-        ######## process source portrait ########
-        img_rgb = load_image_rgb(args.source_image)
+    def execute_frame(self, frame, source_image_path):
+        inference_cfg = self.live_portrait_wrapper.cfg  # for convenience
+
+        # Load and preprocess source image
+        img_rgb = load_image_rgb(source_image_path)
         img_rgb = resize_to_limit(img_rgb, inference_cfg.ref_max_shape, inference_cfg.ref_shape_n)
-        log(f"Load source image from {args.source_image}")
+        log(f"Load source image from {source_image_path}")
         crop_info = self.cropper.crop_single_image(img_rgb)
         source_lmk = crop_info['lmk_crop']
         img_crop, img_crop_256x256 = crop_info['img_crop'], crop_info['img_crop_256x256']
+
         if inference_cfg.flag_do_crop:
             I_s = self.live_portrait_wrapper.prepare_source(img_crop_256x256)
         else:
             I_s = self.live_portrait_wrapper.prepare_source(img_rgb)
+        
         x_s_info = self.live_portrait_wrapper.get_kp_info(I_s)
         x_c_s = x_s_info['kp']
         R_s = get_rotation_matrix(x_s_info['pitch'], x_s_info['yaw'], x_s_info['roll'])
         f_s = self.live_portrait_wrapper.extract_feature_3d(I_s)
         x_s = self.live_portrait_wrapper.transform_keypoint(x_s_info)
 
+        lip_delta_before_animation = None
         if inference_cfg.flag_lip_zero:
-            # let lip-open scalar to be 0 at first
             c_d_lip_before_animation = [0.]
-            combined_lip_ratio_tensor_before_animation = self.live_portrait_wrapper.calc_combined_lip_ratio(c_d_lip_before_animation, source_lmk)
+            combined_lip_ratio_tensor_before_animation = self.live_portrait_wrapper.calc_combined_lip_ratio(c_d_lip_before_animation, crop_info['lmk_crop'])
             if combined_lip_ratio_tensor_before_animation[0][0] < inference_cfg.lip_zero_threshold:
                 inference_cfg.flag_lip_zero = False
             else:
                 lip_delta_before_animation = self.live_portrait_wrapper.retarget_lip(x_s, combined_lip_ratio_tensor_before_animation)
-        ############################################
 
-        ######## process driving info ########
-        if is_video(args.driving_info):
-            log(f"Load from video file (mp4 mov avi etc...): {args.driving_info}")
-            # TODO: 这里track一下驱动视频 -> 构建模板
-            driving_rgb_lst = load_driving_info(args.driving_info)
-            driving_rgb_lst_256 = [cv2.resize(_, (256, 256)) for _ in driving_rgb_lst]
-            I_d_lst = self.live_portrait_wrapper.prepare_driving_videos(driving_rgb_lst_256)
-            n_frames = I_d_lst.shape[0]
-            if inference_cfg.flag_eye_retargeting or inference_cfg.flag_lip_retargeting:
-                driving_lmk_lst = self.cropper.get_retargeting_lmk_info(driving_rgb_lst)
-                input_eye_ratio_lst, input_lip_ratio_lst = self.live_portrait_wrapper.calc_retargeting_ratio(source_lmk, driving_lmk_lst)
-        elif is_template(args.driving_info):
-            log(f"Load from video templates {args.driving_info}")
-            with open(args.driving_info, 'rb') as f:
-                template_lst, driving_lmk_lst = pickle.load(f)
-            n_frames = template_lst[0]['n_frames']
-            input_eye_ratio_lst, input_lip_ratio_lst = self.live_portrait_wrapper.calc_retargeting_ratio(source_lmk, driving_lmk_lst)
-        else:
-            raise Exception("Unsupported driving types!")
