From 10a842b4effc747ff666ca964c01bc2970a69080 Mon Sep 17 00:00:00 2001
From: whm <973418690@qq.com>
Date: Thu, 26 Mar 2026 10:22:00 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E5=BC=80=E6=92=AD=E5=8D=A1?=
 =?UTF-8?q?=E6=AD=A3=E5=9C=A8=E8=BF=9E=E6=8E=A5=EF=BC=9A=E7=A7=BB=E9=99=A4?=
 =?UTF-8?q?=E6=9C=AA=E5=AE=9A=E4=B9=89=20quality=EF=BC=9B=E7=94=BB?=
 =?UTF-8?q?=E8=B4=A8=E6=94=B9=E5=AE=98=E7=BD=91=E9=80=89=E6=8B=A9+localSto?=
 =?UTF-8?q?rage?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Made-with: Cursor
---
 admin/src/utils/liveWebRTC.js           | 38 ++++++------
 admin/src/views/sites/LiveBroadcast.vue | 31 +++-------
 web/src/utils/liveQuality.js            |  9 +++
 web/src/views/LiveRoom.vue              | 78 ++++++++++++++++++++++++-
 4 files changed, 111 insertions(+), 45 deletions(-)
 create mode 100644 web/src/utils/liveQuality.js

diff --git a/admin/src/utils/liveWebRTC.js b/admin/src/utils/liveWebRTC.js
index 5074c82..cd99a77 100644
--- a/admin/src/utils/liveWebRTC.js
+++ b/admin/src/utils/liveWebRTC.js
@@ -1,14 +1,10 @@
 /**
  * 管理后台 WebRTC 开播（需登录 token，与 /api/web/live/ws?role=publish&token= 一致）
+ * 画质由官网 /live 写入 localStorage（yh_live_capture_quality），同浏览器开播时生效；默认原画约束最少。
  */
 const apiBase = (import.meta.env.VITE_API_BASE || '').replace(/\/$/, '')
 
-export const LIVE_QUALITY_OPTIONS = [
-  { value: 'source', label: '原画（设备默认）' },
-  { value: 'high', label: '高清 720p' },
-  { value: 'mid', label: '标清 480p' },
-  { value: 'low', label: '流畅 360p' }
-]
+const LIVE_CAPTURE_QUALITY_STORAGE_KEY = 'yh_live_capture_quality'
 
 const QUALITY_MEDIA = {
   source: { video: true, audio: true },
@@ -38,8 +34,16 @@ const QUALITY_MEDIA = {
   }
 }
 
-function liveWsURLPublish(token, quality) {
-  const q = QUALITY_MEDIA[quality] ? quality : 'high'
+function effectivePublishQualityKey() {
+  try {
+    const v = localStorage.getItem(LIVE_CAPTURE_QUALITY_STORAGE_KEY)
+    if (v && QUALITY_MEDIA[v]) return v
+  } catch (_) {}
+  return 'source'
+}
+
+function liveWsURLPublish(token) {
+  const q = effectivePublishQualityKey()
   const path = `/api/web/live/ws?role=publish&token=${encodeURIComponent(token)}&quality=${encodeURIComponent(q)}`
   if (apiBase) {
     const base = apiBase.replace(/\/$/, '')
@@ -52,7 +56,6 @@ function liveWsURLPublish(token, quality) {
 
 const defaultIce = [{ urls: 'stun:stun.l.google.com:19302' }]
 
-/** 将 getUserMedia 异常转为中文说明（含 Edge 英文 “Could not start video source”） */
 function humanizeGetUserMediaError(err) {
   const name = err && err.name
   const raw = ((err && err.message) || '').toLowerCase()
@@ -71,7 +74,7 @@ function humanizeGetUserMediaError(err) {
     return '无法启动摄像头：可能被 Zoom、Teams、腾讯会议、OBS 等占用；或在 Windows「设置 → 隐私和安全性 → 相机」中未允许浏览器/桌面应用访问。请关闭占用软件后刷新页面重试。'
   }
   if (name === 'OverconstrainedError') {
-    return '摄像头不满足当前参数约束，请换用其他摄像头或更新驱动。'
+    return '摄像头不满足当前参数约束：请到官网「直播」页换一档画质（或选原画）后再开播。'
   }
   if (name === 'AbortError') {
     return '打开摄像头被系统中断，请重试。'
@@ -84,25 +87,19 @@ function humanizeGetUserMediaError(err) {
  * @param {string} opts.token 管理员 JWT
  * @param {(s: string) => void} [opts.onStatus]
  * @param {(stream: MediaStream) => void} [opts.onLocalStream]
- * @param {'source'|'high'|'mid'|'low'} [opts.quality] 推流画质（约束摄像头采集分辨率）
  */
 export function startPublishing(opts = {}) {
-  const {
-    token = '',
-    quality = 'high',
-    onStatus = () => {},
-    onLocalStream = () => {}
-  } = opts
+  const { token = '', onStatus = () => {}, onLocalStream = () => {} } = opts
   if (!token) {
     onStatus('未登录，无法开播')
     return { stop: () => {} }
   }
 
