diff --git a/WebRTCControllerWeb/src/components/ControlBar.vue b/WebRTCControllerWeb/src/components/ControlBar.vue
index 0adf0f5..6d2d0fb 100644
--- a/WebRTCControllerWeb/src/components/ControlBar.vue
+++ b/WebRTCControllerWeb/src/components/ControlBar.vue
@@ -1,6 +1,6 @@
 <script setup>
 import { ref, watch } from 'vue';
-import { store, sendKey, sendResolutionChange } from '../store/controllerStore';
+import { store, sendKey, sendResolutionChange, toggleRecording } from '../store/controllerStore';
 
 // Android KeyEvent 键值（与被控端 SystemInputUtils 注入一致）
 const keys = [
@@ -65,6 +65,18 @@ watch(() => store.currentResolution, (res) => {
       <span class="resolution-current" v-if="store.currentResolution">
         当前: {{ store.currentResolution.width }}×{{ store.currentResolution.height }}
       </span>
+
+      <span class="record-sep"></span>
+
+      <button
+        class="record-btn"
+        :class="{ recording: store.recording }"
+        :disabled="!store.rtcConnected"
+        @click="toggleRecording"
+      >
+        {{ store.recording ? '停止录制' : '录制' }}
+      </button>
+      <span class="record-status" v-if="store.recordStatus">{{ store.recordStatus }}</span>
     </div>
 
     <button
@@ -78,3 +90,41 @@ watch(() => store.currentResolution, (res) => {
     </button>
   </div>
 </template>
+
+<style scoped>
+.record-sep {
+  display: inline-block;
+  width: 1px;
+  height: 22px;
+  margin: 0 10px;
+  background: #3a3f4b;
+  vertical-align: middle;
+}
+
+.record-btn {
+  padding: 6px 14px;
+  border: 1px solid #3a3f4b;
+  border-radius: 6px;
+  background: #2b6cff;
+  color: #fff;
+  font-size: 14px;
+  cursor: pointer;
+}
+
+.record-btn:disabled {
+  background: #3a3f4b;
+  color: #888;
+  cursor: not-allowed;
+}
+
+.record-btn.recording {
+  background: #e5484d;
+}
+
+.record-status {
+  margin-left: 8px;
+  font-size: 13px;
+  color: #ffb020;
+  white-space: nowrap;
+}
+</style>
diff --git a/WebRTCControllerWeb/src/services/VideoRecorder.js b/WebRTCControllerWeb/src/services/VideoRecorder.js
new file mode 100644
index 0000000..080cfc3
--- /dev/null
+++ b/WebRTCControllerWeb/src/services/VideoRecorder.js
@@ -0,0 +1,101 @@
+// 基于浏览器原生 MediaRecorder 录制远端 WebRTC 视频流（recvonly 的被控端画面）。
+// 输出封装：Chrome/Firefox 为 WebM(VP8/VP9 + Opus)；Safari 可出 MP4(H.264)。
+// 无需第三方库，也不逐帧抽数据——直接把 MediaStream 交给 MediaRecorder。
+
+function timestamp() {
+  const d = new Date();
+  const p = (n) => String(n).padStart(2, '0');
+  return (
+    `${d.getFullYear()}${p(d.getMonth() + 1)}${p(d.getDate())}` +
+    `_${p(d.getHours())}${p(d.getMinutes())}${p(d.getSeconds())}`
+  );
+}
+
+export class VideoRecorder {
+  constructor() {
+    this.recorder = null;
+    this.chunks = [];
+    this.recording = false;
+    this.startTime = 0;
+  }
+
+  // 浏览器是否支持 MediaRecorder
+  get isSupported() {
+    return typeof MediaRecorder !== 'undefined';
+  }
+
+  // 探测浏览器支持的录制 mimeType（优先 WebM/VP9，回落 WebM/VP8，再回落 MP4）
+  static pickMimeType() {
+    if (typeof MediaRecorder === 'undefined') return null;
+    const candidates = [
+      'video/webm;codecs=vp9,opus',
+      'video/webm;codecs=vp8,opus',
+      'video/webm',
+      'video/mp4',
+    ];
+    if (typeof MediaRecorder.isTypeSupported === 'function') {
+      for (const t of candidates) {
+        if (MediaRecorder.isTypeSupported(t)) return t;
+      }
+    }
+    return '';
+  }
+
+  // 开始录制；stream 为远端 MediaStream（含视频轨）。成功返回 true。
+  start(stream) {
+    if (this.recording || !stream) return false;
+    if (!this.isSupported) throw new Error('当前浏览器不支持 MediaRecorder 录制');
+    const mimeType = VideoRecorder.pickMimeType();
+    try {
+      this.recorder = mimeType
+        ? new MediaRecorder(stream, { mimeType })
+        : new MediaRecorder(stream);
+    } catch (e) {
+      throw new Error('创建 MediaRecorder 失败: ' + (e?.message || e));
+    }
+    this.chunks = [];
+    this.recorder.ondataavailable = (e) => {
+      if (e.data && e.data.size > 0) this.chunks.push(e.data);
+    };
+    // 每秒收集一次分片：即使意外中断也只丢失最近 1 秒，且 final chunk 更完整。
+    this.recorder.start(1000);
+    this.recording = true;
+    this.startTime = Date.now();
+    return true;
+  }
+
+  // 停止录制，返回 { blob, url, ext, filename, mimeType } 或 null。
+  stop() {
+    return new Promise((resolve) => {
+      if (!this.recorder || !this.recording) {
+        resolve(null);
+        return;
+      }
+      this.recorder.onstop = () => {
+        const type = this.recorder.mimeType || 'video/webm';
+        const blob = new Blob(this.chunks, { type });
+        const ext = type.includes('mp4') ? 'mp4' : 'webm';
+        const filename = 'rec_' + timestamp() + '.' + ext;
+        const url = URL.createObjectURL(blob);
+        this.recording = false;
+        this.chunks = [];
+        this.recorder = null;
+        resolve({ blob, url, ext, filename, mimeType: type });
+      };
+      this.recorder.stop();
+    });
+  }
+
+  // 取消并丢弃（如断开连接时调用，不触发下载）。
+  cancel() {
+    if (this.recorder && this.recording) {
+      try {
+        this.recorder.onstop = null;
+        this.recorder.stop();
+      } catch { /* ignore */ }
+    }
+    this.recording = false;
+    this.chunks = [];
+    this.recorder = null;
+  }
+}
diff --git a/WebRTCControllerWeb/src/store/controllerStore.js b/WebRTCControllerWeb/src/store/controllerStore.js
index c087e84..40c3f0b 100644
--- a/WebRTCControllerWeb/src/store/controllerStore.js
+++ b/WebRTCControllerWeb/src/store/controllerStore.js
@@ -1,8 +1,12 @@
 import { reactive, markRaw } from 'vue';
 import { SignalingClient } from '../services/SignalingClient';
 import { WebRtcController } from '../services/WebRtcController';
+import { VideoRecorder } from '../services/VideoRecorder';
 import { loadProto } from '../proto/controlMessage';
 