-        #########################################
+        return x_s, f_s, R_s, x_s_info, lip_delta_before_animation, crop_info, img_rgb
+
+    def generate_frame(self, x_s, f_s, R_s, x_s_info, lip_delta_before_animation, crop_info, img_rgb, driving_info):
+        inference_cfg = self.live_portrait_wrapper.cfg  # for convenience
+
+        # Process driving info
+        driving_rgb = cv2.resize(driving_info, (256, 256))
+        I_d_i = self.live_portrait_wrapper.prepare_driving_videos([driving_rgb])[0]
+
+
+        x_d_i_info = self.live_portrait_wrapper.get_kp_info(I_d_i)
+        R_d_i = get_rotation_matrix(x_d_i_info['pitch'], x_d_i_info['yaw'], x_d_i_info['roll'])
+
+        R_new = R_d_i @ R_s
+        delta_new = x_s_info['exp'] + (x_d_i_info['exp'] - x_s_info['exp'])
+        scale_new = x_s_info['scale'] * (x_d_i_info['scale'] / x_s_info['scale'])
+        t_new = x_s_info['t'] + (x_d_i_info['t'] - x_s_info['t'])
+        t_new[..., 2].fill_(0)  # zero tz
+
+        x_d_i_new = scale_new * (x_s @ R_new + delta_new) + t_new
+        if inference_cfg.flag_lip_zero and lip_delta_before_animation is not None:
+            x_d_i_new += lip_delta_before_animation.reshape(-1, x_s.shape[1], 3)
+
+        out = self.live_portrait_wrapper.warp_decode(f_s, x_s, x_d_i_new)
+        I_p_i = self.live_portrait_wrapper.parse_output(out['out'])[0]
 
-        ######## prepare for pasteback ########
         if inference_cfg.flag_pasteback:
             mask_ori = prepare_paste_back(inference_cfg.mask_crop, crop_info['M_c2o'], dsize=(img_rgb.shape[1], img_rgb.shape[0]))
-            I_p_paste_lst = []
-        #########################################
-
-        I_p_lst = []
-        R_d_0, x_d_0_info = None, None
-        for i in track(range(n_frames), description='Animating...', total=n_frames):
-            if is_video(args.driving_info):
-                # extract kp info by M
-                I_d_i = I_d_lst[i]
-                x_d_i_info = self.live_portrait_wrapper.get_kp_info(I_d_i)
-                R_d_i = get_rotation_matrix(x_d_i_info['pitch'], x_d_i_info['yaw'], x_d_i_info['roll'])
-            else:
-                # from template
-                x_d_i_info = template_lst[i]
-                x_d_i_info = dct2cuda(x_d_i_info, inference_cfg.device_id)
-                R_d_i = x_d_i_info['R_d']
-
-            if i == 0:
-                R_d_0 = R_d_i
-                x_d_0_info = x_d_i_info
-
-            if inference_cfg.flag_relative:
-                R_new = (R_d_i @ R_d_0.permute(0, 2, 1)) @ R_s
-                delta_new = x_s_info['exp'] + (x_d_i_info['exp'] - x_d_0_info['exp'])
-                scale_new = x_s_info['scale'] * (x_d_i_info['scale'] / x_d_0_info['scale'])
-                t_new = x_s_info['t'] + (x_d_i_info['t'] - x_d_0_info['t'])
-            else:
-                R_new = R_d_i
-                delta_new = x_d_i_info['exp']
-                scale_new = x_s_info['scale']
-                t_new = x_d_i_info['t']
-
-            t_new[..., 2].fill_(0) # zero tz
-            x_d_i_new = scale_new * (x_c_s @ R_new + delta_new) + t_new
-
-            # Algorithm 1:
-            if not inference_cfg.flag_stitching and not inference_cfg.flag_eye_retargeting and not inference_cfg.flag_lip_retargeting:
-                # without stitching or retargeting
-                if inference_cfg.flag_lip_zero:
-                    x_d_i_new += lip_delta_before_animation.reshape(-1, x_s.shape[1], 3)
