diff --git a/frontend/src/components/meeting/VideoTile.vue b/frontend/src/components/meeting/VideoTile.vue
index b2a3ed5..a860e3c 100644
--- a/frontend/src/components/meeting/VideoTile.vue
+++ b/frontend/src/components/meeting/VideoTile.vue
@@ -134,7 +134,12 @@ const applyVideo = (retry = 0) => {
     }
     const el = ensureMediaEl('video')
     if (!el) return
-    el.muted = props.isLocal
+    // 关键：<video> 必须 muted 才能在 Chrome / 微信内核里自动播放。
+    // 音频在独立的 <audio> 元素上播放，所以此处 muted 不会让对方静音，
+    // 同时彻底解决"进会黑屏，必须点切换按钮才出图"的问题。
+    el.muted = true
+    el.setAttribute('muted', '')
+    el.playsInline = true
     if (boundVideoTrack !== props.videoTrack) {
       el.srcObject = new MediaStream([props.videoTrack])
       boundVideoTrack = props.videoTrack