-  const wsUrl = liveWsURLPublish(token, quality)
+  const publishKey = effectivePublishQualityKey()
+  const wsUrl = liveWsURLPublish(token)
   const ws = new WebSocket(wsUrl)
   const pc = new RTCPeerConnection({ iceServers: defaultIce })
   let stream = null
-  /** 本地主动 stop / 摄像头失败关闭，避免 onclose 覆盖真实错误提示 */
   let closedByLocal = false
 
   const send = (o) => {
@@ -116,8 +113,7 @@ export function startPublishing(opts = {}) {
   ws.onopen = async () => {
     onStatus('信令已连接，正在采集摄像头…')
     try {
-      // 后台多为 PC：不要用 facingMode:'user'，部分机器会直接导致 “Could not start video source”
-      const cons = QUALITY_MEDIA[quality] || QUALITY_MEDIA.high
+      const cons = QUALITY_MEDIA[publishKey] || QUALITY_MEDIA.source
       stream = await navigator.mediaDevices.getUserMedia(cons)
       onLocalStream(stream)
       stream.getTracks().forEach((t) => pc.addTrack(t, stream))
diff --git a/admin/src/views/sites/LiveBroadcast.vue b/admin/src/views/sites/LiveBroadcast.vue
index 577af39..017f933 100644
--- a/admin/src/views/sites/LiveBroadcast.vue
+++ b/admin/src/views/sites/LiveBroadcast.vue
@@ -10,17 +10,9 @@
         <code>LIVE_PUBLIC_IP</code>（服务器公网 IPv4，与域名一致），并配置 <code>LIVE_ICE_SERVERS</code>（含 TURN）。
       </p>
       <p class="status">{{ status }}</p>
-      <div v-if="!session" class="quality-row">
-        <span class="quality-label">推流画质</span>
-        <el-select v-model="quality" style="width: 220px" :disabled="!token">
-          <el-option
-            v-for="o in qualityOptions"
-            :key="o.value"
-            :label="o.label"
-            :value="o.value"
-          />
-        </el-select>
-      </div>
+      <p class="quality-hint">
+        画质请在官网「直播」页选择（写入本机）；与后台开播使用<strong>同一浏览器</strong>时，开始直播将按该档位采集。
+      </p>
       <div class="actions">
         <el-button v-if="!session" type="primary" :disabled="!token" @click="start">开始直播</el-button>
         <el-button v-else type="danger" @click="stop">结束直播</el-button>
@@ -34,7 +26,7 @@
 import { ref, computed, onMounted, onUnmounted } from 'vue'
 import { onBeforeRouteLeave } from 'vue-router'
 import { useAuthStore } from '../../stores/auth'
-import { startPublishing, LIVE_QUALITY_OPTIONS } from '../../utils/liveWebRTC'
+import { startPublishing } from '../../utils/liveWebRTC'
 
 const authStore = useAuthStore()
 const token = computed(() => authStore.getToken() || '')
@@ -50,7 +42,6 @@ function start() {
   status.value = '正在连接…'
   const { stop } = startPublishing({
     token: token.value,
-    quality: quality.value,
     onStatus: (s) => {
       status.value = s
     },
@@ -108,15 +99,11 @@ onBeforeRouteLeave(() => {
   margin-bottom: 12px;
   min-height: 1.5em;
 }
-.quality-row {
-  display: flex;
-  align-items: center;
-  gap: 12px;
-  margin-bottom: 12px;
-}
-.quality-label {
-  font-size: 14px;
-  color: #606266;
+.quality-hint {
+  font-size: 13px;
+  line-height: 1.6;
+  color: #909399;
+  margin: 0 0 14px;
 }
 .actions {
   margin-bottom: 16px;
diff --git a/web/src/utils/liveQuality.js b/web/src/utils/liveQuality.js
new file mode 100644
index 0000000..96f61fb
--- /dev/null
+++ b/web/src/utils/liveQuality.js
@@ -0,0 +1,9 @@
+/** 与 admin 开播页约定同一 key，用于「官网选画质 → 同机后台开播按此采集」 */
+export const LIVE_CAPTURE_QUALITY_STORAGE_KEY = 'yh_live_capture_quality'
+
+export const LIVE_QUALITY_OPTIONS = [
+  { value: 'source', label: '原画（设备默认，推荐）' },
+  { value: 'high', label: '高清 720p' },
+  { value: 'mid', label: '标清 480p' },
+  { value: 'low', label: '流畅 360p' }
+]
diff --git a/web/src/views/LiveRoom.vue b/web/src/views/LiveRoom.vue
index f28872f..34f1422 100644
--- a/web/src/views/LiveRoom.vue
+++ b/web/src/views/LiveRoom.vue
@@ -9,6 +9,15 @@
 
