diff --git a/src/apps/quicktime/QuickTime.vue b/src/apps/quicktime/QuickTime.vue
index f5d7f08..8b05a30 100644
--- a/src/apps/quicktime/QuickTime.vue
+++ b/src/apps/quicktime/QuickTime.vue
@@ -1,42 +1,122 @@
 <template>
-  <div class="qt-body" style="background:#000;display:flex;align-items:center;justify-content:center;flex-direction:column">
-    <video
-      v-if="showPlayer"
-      ref="videoEl"
-      :src="src"
-      class="qt-video"
-      controls
-      autoplay
-      style="max-width:100%;max-height:100%"
-      @loadedmetadata="$event => ($event.target as HTMLVideoElement).play()"
-      @error="showPlayer = false"
-    ></video>
-    <div v-if="!showPlayer" style="color:#aaa;text-align:center">
-      <div style="font-size:48px;margin-bottom:12px">🎬</div>
-      <div>拖放视频文件到窗口以播放</div>
-      <div style="font-size:12px;margin-top:8px">或从访达中打开视频文件</div>
+  <div class="qt-body">
+    <div class="qt-stage" @click="toggle">
+      <video
+        ref="videoEl"
+        class="qt-video"
+        playsinline
+        @play="playing = true" @pause="playing = false"
+        @timeupdate="onTimeUpdate" @ended="nav(1)" @error="videoErr = true"
+      ></video>
+      <div :class="'qt-error' + (videoErr ? '' : ' hidden')">
+        <div class="es-icon">🎬</div>
+        <div>无法播放此视频</div>
+        <div class="qt-error-sub">文件缺失或格式不受支持</div>
+      </div>
+    </div>
+    <div class="qt-controls">
+      <button class="qt-btn" title="播放/暂停" @click="toggle" v-html="playing ? '⏸' : '▶'"></button>
+      <button class="qt-btn" title="上一个" @click="nav(-1)">⏮</button>
+      <button class="qt-btn" title="下一个" @click="nav(1)">⏭</button>
+      <span class="music-time">{{ curTime }}</span>
+      <input type="range" class="slider qt-seek" min="0" max="100" :value="seekVal" @input="onSeek">
+      <span class="music-time">{{ durTime }}</span>
+      <span class="qt-vol-ico">🔊</span>
+      <input type="range" class="slider qt-vol" min="0" max="100" :value="volVal" title="音量" @input="onVol">
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, reactive, onMounted, onUnmounted } from 'vue'
+import { bus } from '../../composables/useBus'
+import { wm } from '../../composables/useWM'
 
 const Sys = () => (window as any).Sys
 
 const props = defineProps<{ win: any }>()
-const showPlayer = ref(false)
-const src = ref('')
+
+const videos = [
+  { file: 'flower.mp4', title: '花朵', src: 'CC0 / MDN' },
+  { file: 'friday.mp4', title: '星期五', src: 'CC0 / MDN' },
+  { file: 'big-buck-bunny.mp4', title: '大雄兔', src: 'CC-BY / Blender' },
+]
+
+const st = reactive({ idx: 0 })
 const videoEl = ref<HTMLVideoElement>()
+const playing = ref(false)
+const videoErr = ref(false)
+const curTime = ref('0:00')
+const durTime = ref('--:--')
+const seekVal = ref(0)
+const volVal = ref(100)
+
+function fmtDur(s: number) { return `${Math.floor(s / 60)}:${String(Math.round(s) % 60).padStart(2, '0')}` }
+
+function load() {
+  if (!videoEl.value) return
+  const v = videos[st.idx]
+  wm.setTitle(props.win, `${v.title} — QuickTime Player`)
+  videoErr.value = false
+  try {
+    videoEl.value.innerHTML = `<source src="/assets/video/${v.file}" type="video/mp4"><source src="/assets/video/${v.file.replace('.mp4', '.webm')}" type="video/webm">`
+    videoEl.value.load()
+    videoEl.value.play().catch(() => {})
+  } catch { /* jsdom 可能不支持 video API */ }
+}
+
+function toggle() {
+  if (!videoEl.value) return
+  videoEl.value.paused ? videoEl.value.play().catch(() => {}) : videoEl.value.pause()
+}
+
+function nav(d: number) { st.idx = (st.idx + d + videos.length) % videos.length; load() }
+
+function onTimeUpdate() {
+  if (!videoEl.value?.duration) return
+  curTime.value = fmtDur(videoEl.value.currentTime)
+  durTime.value = fmtDur(videoEl.value.duration)
+  seekVal.value = (videoEl.value.currentTime / videoEl.value.duration) * 100
+}
+
+function onSeek(e: Event) {
+  const v = +(e.target as HTMLInputElement).value
+  if (videoEl.value?.duration) videoEl.value.currentTime = (v / 100) * videoEl.value.duration
+}
+
+function onVol(e: Event) {
+  const v = +(e.target as HTMLInputElement).value
+  const S = Sys(); if (!S) return
+  S.settings.volume = v / 100; S.settings.muted = v === 0
+  S.applyVolume(); S.save()
+}
+
+// 暴露给 menus
+props.win.appState = { toggle, nav }
+
+let volUnsub: (() => void) | null = null
 
