让网页视频/音频在切换标签页、窗口失焦、页面隐藏或冻结后继续播放，防止自动暂停。
Force video and audio to keep playing in the background. Prevent websites from pausing media during tab switching, window blur, page hiding, or freezing.

https://github.com/chr331/background-video-playback-fix/raw/main/background-video-playback-fix.user.js

https://github.com/chr331/background-video-playback-fix

安装后刷新目标网站即可生效。
After installing, refresh the target website.

在浏览器控制台输入：

window.__backgroundMediaPlaybackKeepalive