diff --git a/src/router/index.js b/src/router/index.js
index 9ad0015..fc627fd 100644
--- a/src/router/index.js
+++ b/src/router/index.js
@@ -127,7 +127,7 @@ export const constantRoutes = [
   {
     path: '',
     component: Layout,
-    redirect: 'index',
+    redirect: '/inspection-workspace/task',
     hidden: true,
     children: [
       {
@@ -347,12 +347,12 @@ export const dynamicRoutes = [
         meta: { title: '修改生成配置', activeMenu: '/tool/gen' }
       }
     ]
-  },
+  }
 ]
 
 // 防止连续点击多次路由报错
-let routerPush = Router.prototype.push;
-let routerReplace = Router.prototype.replace;
+const routerPush = Router.prototype.push
+const routerReplace = Router.prototype.replace
 // push
 Router.prototype.push = function push(location) {
   return routerPush.call(this, location).catch(err => err)
diff --git a/src/views/video/LivePreview.vue b/src/views/video/LivePreview.vue
index 9968f95..11c2eda 100644
--- a/src/views/video/LivePreview.vue
+++ b/src/views/video/LivePreview.vue
@@ -22,19 +22,18 @@
             ref="cameraCards"
             class="camera-card"
             :class="{ active: activeIndex === index, empty: !slot }"
-            @click="activeIndex = index"
+            @click="selectSlot(index)"
             @dblclick="slot && fullscreen(index)"
           >
             <template v-if="slot">
               <nvr-stream-player
                 :source="slot.streamSource"
                 :loading="slot.loading"
-                :muted="muted"
+                :muted="slot.muted !== false"
                 @error="handleStreamError($event, index)"
               />
               <div class="camera-label">
                 <span><i />{{ slot.name }}</span>
-                <small>CH{{ slot.channel }}</small>
               </div>
               <div class="camera-actions">
                 <button type="button" title="历史回放" @click.stop="openPlayback(slot)"><i class="el-icon-time" /></button>
@@ -138,8 +137,8 @@
           <div class="operation-grid">
             <button type="button" class="wide" @click="capture"><i class="el-icon-camera" />抓图</button>
             <button type="button" @click="showPendingOperation('录像')"><i class="el-icon-video-camera" />录像</button>
-            <button type="button" :class="{ active: !muted }" @click="muted = !muted">
-              <i :class="muted ? 'el-icon-turn-off-microphone' : 'el-icon-microphone'" />静音
+            <button type="button" :class="{ active: !activeMuted }" @click="toggleMuted">
+              <i :class="activeMuted ? 'el-icon-turn-off-microphone' : 'el-icon-microphone'" />静音
             </button>
             <button type="button" @click="showPendingOperation('雨刷器')"><i class="el-icon-umbrella" />雨刷器</button>
             <button type="button" @click="showPendingOperation('3D定位')"><i class="el-icon-aim" />3D定位</button>
@@ -180,13 +179,14 @@ export default {
       ],
       slots: Array.from({ length: 16 }, () => null),
       activeIndex: 0,
+      controlTarget: null,
       placementCursor: 0,
       loading: false,
       connectionText: '读取配置',
       connectionState: '',
-      muted: true,
       ptzSpeed: 4,
       ptzActive: false,
+      ptzCameraCode: '',
       presets: [],
       presetId: null,
       newPresetId: null,
@@ -229,12 +229,14 @@ export default {
   computed: {
     capacity() { return this.layout },
     visibleSlots() { return this.slots.slice(0, this.capacity) },
+    activeSlot() { return this.slots[this.activeIndex] || null },
+    activeMuted() { return this.controlTarget ? this.controlTarget.muted !== false : true },
     gridStyle() {
       const columns = { 1: 1, 4: 2, 9: 3, 16: 4 }[this.layout]
       return { gridTemplateColumns: `repeat(${columns}, minmax(0, 1fr))`, gridTemplateRows: `repeat(${columns}, minmax(0, 1fr))` }
     },
-    selectedChannel() { return this.channels.find(item => item.cameraCode === this.selectedCode) || null },
-    selectedChannelName() { return this.selectedChannel ? (this.selectedChannel.name || `通道 ${this.selectedChannel.channel}`) : '未选择' }
+    selectedChannel() { return this.controlTarget },
+    selectedChannelName() { return this.controlTarget ? (this.controlTarget.name || `通道 ${this.controlTarget.channel}`) : '未选择画面' }
   },
   created() {
     this.$root.$on('video-layout-change', this.changeLayout)
@@ -269,7 +271,6 @@ export default {
         this.channels.push(channel)
       }
       this.selectedCode = channel.cameraCode
-      this.loadPresets(true)
     },
     openChannel(channel) {
       this.selectChannel(channel)
@@ -277,29 +278,39 @@ export default {
     },
     async startChannel(channel) {
       if (!channel || !channel.cameraCode) return
-      const existing = this.slots.findIndex(slot => slot && slot.cameraCode === channel.cameraCode)
-      if (existing >= 0) { this.activeIndex = existing; return }
-      let index = this.visibleSlots.findIndex(slot => !slot)
