diff --git a/packages/griffith-mp4/src/fetch.js b/packages/griffith-mp4/src/fetch.js
index 69d3968b..aa640016 100644
--- a/packages/griffith-mp4/src/fetch.js
+++ b/packages/griffith-mp4/src/fetch.js
@@ -10,8 +10,6 @@ export default class FragmentFetch {
     xhr.open('get', url)
     xhr.responseType = 'arraybuffer'
     xhr.setRequestHeader('Range', `bytes=${start}-${end}`)
-    xhr.setRequestHeader('Access-Control-Allow-Methods', 'GET, OPTIONS')
-    xhr.setRequestHeader('Access-Control-Allow-Origin', '*')
     xhr.onload = () => {
       if (xhr.status === 200 || xhr.status === 206) {
         callback(xhr.response)
diff --git a/packages/griffith-standalone/README-zh-Hans.md b/packages/griffith-standalone/README-zh-Hans.md
index 79dce16d..fe43024d 100644
--- a/packages/griffith-standalone/README-zh-Hans.md
+++ b/packages/griffith-standalone/README-zh-Hans.md
@@ -6,18 +6,24 @@
 
 ```html
 <div id="player"></div>
-<script
-  crossorigin
-  src="https://unpkg.com/griffith-standalone/dist/index.umd.min.js"
-></script>
+<script src="https://unpkg.com/griffith-standalone/dist/index.umd.min.js"></script>
 <script>
   const target = document.getElementById('player')
 
+  const sources = {
+    hd: {
+      play_url: 'https://zhstatic.zhihu.com/cfe/griffith/zhihu2018_hd.mp4',
+    },
+    sd: {
+      play_url: 'https://zhstatic.zhihu.com/cfe/griffith/zhihu2018_sd.mp4',
+    },
+  }
+
   // 创建播放器
-  const player = Griffith.createPlayer(element)
+  const player = Griffith.createPlayer(target)
 
   // 载入视频
-  player.render(props)
+  player.render({sources})
 
   // 销毁视频
   player.dispose()
diff --git a/packages/griffith-standalone/README.md b/packages/griffith-standalone/README.md
index f981aa7e..3e314610 100644
--- a/packages/griffith-standalone/README.md
+++ b/packages/griffith-standalone/README.md
@@ -13,11 +13,20 @@ Griffith bundled with React, React DOM and other dependencies. You can use it by
 <script>
   const target = document.getElementById('player')
 
+  const sources = {
+    hd: {
+      play_url: 'https://zhstatic.zhihu.com/cfe/griffith/zhihu2018_hd.mp4',
+    },
+    sd: {
+      play_url: 'https://zhstatic.zhihu.com/cfe/griffith/zhihu2018_sd.mp4',
+    },
+  }
+
   // create player instance
-  const player = Griffith.createPlayer(element)
+  const player = Griffith.createPlayer(target)
 
   // load video
-  player.render(props)
+  player.render({sources})
 
   // dispose video
   player.dispose()