+// 远程视频录制器（基于浏览器原生 MediaRecorder）。
+const videoRecorder = new VideoRecorder();
+
 // 与 Android/Flutter 端一致的 ICE 配置（请按需替换为自己的 TURN 凭据）。
 export const DEFAULT_ICE_SERVERS = [
   // 公共 TURN（relay 兜底）：UDP + TCP 两种传输，TCP 用于 UDP 被防火墙拦截的网络。
@@ -38,6 +42,10 @@ export const store = reactive({
   remoteStream: null,
   // 被控端上报的当前实际采集分辨率（宽/高/帧率），用于与分辨率下拉框保持一致。
   currentResolution: null,
+
+  // 远程视频录制状态
+  recording: false,
+  recordStatus: '',
 });
 
 let signaling = null;
@@ -134,8 +142,16 @@ export async function connectToDevice(targetId, authType = null, authValue = nul
   store.targetDeviceId = targetId;
   store.error = '';
   store.statusText = '正在发起连接...';
+  // 清空上一次连接的录制提示。
+  store.recording = false;
+  store.recordStatus = '';
 
-  if (webrtc) { await webrtc.close(); webrtc = null; }
+  if (webrtc) {
+    // 切换目标设备会结束当前控制，若正在录制则先自动保存。
+    if (videoRecorder.recording) await stopRecording();
+    await webrtc.close();
+    webrtc = null;
+  }
 
   try {
     webrtc = new WebRtcController({
@@ -166,15 +182,72 @@ export async function connectToDevice(targetId, authType = null, authValue = nul
 }
 
 export async function disconnectDevice() {
+  // 结束控制时若正在录制，先停止并自动保存（触发浏览器下载），再关闭连接。
+  if (videoRecorder.recording) {
+    await stopRecording();
+  }
   if (webrtc) { await webrtc.close(); webrtc = null; }
   store.rtcConnected = false;
   store.dataChannelOpen = false;
   store.remoteStream = null;
   store.stats = null;
   store.currentResolution = null;
+  // 注意：保留 recordStatus 的"已保存：文件名"提示，便于用户确认自动保存结果；
+  // 仅复位 recording 标志，下次连接开始时再清空提示。
+  store.recording = false;
   store.statusText = store.signalingConnected ? '已断开设备连接' : '未连接';
 }
 
+// 切换远程视频录制：开始 / 停止。
+export function toggleRecording() {
+  if (store.recording) return stopRecording();
+  return startRecording();
+}
+
+// 开始录制当前远端视频流。
+export function startRecording() {
+  if (store.recording) return;
+  if (!store.remoteStream) {
+    store.error = '尚未接收到视频画面，无法录制';
+    return;
+  }
+  if (!videoRecorder.isSupported) {
+    store.error = '当前浏览器不支持 MediaRecorder 录制';
+    return;
+  }
+  try {
+    const ok = videoRecorder.start(store.remoteStream);
+    if (ok) {
+      store.recording = true;
+      store.recordStatus = '录制中…';
+    }
+  } catch (e) {
+    store.recordStatus = '';
+    store.error = '开始录制失败: ' + (e?.message || e);
+  }
+}
+
+// 停止录制并触发浏览器下载。
+export async function stopRecording() {
+  const result = await videoRecorder.stop();
+  store.recording = false;
+  if (result) {
+    // 通过 Blob URL 触发浏览器下载（纯前端唯一"保存"途径）。
+    const a = document.createElement('a');
+    a.href = result.url;
+    a.download = result.filename;
+    document.body.appendChild(a);
+    a.click();
+    document.body.removeChild(a);
+    store.recordStatus = '已保存：' + result.filename;
+    // 下载完成后延迟释放 ObjectURL，避免下载被浏览器中断。
+    setTimeout(() => URL.revokeObjectURL(result.url), 30000);
+  } else {
+    store.recordStatus = '录制已停止';
+  }
+  return result;
+}
+
 export function disconnectSignaling() {
   disconnectDevice();
   if (signaling) { signaling.disconnect(); signaling = null; }