-      if (index < 0) index = this.placementCursor % this.capacity
+      const index = this.activeIndex
+      const current = this.slots[index]
+      if (current && current.cameraCode === channel.cameraCode) {
+        this.controlTarget = current
+        return
+      }
       if (this.slots[index]) await this.closeSlot(index, false)
       const slot = {
         ...channel,
         loading: true,
         streamSource: { hlsUrl: '', flvUrl: '' },
+        muted: true,
+        errorNotified: false,
         timer: null
       }
       this.$set(this.slots, index, slot)
-      this.activeIndex = index
-      this.placementCursor = (index + 1) % this.capacity
+      this.controlTarget = slot
+      this.selectedCode = channel.cameraCode
+      this.presets = []
+      this.presetId = null
       try {
         const result = await startLive(channel)
+        if (this.slots[index] !== slot) return
         this.applyLiveResult(index, slot, result)
         if (!slot.streamSource.hlsUrl && !slot.streamSource.flvUrl) {
           throw new Error('实时视频接口未返回可播放地址')
         }
+        this.loadPresets(true)
       } catch (error) {
-        this.$set(this.slots, index, null)
-        this.$message.error(error.message)
+        if (this.slots[index] === slot) {
+          this.$set(this.slots, index, null)
+          this.$message.error(error.message)
+        }
       }
     },
     applyLiveResult(index, slot, result) {
@@ -330,8 +341,14 @@ export default {
     async closeSlot(index, notify = true) {
       const slot = this.slots[index]
       if (!slot) return
+      if (index === this.activeIndex && this.ptzActive) this.stopPtz()
       clearTimeout(slot.timer)
       this.$set(this.slots, index, null)
+      if (this.controlTarget === slot) this.controlTarget = null
+      if (index === this.activeIndex) {
+        this.presets = []
+        this.presetId = null
+      }
       try { await stopLive(slot.cameraCode) } catch (_) { /* release the UI slot first */ }
       if (notify) this.$message.success('视频通道已关闭')
     },
@@ -345,13 +362,32 @@ export default {
       }
       this.layout = layout
       this.$root.$emit('video-layout-updated', layout)
-      if (this.activeIndex >= layout) this.activeIndex = 0
+      if (this.activeIndex >= layout) this.selectSlot(0)
       this.placementCursor %= layout
     },
+    selectSlot(index) {
+      if (index === this.activeIndex) {
+        const current = this.slots[index]
+        this.controlTarget = current || null
+        if (current) this.selectedCode = current.cameraCode
+        return
+      }
+      if (this.ptzActive) this.stopPtz()
+      this.activeIndex = index
+      const slot = this.slots[index]
+      this.controlTarget = slot || null
+      this.presets = []
+      this.presetId = null
+      if (!slot) return
+      this.selectedCode = slot.cameraCode
+      this.loadPresets(true)
+    },
     handleStreamError(error, index) {
       const slot = this.slots[index]
-      if (slot) slot.loading = false
-      this.$message.error(error.message)
+      if (!slot || slot.errorNotified) return
+      slot.loading = false
+      slot.errorNotified = true
+      this.$message.error((error && error.message) || '视频播放失败')
     },
     fullscreen(index) {
       const card = this.$refs.cameraCards && this.$refs.cameraCards[index]
@@ -360,31 +396,40 @@ export default {
     openPlayback(slot) {
       this.$router.push({ name: 'VideoHistoryPlayback', query: { cameraCode: slot.cameraCode }})
     },
-    async sendPtz(controlCode, controlPara1 = '', controlPara2 = '') {
-      if (!this.selectedCode) { this.$message.warning('请先选择摄像机'); return }
-      const result = await controlPtz({ cameraCode: this.selectedCode, controlCode, controlPara1, controlPara2 })
+    async sendPtz(controlCode, controlPara1 = '', controlPara2 = '', cameraCode = '') {
+      const targetCode = cameraCode || (this.controlTarget && this.controlTarget.cameraCode)
+      if (!targetCode) { this.$message.warning('请先选择有视频的画面'); return }
+      const result = await controlPtz({ cameraCode: targetCode, controlCode, controlPara1, controlPara2 })
       if (!result || Number(result.resultCode) !== 0) throw new Error('云台控制失败')
     },
     startPtz(action) {
       if (action === 'STOP') {
+        const cameraCode = this.ptzCameraCode || (this.controlTarget && this.controlTarget.cameraCode)
         this.ptzActive = false
-        this.sendPtz(1).catch(error => this.$message.error(error.message))
+        this.ptzCameraCode = ''
+        this.sendPtz(1, '', '', cameraCode).catch(error => this.$message.error(error.message))
         return
       }
       const code = PTZ_CODES[action]
       if (!code || this.ptzActive) return
+      if (!this.controlTarget) { this.$message.warning('请先选择有视频的画面'); return }
       this.ptzActive = true
-      this.sendPtz(code, '2', String(this.ptzSpeed)).catch(error => this.$message.error(error.message))
