https://liudon.com/en/posts/ Recent content in Posts on 流动 Hugo en Fri, 13 Nov 2026 15:05:09 +0800 https://liudon.com/en/posts/chrome-offscreen-video-black/ Fri, 13 Nov 2026 15:05:09 +0800 https://liudon.com/en/posts/chrome-offscreen-video-black/ <p>In <a href="../../en/posts/safari-offscreen-video-black/">the Safari article</a>, I mentioned a clue that came from Chrome. To explain it, I need to return to Gecko&rsquo;s early tests of recording across macOS Spaces.</p> <p>Back then, switching away from Chrome&rsquo;s Space mainly caused sparse picture updates. After introducing <a href="../../posts/gecko-adaptive-pulse-design/">Pulse</a> (in Chinese), I could capture continuously changing video frames.</p> <p>Later, compatibility testing revealed black video in Safari while offscreen. Remembering that Chrome had worked, I returned to Chrome for comparison—and found that it now turned black too.</p> https://liudon.com/en/posts/safari-offscreen-video-black/ Fri, 13 Nov 2026 15:05:08 +0800 https://liudon.com/en/posts/safari-offscreen-video-black/ <p>During application compatibility testing for <a href="../../posts/gecko-macos-app-recorder/">Gecko</a> (in Chinese), I ran into a Safari problem: recording worked while the window was on the current desktop, but switching to another macOS Space made the video region in the recording turn black. Audio continued, and recording did not stop. Returning to the original Space restored the picture.</p> <p>I had already substantially improved QuickTime&rsquo;s offscreen freezes with <a href="../../posts/gecko-adaptive-pulse-design/">Pulse</a> (in Chinese). This time, Safari&rsquo;s video content disappeared altogether. Adjusting the refresh frequency did not bring it back.</p>