-                else:
-                    pass
-            elif inference_cfg.flag_stitching and not inference_cfg.flag_eye_retargeting and not inference_cfg.flag_lip_retargeting:
-                # with stitching and without retargeting
-                if inference_cfg.flag_lip_zero:
-                    x_d_i_new = self.live_portrait_wrapper.stitching(x_s, x_d_i_new) + lip_delta_before_animation.reshape(-1, x_s.shape[1], 3)
-                else:
-                    x_d_i_new = self.live_portrait_wrapper.stitching(x_s, x_d_i_new)
-            else:
-                eyes_delta, lip_delta = None, None
-                if inference_cfg.flag_eye_retargeting:
-                    c_d_eyes_i = input_eye_ratio_lst[i]
-                    combined_eye_ratio_tensor = self.live_portrait_wrapper.calc_combined_eye_ratio(c_d_eyes_i, source_lmk)
-                    # ∆_eyes,i = R_eyes(x_s; c_s,eyes, c_d,eyes,i)
-                    eyes_delta = self.live_portrait_wrapper.retarget_eye(x_s, combined_eye_ratio_tensor)
-                if inference_cfg.flag_lip_retargeting:
-                    c_d_lip_i = input_lip_ratio_lst[i]
-                    combined_lip_ratio_tensor = self.live_portrait_wrapper.calc_combined_lip_ratio(c_d_lip_i, source_lmk)
-                    # ∆_lip,i = R_lip(x_s; c_s,lip, c_d,lip,i)
-                    lip_delta = self.live_portrait_wrapper.retarget_lip(x_s, combined_lip_ratio_tensor)
-
-                if inference_cfg.flag_relative:  # use x_s
-                    x_d_i_new = x_s + \
-                        (eyes_delta.reshape(-1, x_s.shape[1], 3) if eyes_delta is not None else 0) + \
-                        (lip_delta.reshape(-1, x_s.shape[1], 3) if lip_delta is not None else 0)
-                else:  # use x_d,i
-                    x_d_i_new = x_d_i_new + \
-                        (eyes_delta.reshape(-1, x_s.shape[1], 3) if eyes_delta is not None else 0) + \
-                        (lip_delta.reshape(-1, x_s.shape[1], 3) if lip_delta is not None else 0)
-
-                if inference_cfg.flag_stitching:
-                    x_d_i_new = self.live_portrait_wrapper.stitching(x_s, x_d_i_new)
-
-            out = self.live_portrait_wrapper.warp_decode(f_s, x_s, x_d_i_new)
-            I_p_i = self.live_portrait_wrapper.parse_output(out['out'])[0]
-            I_p_lst.append(I_p_i)
-
-            if inference_cfg.flag_pasteback:
-                I_p_i_to_ori_blend = paste_back(I_p_i, crop_info['M_c2o'], img_rgb, mask_ori)
-                I_p_paste_lst.append(I_p_i_to_ori_blend)
-
-        mkdir(args.output_dir)
-        wfp_concat = None
-        if is_video(args.driving_info):
-            frames_concatenated = concat_frames(I_p_lst, driving_rgb_lst, img_crop_256x256)
-            # save (driving frames, source image, drived frames) result
-            wfp_concat = osp.join(args.output_dir, f'{basename(args.source_image)}--{basename(args.driving_info)}_concat.mp4')
-            images2video(frames_concatenated, wfp=wfp_concat)
-
-        # save drived result
-        wfp = osp.join(args.output_dir, f'{basename(args.source_image)}--{basename(args.driving_info)}.mp4')
-        if inference_cfg.flag_pasteback:
-            images2video(I_p_paste_lst, wfp=wfp)
+            I_p_i_to_ori_blend = paste_back(I_p_i, crop_info['M_c2o'], img_rgb, mask_ori)
+            return I_p_i_to_ori_blend
         else:
-            images2video(I_p_lst, wfp=wfp)
+            return I_p_i
 
-        return wfp, wfp_concat