diff --git a/entity/ffmpeg.py b/entity/ffmpeg.py
index 192f6dd..a3b5326 100644
--- a/entity/ffmpeg.py
+++ b/entity/ffmpeg.py
@@ -185,22 +185,36 @@ class FfmpegTask(object):
                 if effect.startswith("cameraShot:"):
                     param = effect.split(":", 2)[1]
                     if param == '':
-                        param = "3,1"
+                        param = "3,1,0"
                     _split = param.split(",")
                     start = 3
                     duration = 1
+                    rotate_deg = 0
+                    if len(_split) >= 3:
+                        if _split[2] == '':
+                            rotate_deg = 0
+                        else:
+                            rotate_deg = int(_split[2])
                     if len(_split) >= 2:
-                        start = int(_split[0])
-                        duration = int(_split[1])
-                    elif len(_split) == 1:
-                        start = int(_split[0])
+                        duration = float(_split[1])
+                    if len(_split) >= 1:
+                        start = float(_split[0])
                     _start_out_str = "[eff_s]"
+                    _mid_out_str = "[eff_m]"
                     _end_out_str = "[eff_e]"
-                    filter_args.append(f"{video_output_str}fps=fps={self.frame_rate},split{_start_out_str}{_end_out_str}")
-                    filter_args.append(f"{_start_out_str}trim=start={0}:end={start+duration},freezeframes=first={start*self.frame_rate}:replace={start*self.frame_rate}{_start_out_str}")
-                    filter_args.append(f"{_end_out_str}trim=start={start}{_end_out_str}")
+                    filter_args.append(f"{video_output_str}split=3{_start_out_str}{_mid_out_str}{_end_out_str}")
+                    filter_args.append(f"{video_output_str}[0:v]select=lt(n\,{int(start*self.frame_rate)}){_start_out_str}")
+                    filter_args.append(f"{video_output_str}[0:v]select=gt(n\,{int(start*self.frame_rate)}){_end_out_str}")
+                    filter_args.append(f"{video_output_str}[0:v]select=eq(n\,{int(start*self.frame_rate)}){_mid_out_str}")
+                    filter_args.append(f"{_mid_out_str}tpad=start_mode=clone:start_duration={duration:.4f}{_mid_out_str}")
+                    if rotate_deg != 0:
+                        filter_args.append(f"{_mid_out_str}rotate=PI*{rotate_deg}/360{_mid_out_str}")
+                    # filter_args.append(f"{video_output_str}trim=start=0:end={start+duration},tpad=stop_mode=clone:stop_duration={duration},setpts=PTS-STARTPTS{_start_out_str}")
+                    # filter_args.append(f"tpad=start_mode=clone:start_duration={duration},setpts=PTS-STARTPTS{_start_out_str}")
+                    # filter_args.append(f"{_end_out_str}trim=start={start}{_end_out_str}")
                     video_output_str = "[v_eff]"
-                    filter_args.append(f"{_start_out_str}{_end_out_str}concat=n=2:v=1:a=0{video_output_str}")
+                    # filter_args.append(f"{_end_out_str}{_start_out_str}overlay=eof_action=pass{video_output_str}")
+                    filter_args.append(f"{_start_out_str}{_mid_out_str}{_end_out_str}concat=n=3:v=1:a=0,setpts=N/{self.frame_rate}/TB{video_output_str}")
                 elif effect.startswith("zoom:"):
                     ...
                 ...