       <section class="live-block" aria-label="本站直播">
         <h2 class="live-block-title">本站直播（WebRTC）</h2>
+        <div class="live-quality-row">
+          <label class="live-quality-label" for="live-cap-q">采集画质</label>
+          <select id="live-cap-q" v-model="captureQualityPref" class="live-quality-select">
+            <option v-for="o in qualityOptions" :key="o.value" :value="o.value">
+              {{ o.label }}
+            </option>
+          </select>
+        </div>
+        <p v-if="liveInfoLine" class="live-info-quality">{{ liveInfoLine }}</p>
         <p class="live-watch-status">{{ watchStatus }}</p>
         <div class="live-video-wrap">
           <video
@@ -64,14 +73,18 @@
 </template>
 
 <script setup>
-import { ref, computed, onMounted, onUnmounted, nextTick } from 'vue'
+import { ref, computed, watch, onMounted, onUnmounted, nextTick } from 'vue'
 import { apiBase } from '../config'
-import { startViewing, liveDanmakuWsURL } from '../utils/liveWebRTC'
+import { LIVE_QUALITY_OPTIONS, LIVE_CAPTURE_QUALITY_STORAGE_KEY } from '../utils/liveQuality'
+import { startViewing, liveDanmakuWsURL, liveInfoURL } from '../utils/liveWebRTC'
 
 const watchVideoRef = ref(null)
 const rawLiveUrl = ref('')
 const pageTitle = ref('视频直播')
 const watchStatus = ref('正在检测本站直播…')
+const qualityOptions = LIVE_QUALITY_OPTIONS
+const captureQualityPref = ref('source')
+const liveInfoLine = ref('')
 const dmDraft = ref('')
 const dmItems = ref([])
 let dmIdSeq = 0
@@ -80,6 +93,35 @@ let dmWs = null
 const enterUrl = computed(() => (rawLiveUrl.value || '').trim())
 
 let viewSession = null
+let liveInfoTimer = null
+
+function loadCaptureQualityPref() {
+  try {
+    const v = localStorage.getItem(LIVE_CAPTURE_QUALITY_STORAGE_KEY)
+    if (v && qualityOptions.some((o) => o.value === v)) {
+      captureQualityPref.value = v
+      return
+    }
+  } catch (_) {}
+  captureQualityPref.value = 'source'
+}
+
+watch(captureQualityPref, (v) => {
+  try {
+    localStorage.setItem(LIVE_CAPTURE_QUALITY_STORAGE_KEY, v)
+  } catch (_) {}
+})
+
+async function refreshLiveInfoLine() {
+  try {
+    const r = await fetch(liveInfoURL())
+    if (!r.ok) return
+    const j = await r.json()
+    const id = typeof j.current_quality === 'string' && j.current_quality ? j.current_quality : 'source'
+    const label = qualityOptions.find((o) => o.value === id)?.label || id
+    liveInfoLine.value = j.live ? `当前在播 · 采集档位：${label}` : ''
+  } catch (_) {}
+}
 
 function normalizeOutboundUrl(u) {
   const s = (u || '').trim()
@@ -173,9 +215,12 @@ function sendDm() {
 }
 
 onMounted(async () => {
+  loadCaptureQualityPref()
   loadHomepage()
   await nextTick()
   connectDanmaku()
+  refreshLiveInfoLine()
+  liveInfoTimer = window.setInterval(refreshLiveInfoLine, 8000)
   viewSession = startViewing(watchVideoRef.value, {
     muted: false,
     onStatus: (s) => {
@@ -185,6 +230,10 @@ onMounted(async () => {
 })
 
 onUnmounted(() => {
+  if (liveInfoTimer) {
+    clearInterval(liveInfoTimer)
+    liveInfoTimer = null
+  }
   viewSession?.stop()
   try {
     dmWs?.close()
@@ -245,6 +294,31 @@ onUnmounted(() => {
   color: rgba(255, 255, 255, 0.92);
   margin: 0 0 10px;
 }
+.live-quality-row {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 10px;
+  margin-bottom: 8px;
+}
+.live-quality-label {
+  font-size: 13px;
+  color: rgba(255, 255, 255, 0.65);
+}
+.live-quality-select {
+  min-width: 200px;
+  padding: 8px 12px;
+  border-radius: 8px;
+  border: 1px solid rgba(0, 212, 255, 0.35);
+  background: rgba(0, 0, 0, 0.35);
+  color: #fff;
+  font-size: 14px;
+}
+.live-info-quality {
+  font-size: 12px;
+  color: rgba(255, 255, 255, 0.45);
+  margin: 0 0 8px;
+}
 .live-watch-status {
   font-size: 13px;
   color: #00d4ff;