Intro video: replace with 0627.mp4, enable audio#3
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Pull request overview
This PR updates the intro video experience to allow audio playback by removing muted, and adds a user-interaction fallback when autoplay with sound is blocked by browser policy.
Changes:
- Removed
mutedfrom the intro<video>so audio can play. - Added a centered “▶ Play Intro” button that appears when
vv.play()is blocked. - Adjusted autoplay handling logic to show the button instead of immediately skipping the intro.
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| playPromise.catch(function(){ | ||
| // autoplay blocked — show click-to-play button | ||
| if(playBtn) playBtn.style.display="block"; | ||
| if(playBtn) playBtn.addEventListener("click",function(){ | ||
| playBtn.style.display="none"; | ||
| vv.play(); | ||
| }); | ||
| }); |
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变更内容
原因
原视频无声音是因为
<video>标签添加了muted属性——Chrome 要求有音频的视频必须静音才能自动播放。本次修复
frontend/intro.mp4→0627.mp4（11 MB）muted：视频现在可正常输出音频vv.play()）play()Promise rejected），显示居中 ▶ Play Intro 按钮技术说明
Chrome 自动播放策略：
测试
/intro.mp4返回200 video/mp4，Content-Length = 11017941video.muted === false（确认无静音属性）video.ended === true（视频正常播放至结束，触发 startApp() 过渡）#vi遮罩淡出，主界面正常渲染