diff --git a/DrissionPage/__init__.py b/DrissionPage/__init__.py
index 02f54a4..d1679b2 100644
--- a/DrissionPage/__init__.py
+++ b/DrissionPage/__init__.py
@@ -3,8 +3,9 @@
 @Author   : g1879
 @Contact  : g1879@qq.com
 @Copyright: (c) 2020 by g1879, Inc. All Rights Reserved.
-本项目允许个人以源代码形式使用，仅限于学习和合法非盈利使用。
-如未获得版权持有人授权，不得用于商业行为。
+
+允许任何人以个人身份使用或分发本项目源代码，但仅限于学习和合法非盈利目的。
+个人或组织如未获得版权持有人授权，不得将本项目以源代码或二进制形式用于商业行为。
 
 使用本项目需满足以下条款，如使用过程中出现违反任意一项条款的情形，授权自动失效。
 * 禁止将DrissionPage应用到任何可能违反当地法律规定和道德约束的项目中
diff --git a/DrissionPage/_elements/chromium_element.py b/DrissionPage/_elements/chromium_element.py
index 91a0e7d..df085d6 100644
--- a/DrissionPage/_elements/chromium_element.py
+++ b/DrissionPage/_elements/chromium_element.py
@@ -1252,7 +1252,13 @@ def parse_js_result(page, ele, result, end_time):
             r = page._run_cdp('Runtime.getProperties', objectId=result['objectId'], ownProperties=True)['result']
             return [parse_js_result(page, ele, result=i['value'], end_time=end_time) for i in r if i['name'].isdigit()]
 
-        elif 'objectId' in result:
+        elif result.get('className') == 'Blob':
+            data = page._run_cdp('IO.read',
+                                 handle=f"blob:{page._run_cdp('IO.resolveBlob', objectId=result['objectId'])['uuid']}")[
+                'data']
+            return data
+
+        elif 'objectId' in result and result.get('className') == 'Blob':
             timeout = end_time - perf_counter()
             if timeout < 0:
                 return
diff --git a/DrissionPage/_functions/cookies.py b/DrissionPage/_functions/cookies.py
index 7044b78..e0d8d3e 100644
--- a/DrissionPage/_functions/cookies.py
+++ b/DrissionPage/_functions/cookies.py
@@ -181,10 +181,8 @@ def format_cookie(cookie):
 
     if 'sameSite' in cookie:
         sameSite = cookie['sameSite']
-        if sameSite in (None, False):
+        if sameSite in (None, False) or sameSite not in ('None', 'Lax', 'Strict', 'no_restriction'):
             cookie.pop('sameSite')
-        elif sameSite not in ('None', 'Lax', 'Strict'):
-            raise ValueError(f'{cookie}\nsameSite字段必须为"None"、"Lax"、"Strict"之一。')
 
     if 'priority' in cookie:
         priority = cookie['priority']
diff --git a/DrissionPage/_units/screencast.py b/DrissionPage/_units/screencast.py
index 33d8033..9e930fd 100644
--- a/DrissionPage/_units/screencast.py
+++ b/DrissionPage/_units/screencast.py
@@ -57,7 +57,7 @@ class Screencast(object):
                                ? "video/webm; codecs=vp9"
                                : "video/webm"
                 mediaRecorder = new MediaRecorder(stream, {mimeType: mime})
-                DrissionPage_Screencast_chunks = []
+                DrissionPage_Screencast_chunks = [];
                 mediaRecorder.addEventListener('dataavailable', function(e) {
                     DrissionPage_Screencast_blob_ok = false;
                     DrissionPage_Screencast_chunks.push(e.data);
@@ -75,6 +75,7 @@ class Screencast(object):
             print('请手动选择要录制的目标。')
             self._owner._run_js('var DrissionPage_Screencast_blob;var DrissionPage_Screencast_blob_ok=false;')
             self._owner._run_js(js)
+        print('开始录制')
 
     def stop(self, video_name=None):
         if video_name and not video_name.endswith('mp4'):
@@ -86,11 +87,12 @@ class Screencast(object):
             self._owner._run_js('mediaRecorder.stop();', as_expr=True)
             while not self._owner._run_js('return DrissionPage_Screencast_blob_ok;'):
                 sleep(.05)
-            blob = self._owner._run_js('return DrissionPage_Screencast_blob;')
-            uuid = self._owner._run_cdp('IO.resolveBlob', objectId=blob['result']['objectId'])['uuid']
-            data = self._owner._run_cdp('IO.read', handle=f'blob:{uuid}')['data']
             with open(path, 'wb') as f:
-                f.write(b64decode(data))
+                f.write(b64decode(self._owner._run_js('return DrissionPage_Screencast_blob;')))
+            self._owner._run_js('DrissionPage_Screencast_blob_ok = false;'
+                                'DrissionPage_Screencast_chunks = [];'
+                                'DrissionPage_Screencast_blob = null', as_expr=True)
+            print('停止录制')
             return path
 
         if self._mode.startswith('frugal'):
@@ -102,6 +104,7 @@ class Screencast(object):
                 sleep(.01)
 
         if self._mode.endswith('imgs'):
+            print('停止录制')
             return str(Path(self._path).absolute())
 
         if not str(self._path).isascii():
@@ -126,6 +129,7 @@ class Screencast(object):
 
         rmtree(self._tmp_path)
         self._tmp_path = None
+        print('停止录制')
         return f'{self._path}{sep}{name}'
 
     def set_save_path(self, save_path=None):
diff --git a/setup.py b/setup.py
index f1c9baf..61bf28b 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ setup(
     description="Python based web automation tool. It can control the browser and send and receive data packets.",
     long_description=long_description,
     long_description_content_type="text/markdown",
-    license="BSD",
+    # license="BSD",
     keywords="DrissionPage",
     url="https://DrissionPage.cn",
     include_package_data=True,
@@ -33,7 +33,7 @@ setup(
         "Programming Language :: Python :: 3.6",
         "Development Status :: 4 - Beta",
         "Topic :: Utilities",
-        "License :: OSI Approved :: BSD License",
+        # "License :: OSI Approved :: BSD License",
     ],
     python_requires='>=3.6',
     entry_points={