diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 9ab0ff4f4..0cfd30b9b 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -8,7 +8,8 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
-* v4.0, 2022-01-20, Merge [#2863](https://github.com/ossrs/srs/pull/2863): RTC: fix play crash or no stream for rtmp2rtc tips.(#2863). v4.0.220
+* v4.0, 2022-01-12, Refine the running homepage. v4.0.221
+* v4.0, 2022-01-12, Merge [#2863](https://github.com/ossrs/srs/pull/2863): RTC: fix play crash or no stream for rtmp2rtc tips.(#2863). v4.0.220
 * v4.0, 2022-01-05, For [#2717](https://github.com/ossrs/srs/issues/2717): When reopening segment, never update the duration. (#2717). v4.0.219
 * v4.0, 2022-01-04, Discover api server and ip as candidates. v4.0.218
 * v4.0, 2022-01-04, Install test-on self-sign certificate. v4.0.217
diff --git a/trunk/research/api-server/static-dir/index.html b/trunk/research/api-server/static-dir/index.html
index e73a6e75b..d155e15bf 100755
--- a/trunk/research/api-server/static-dir/index.html
+++ b/trunk/research/api-server/static-dir/index.html
@@ -3,24 +3,55 @@
 <head>
     <title>SRS</title>
     <meta charset="utf-8">
+    <style>
+        .span6 {
+            width: 480px;
+        }
+        .code {
+            background-color: rgb(246 248 250);
+            padding: 8px;
+            overflow: auto;
+            font-size: 85%;
+            line-height: 1.45;
+            border-radius: 6px;
+            word-break: normal;
+            word-wrap: normal;
+            box-sizing: border-box;
+            display: block;
+            white-space: pre;
+        }
+    </style>
 </head>
 <body>
-<h3><a href="https://github.com/ossrs/srs">SRS</a> works!</h3>
-<p>
-    Click <a id="en" href="#">here</a> to enter SRS console.<br/>
-    点击进入<a id="cn" href="#">SRS控制台</a>
-</p>
-<p>
-    Click <a href="players/?autostart=true">here</a> to start SRS player.<br/>
-    点击进入<a href="players/?autostart=true">SRS播放器</a>
-</p>
-<p><a href="https://github.com/ossrs/srs">SRS Team &copy; 2021</a></p>
-<script type="text/javascript">
-    // http://localhost:8080/console/ng_index.html#/connect?port=1985
-    // http://localhost:8080/console/ng_index.html#/summaries?port=1985
-    var en_url = window.location.protocol + "//" + window.location.host + "/console/en_index.html#/summaries?port=1985";
-    var cn_url = window.location.protocol + "//" + window.location.host + "/console/ng_index.html#/summaries?port=1985";
-    document.getElementById("en").setAttribute('href', en_url);
-    document.getElementById("cn").setAttribute('href', cn_url);
-</script>
+    <div>
+        <h3><a href="https://github.com/ossrs/srs">SRS</a> works!</h3>
+        <p>
+            Click <a id="en" href="#">here</a> to enter SRS console.<br/>
+            点击进入<a id="cn" href="#">SRS控制台</a>
+        </p>
+        <p>
+            Publish stream by <a href="https://ffmpeg.org/download.html">FFmpeg</a> or <a href="https://obsproject.com/download">OBS</a>:<br/>
+            请使用工具<a href="https://ffmpeg.org/download.html">FFmpeg</a>或者<a href="https://obsproject.com/download">OBS</a>推流到下面地址:
+            <pre id="url" class="code span6"></pre>
+        </p>
+        <p>
+            Click <a href="players/?autostart=true">here</a> to start SRS player.<br/>
+            点击进入<a href="players/?autostart=true">SRS播放器</a>
+        </p>
+        <p><a href="https://github.com/ossrs/srs">SRS Team &copy; 2022</a></p>
+    </div>
+    <script type="text/javascript">
+        // Build RTMP url.
+        const rtmp_url = `rtmp://${window.location.hostname}/live/livestream`;
+        document.getElementById('url').innerText = rtmp_url;
+
+        // The prefix for default website.
+        const prefix = `${window.location.protocol}//${window.location.host}`;
+        // If not 8080, user should proxy to the default port.
+        const query = window.location.port === 8080 ? `?port=1985` : '';
+        const enUrl = `${prefix}/console/en_index.html#/summaries${query}`;
+        const cnUrl = `${prefix}/console/ng_index.html#/summaries${query}`;
+        document.getElementById("en").setAttribute('href', enUrl);
+        document.getElementById("cn").setAttribute('href', cnUrl);
+    </script>
 </body>
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index 38880bf57..3ef0133b5 100644
--- a/trunk/src/core/srs_core_version4.hpp
+++ b/trunk/src/core/srs_core_version4.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       4
 #define VERSION_MINOR       0
-#define VERSION_REVISION    220
+#define VERSION_REVISION    221
 
 #endif
