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		<title>Chrome on 流动</title>
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				<title>Mac 跨桌面录屏，为什么 Chrome 视频会黑屏</title>
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				<pubDate>Fri, 13 Nov 2026 15:05:09 +0800</pubDate>
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				<description>&lt;p&gt;在 &lt;a href=&#34;../../posts/safari-offscreen-video-black/&#34;&gt;Safari 篇&lt;/a&gt;里，提到了一条来自 Chrome 的线索。要讲清楚这条线索，还得回到 Gecko 早期的跨桌面录制测试。&lt;/p&gt;&#xA;&lt;p&gt;当时，Chrome 窗口切到其他 Space 后，主要表现是画面更新稀疏。引入 &lt;a href=&#34;../../posts/gecko-adaptive-pulse-design/&#34;&gt;Pulse&lt;/a&gt; 后，已经能够采集到连续变化的视频帧。&lt;/p&gt;</description>
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