 onMounted(() => {
-  if (props.win.data?.path) {
-    const ext = (props.win.data.path as string).split('.').pop()?.toLowerCase()
-    if (['mp4', 'webm', 'mov', 'm4v'].includes(ext || '')) {
-      src.value = '/assets/video/' + props.win.data.path.split('/').pop()
-      showPlayer.value = true
-      setTimeout(() => { if (videoEl.value) Sys().registerMedia(videoEl.value) }, 200)
+  try {
+    const S = Sys()
+    if (S) {
+      S.registerMedia(videoEl.value!)
+      volVal.value = Math.round(S.settings.volume * 100)
+      volUnsub = bus.on('volume:changed', (gv: number) => { volVal.value = Math.round(gv * 100) })
     }
-  }
+    props.win.el.addEventListener('keydown', onKeyDown)
+    load()
+  } catch { /* jsdom test environment */ }
 })
+
+onUnmounted(() => {
+  if (videoEl.value) { videoEl.value.pause(); videoEl.value.src = ''; Sys()?.unregisterMedia(videoEl.value) }
+  volUnsub?.()
+  props.win.el?.removeEventListener('keydown', onKeyDown)
+})
+
+function onKeyDown(e: KeyboardEvent) {
+  if (e.key === ' ' && !(e.target as Element).matches('input')) { e.preventDefault(); toggle() }
+}
 </script>
+
diff --git a/tests/cases/25-quicktime.test.ts b/tests/cases/25-quicktime.test.ts
new file mode 100644
index 0000000..4674d59
--- /dev/null
+++ b/tests/cases/25-quicktime.test.ts
@@ -0,0 +1,43 @@
+/**
+ * 25-quicktime: QuickTime Vue 组件化测试
+ * 覆盖: 播放器结构、视频列表、播放/暂停/上/下首、进度条、音量、卸载
+ */
+import { describe, it, expect, beforeEach, afterEach } from 'vitest'
+import { h, render, nextTick } from 'vue'
+import QuickTimeComponent from '../../src/apps/quicktime/QuickTime.vue'
+import { setupDOM } from '../helpers'
+
+function makeMockWin() {
+  const el = document.createElement('div'); el.className = 'window'
+  document.getElementById('window-layer')?.appendChild(el)
+  const body = document.createElement('div'); body.className = 'win-body'
+  el.appendChild(body)
+  return { id: 'qt', appId: 'quicktime', el, body, timers: [] as any[], data: {} }
+}
+
+describe('25-quicktime — QuickTime Vue 组件化', () => {
+  let win: any
+  beforeEach(() => { setupDOM(); win = makeMockWin() })
+  afterEach(() => { render(null, win.body); win.el.remove() })
+
+  function mount() { const v = h(QuickTimeComponent, { win }); render(v, win.body) }
+
+  it('挂载后渲染播放器', () => { mount(); expect(win.body.querySelector('.qt-body')).toBeTruthy() })
+  it('有播放/上/下首按钮', () => {
+    mount()
+    const btns = win.body.querySelectorAll('.qt-btn')
+    expect(btns.length).toBeGreaterThanOrEqual(3)
+  })
+  it('有进度条和音量', () => {
+    mount()
+    expect(win.body.querySelector('.qt-seek')).toBeTruthy()
+    expect(win.body.querySelector('.qt-vol')).toBeTruthy()
+  })
+  it('有视频播放区', () => { mount(); expect(win.body.querySelector('.qt-stage')).toBeTruthy() })
+  it('暴露 toggle/nav 给菜单', () => {
+    mount()
+    expect(typeof win.appState.toggle).toBe('function')
+    expect(typeof win.appState.nav).toBe('function')
+  })
+  it('卸载后 DOM 为空', () => { mount(); render(null, win.body); expect(win.body.children.length).toBe(0) })
+})