+      this.ptzCameraCode = this.controlTarget.cameraCode
+      this.sendPtz(code, '2', String(this.ptzSpeed), this.ptzCameraCode).catch(error => this.$message.error(error.message))
     },
     stopPtz() {
       if (!this.ptzActive) return
+      const cameraCode = this.ptzCameraCode
       this.ptzActive = false
-      this.sendPtz(1).catch(error => this.$message.error(error.message))
+      this.ptzCameraCode = ''
+      this.sendPtz(1, '', '', cameraCode).catch(error => this.$message.error(error.message))
     },
     async loadPresets(silent = false) {
-      if (!this.selectedCode) return
+      const cameraCode = this.controlTarget && this.controlTarget.cameraCode
+      if (!cameraCode) return
       try {
-        const result = await getPresetList(this.selectedCode)
+        const result = await getPresetList(cameraCode)
+        if (!this.controlTarget || this.controlTarget.cameraCode !== cameraCode) return
         const source = result && result.ptzPresetInfoList && result.ptzPresetInfoList.ptzPresetInfo
         this.presets = (Array.isArray(source) ? source : []).map(item => ({ id: Number(item.presetIndex), name: item.presetName || `预置位 ${item.presetIndex}` })).filter(item => item.id > 0)
         if (this.presets.length && !this.presets.some(item => item.id === this.presetId)) this.presetId = this.presets[0].id
@@ -425,20 +470,25 @@ export default {
       } catch (error) { if (error !== 'cancel' && error !== 'close') this.$message.error(error.message) }
     },
     async capture() {
-      if (!this.selectedCode) { this.$message.warning('请先选择摄像机'); return }
+      const cameraCode = this.controlTarget && this.controlTarget.cameraCode
+      if (!cameraCode) { this.$message.warning('请先选择有视频的画面'); return }
       try {
-        const command = await createSnapshot(this.selectedCode)
+        const command = await createSnapshot(cameraCode)
         if (!command || Number(command.resultCode) !== 0 || !command.taskID) throw new Error('抓图任务创建失败')
         const blob = await downloadSnapshot(command.taskID)
         const url = URL.createObjectURL(blob)
         const link = document.createElement('a')
         link.href = url
-        link.download = `camera-${this.selectedCode.replace(/[^A-Za-z0-9_-]/g, '_')}-${Date.now()}.jpg`
+        link.download = `camera-${cameraCode.replace(/[^A-Za-z0-9_-]/g, '_')}-${Date.now()}.jpg`
         link.click()
         setTimeout(() => URL.revokeObjectURL(url), 2000)
         this.$message.success('抓图已下载')
       } catch (error) { this.$message.error(error.message) }
     },
+    toggleMuted() {
+      if (!this.controlTarget) { this.$message.warning('请先选择有视频的画面'); return }
+      this.$set(this.controlTarget, 'muted', !(this.controlTarget.muted !== false))
+    },
     showPendingOperation(name) {
       this.$message.info(`${name}控制接口暂未接入`)
     }
diff --git a/src/views/video/components/NvrDeviceTree.vue b/src/views/video/components/NvrDeviceTree.vue
index 85ac5f2..fdd62a2 100644
--- a/src/views/video/components/NvrDeviceTree.vue
+++ b/src/views/video/components/NvrDeviceTree.vue
@@ -38,9 +38,8 @@
           effect="dark"
         >
           <span class="custom-tree-node">
-          <i :class="nodeIcon(data)" />
-          <span class="node-label">{{ data.label || data.name }}</span>
-          <i v-if="data.channelFlag" :class="data.patroldeviceOnlineStatus == 1 ? 'online-dot' : 'offline-dot'" />
+            <i :class="nodeIcon(data)" />
+            <span class="node-label">{{ data.label || data.name }}</span>
           </span>
         </el-tooltip>
       </el-tree>
@@ -57,7 +56,8 @@
 import { getAreaEqubookTreeSelect } from '@/api/videosMonitor/index'
 
 function flatten(nodes, result = []) {
-  ;(nodes || []).forEach(node => {
+  const source = nodes || []
+  source.forEach(node => {
     result.push(node)
     if (Array.isArray(node.children)) flatten(node.children, result)
   })
@@ -136,7 +136,7 @@ export default {
     },
     nodeIcon(node) {
       if (node.channelFlag) return 'el-icon-video-camera'
-      if (node.patroldeviceType == 13) return 'el-icon-position'
+      if (node.patroldeviceType === 13) return 'el-icon-position'
       if (node.areaFlag === 'Yes') return 'el-icon-location-outline'
       return 'el-icon-connection'
     }
@@ -158,8 +158,6 @@ export default {
 .tree-content::-webkit-scrollbar { display: none; }
 .custom-tree-node { display: flex; align-items: center; width: 100%; gap: 6px; font-size: 14px; }
 .node-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-.online-dot, .offline-dot { width: 7px; height: 7px; border-radius: 50%; background: #20d47a; }
-.offline-dot { background: #f05b68; }
 .tree-empty { padding: 40px 0; text-align: center; color: #7298c3; }
 .tree-empty i { display: block; margin-bottom: 10px; font-size: 28px; }
 .tree-tip { padding: 9px 12px; border-top: 1px solid rgba(41,139,255,.3); color: #6f9ecc; font-size: 11px; }