diff --git a/zh-cn/application-dev/media/avrecorder.md b/zh-cn/application-dev/media/avrecorder.md
index 85c5d6081b9180cd9e0fa5ba1183f4ee19ecc2b5..3cee29c0291e18d417b32fa1ec1a41871f56fd09 100644
--- a/zh-cn/application-dev/media/avrecorder.md
+++ b/zh-cn/application-dev/media/avrecorder.md
@@ -69,14 +69,14 @@ export class AVRecorderDemo {
     let surfaceID; // 从getInputSurface获取surfaceID，传递给相机的videoOutput
     await this.getFd('01.mp4');
 
-    // 音视频录制相关参数配置
+    // 音视频录制相关参数配置，配置参数以实际硬件设备支持的范围为准
     let avProfile = {
         audioBitrate : 48000,
         audioChannels : 2,
         audioCodec : media.CodecMimeType.AUDIO_AAC,
         audioSampleRate : 48000,
         fileFormat : media.ContainerFormatType.CFT_MPEG_4,
-        videoBitrate : 48000,
+        videoBitrate : 2000000,
         videoCodec : media.CodecMimeType.VIDEO_MPEG4,
         videoFrameWidth : 640,
         videoFrameHeight : 480,
@@ -365,10 +365,10 @@ export class VideoRecorderDemo {
     let surfaceID; // 从getInputSurface获取surfaceID，传递给相机的videoOutput
     await this.getFd('01.mp4');
 
-    // 纯视频录制相关参数配置
+    // 纯视频录制相关参数配置，配置参数以实际硬件设备支持的范围为准
     let videoProfile = {
         fileFormat : media.ContainerFormatType.CFT_MPEG_4,
-        videoBitrate : 48000,
+        videoBitrate : 2000000,
         videoCodec : media.CodecMimeType.VIDEO_MPEG4,
         videoFrameWidth : 640,
         videoFrameHeight : 480,
diff --git a/zh-cn/application-dev/media/video-recorder.md b/zh-cn/application-dev/media/video-recorder.md
index 07b83bdf86217f38bfb47d8fa0850ed8349d4e96..2f6d5b6bbded1c2622fd767db91b807b263f94c4 100644
--- a/zh-cn/application-dev/media/video-recorder.md
+++ b/zh-cn/application-dev/media/video-recorder.md
@@ -76,14 +76,14 @@ export class VideoRecorderDemo {
     let surfaceID = null; // 用于保存getInputSurface返回的surfaceID
     // 获取需要录制的视频的fd地址
     await this.getFd('01.mp4');
-    // 录制相关参数配置
+    // 录制相关参数配置，配置参数以实际硬件设备支持的范围为准
     let videoProfile = {
       audioBitrate : 48000,
       audioChannels : 2,
       audioCodec : 'audio/mp4a-latm',
       audioSampleRate : 48000,
       fileFormat : 'mp4',
-      videoBitrate : 48000,
+      videoBitrate : 2000000,
       videoCodec : 'video/mp4v-es',
       videoFrameWidth : 640,
       videoFrameHeight : 480,
diff --git a/zh-cn/application-dev/reference/apis/js-apis-media.md b/zh-cn/application-dev/reference/apis/js-apis-media.md
index 35538b60d4defdbe0b9de62195ff4740c0581c83..6baad80a656b1034d69bc25f05064b8b2ac36fec 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-media.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-media.md
@@ -1719,13 +1719,14 @@ prepare(config: AVRecorderConfig, callback: AsyncCallback\<void>): void
 **示例：**
 
 ```js
+// 配置参数以实际硬件设备支持的范围为准
 let AVRecorderProfile = {
     audioBitrate : 48000,
     audioChannels : 2,
     audioCodec : media.CodecMimeType.AUDIO_AAC,
     audioSampleRate : 48000,
     fileFormat : media.ContainerFormatType.CFT_MPEG_4,
-    videoBitrate : 48000,
+    videoBitrate : 2000000,
     videoCodec : media.CodecMimeType.VIDEO_MPEG4,
     videoFrameWidth : 640,
     videoFrameHeight : 480,
@@ -1789,13 +1790,14 @@ prepare(config: AVRecorderConfig): Promise\<void>
 **示例：**
 
 ```js
+// 配置参数以实际硬件设备支持的范围为准
 let AVRecorderProfile = {
     audioBitrate : 48000,
     audioChannels : 2,
     audioCodec : media.CodecMimeType.AUDIO_AAC,
     audioSampleRate : 48000,
     fileFormat : media.ContainerFormatType.CFT_MPEG_4,
-    videoBitrate : 48000,
+    videoBitrate : 2000000,
     videoCodec : media.CodecMimeType.VIDEO_MPEG4,
     videoFrameWidth : 640,
     videoFrameHeight : 480,
@@ -2604,13 +2606,14 @@ prepare(config: VideoRecorderConfig, callback: AsyncCallback\<void>): void;
 **示例：**
 
 ```js
+// 配置参数以实际硬件设备支持的范围为准
 let videoProfile = {
     audioBitrate : 48000,
     audioChannels : 2,
     audioCodec : 'audio/mp4a-latm',
     audioSampleRate : 48000,
     fileFormat : 'mp4',
-    videoBitrate : 48000,
+    videoBitrate : 2000000,
     videoCodec : 'video/mp4v-es',
     videoFrameWidth : 640,
     videoFrameHeight : 480,
@@ -2674,13 +2677,14 @@ prepare(config: VideoRecorderConfig): Promise\<void>;
 **示例：**
 
 ```js
+// 配置参数以实际硬件设备支持的范围为准
 let videoProfile = {
     audioBitrate : 48000,
     audioChannels : 2,
     audioCodec : 'audio/mp4a-latm',
     audioSampleRate : 48000,
     fileFormat : 'mp4',
-    videoBitrate : 48000,
+    videoBitrate : 2000000,
     videoCodec : 'video/mp4v-es',
     videoFrameWidth : 640,
     videoFrameHeight : 480,