diff --git a/packages/app/package.json b/packages/app/package.json
index b58d591a..444fc7f5 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -21,6 +21,7 @@
   "dependencies": {
     "@aiui/core": "workspace:*",
     "@tanstack/vue-virtual": "^3.13.19",
+    "hls.js": "^1.6.15",
     "katex": "^0.16.33",
     "leaflet": "^1.9.4",
     "markdown-it": "^14.1.1",
diff --git a/packages/app/src/components/renderers/VideoPlayer.vue b/packages/app/src/components/renderers/VideoPlayer.vue
new file mode 100644
index 00000000..f42a87a3
--- /dev/null
+++ b/packages/app/src/components/renderers/VideoPlayer.vue
@@ -0,0 +1,96 @@
+<template>
+  <div class="video-player rounded-xl bg-white/5 border border-white/10 overflow-hidden">
+    <!-- YouTube embed -->
+    <div v-if="youtubeId" class="relative w-full" style="aspect-ratio: 16/9">
+      <iframe
+        :src="`https://www.youtube-nocookie.com/embed/${youtubeId}`"
+        class="absolute inset-0 w-full h-full"
+        allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+        allowfullscreen
+        title="Video"
+      />
+    </div>
+
+    <!-- Native video -->
+    <div v-else class="relative w-full" style="aspect-ratio: 16/9">
+      <video
+        ref="videoRef"
+        class="absolute inset-0 w-full h-full bg-black"
+        controls
+        playsinline
+        preload="metadata"
+        :poster="poster"
+      >
+        <source v-if="!isHls" :src="url" />
+      </video>
+    </div>
+
+    <!-- Title bar -->
+    <div v-if="title" class="px-3 py-2 border-t border-white/5">
+      <p class="text-xs text-white/60 truncate">{{ title }}</p>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted, onBeforeUnmount, shallowRef, watch } from 'vue'
+
+const props = defineProps<{
+  url: string
+  title?: string
+  poster?: string
+}>()
+
+const videoRef = ref<HTMLVideoElement | null>(null)
+
+// YouTube detection
+const youtubeId = computed(() => {
+  const ytRe = /(?:youtube\.com\/(?:watch\?v=|embed\/)|youtu\.be\/)([a-zA-Z0-9_-]{11})/
+  const m = props.url.match(ytRe)
+  return m ? m[1] : null
+})
+
+// HLS detection
+const isHls = computed(() =>
+  /\.m3u8(\?|$)/i.test(props.url) || /\.hls(\?|$)/i.test(props.url)
+)
+
+type HlsInstance = import('hls.js').default
+const hls = shallowRef<HlsInstance | null>(null)
+
+async function initHls() {
+  if (!isHls.value || !videoRef.value || youtubeId.value) return
+
+  const HlsModule = await import('hls.js')
+  const Hls = HlsModule.default
+
+  if (!Hls.isSupported()) {
+    // Try native HLS support (Safari)
+    if (videoRef.value.canPlayType('application/vnd.apple.mpegurl')) {
+      videoRef.value.src = props.url
+    }
+    return
+  }
+
+  const instance = new Hls()
+  instance.loadSource(props.url)
+  instance.attachMedia(videoRef.value)
+  hls.value = instance
+}
+
+onMounted(() => {
+  if (isHls.value) {
+    initHls()
+  }
+})
+
+watch(() => props.url, () => {
+  hls.value?.destroy()
+  hls.value = null
+  if (isHls.value) initHls()
+})
+
+onBeforeUnmount(() => {
+  hls.value?.destroy()
+})
+</script>
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e1ea7f0e..d908ecb8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -27,6 +27,9 @@ importers:
       '@tanstack/vue-virtual':
         specifier: ^3.13.19
         version: 3.13.19(vue@3.5.29(typescript@5.8.3))
+      hls.js:
+        specifier: ^1.6.15
+        version: 1.6.15
       katex:
         specifier: ^0.16.33
         version: 0.16.33
@@ -2295,6 +2298,9 @@ packages:
     resolution: {integrity: sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==}
     engines: {node: '>= 0.4'}
 
+  hls.js@1.6.15:
+    resolution: {integrity: sha512-E3a5VwgXimGHwpRGV+WxRTKeSp2DW5DI5MWv34ulL3t5UNmyJWCQ1KmLEHbYzcfThfXG8amBL+fCYPneGHC4VA==}
+
   hookable@5.5.3:
     resolution: {integrity: sha512-Yc+BQe8SvoXH1643Qez1zqLRmbA5rCL+sSmk6TVos0LWVfNIB7PGncdlId77WzLGSIB5KaWgTaNTs2lNVEI6VQ==}
 
@@ -5899,6 +5905,8 @@ snapshots:
     dependencies:
       function-bind: 1.1.2
 
+  hls.js@1.6.15: {}
+
   hookable@5.5.3: {}
 
   html-entities@2.6.0: {}